Updated the files.

my-app/node_modules/ajv/lib/compile/codegen/code.ts

@@ -0,0 +1,168 @@
+export abstract class _CodeOrName {
+  abstract readonly str: string
+  abstract readonly names: UsedNames
+  abstract toString(): string
+  abstract emptyStr(): boolean
+}
+
+export const IDENTIFIER = /^[a-z$_][a-z$_0-9]*$/i
+
+export class Name extends _CodeOrName {
+  readonly str: string
+  constructor(s: string) {
+    super()
+    if (!IDENTIFIER.test(s)) throw new Error("CodeGen: name must be a valid identifier")
+    this.str = s
+  }
+
+  toString(): string {
+    return this.str
+  }
+
+  emptyStr(): boolean {
+    return false
+  }
+
+  get names(): UsedNames {
+    return {[this.str]: 1}
+  }
+}
+
+export class _Code extends _CodeOrName {
+  readonly _items: readonly CodeItem[]
+  private _str?: string
+  private _names?: UsedNames
+
+  constructor(code: string | readonly CodeItem[]) {
+    super()
+    this._items = typeof code === "string" ? [code] : code
+  }
+
+  toString(): string {
+    return this.str
+  }
+
+  emptyStr(): boolean {
+    if (this._items.length > 1) return false
+    const item = this._items[0]
+    return item === "" || item === '""'
+  }
+
+  get str(): string {
+    return (this._str ??= this._items.reduce((s: string, c: CodeItem) => `${s}${c}`, ""))
+  }
+
+  get names(): UsedNames {
+    return (this._names ??= this._items.reduce((names: UsedNames, c) => {
+      if (c instanceof Name) names[c.str] = (names[c.str] || 0) + 1
+      return names
+    }, {}))
+  }
+}
+
+export type CodeItem = Name | string | number | boolean | null
+
+export type UsedNames = Record<string, number | undefined>
+
+export type Code = _Code | Name
+
+export type SafeExpr = Code | number | boolean | null
+
+export const nil = new _Code("")
+
+type CodeArg = SafeExpr | string | undefined
+
+export function _(strs: TemplateStringsArray, ...args: CodeArg[]): _Code {
+  const code: CodeItem[] = [strs[0]]
+  let i = 0
+  while (i < args.length) {
+    addCodeArg(code, args[i])
+    code.push(strs[++i])
+  }
+  return new _Code(code)
+}
+
+const plus = new _Code("+")
+
+export function str(strs: TemplateStringsArray, ...args: (CodeArg | string[])[]): _Code {
+  const expr: CodeItem[] = [safeStringify(strs[0])]
+  let i = 0
+  while (i < args.length) {
+    expr.push(plus)
+    addCodeArg(expr, args[i])
+    expr.push(plus, safeStringify(strs[++i]))
+  }
+  optimize(expr)
+  return new _Code(expr)
+}
+
+export function addCodeArg(code: CodeItem[], arg: CodeArg | string[]): void {
+  if (arg instanceof _Code) code.push(...arg._items)
+  else if (arg instanceof Name) code.push(arg)
+  else code.push(interpolate(arg))
+}
+
+function optimize(expr: CodeItem[]): void {
+  let i = 1
+  while (i < expr.length - 1) {
+    if (expr[i] === plus) {
+      const res = mergeExprItems(expr[i - 1], expr[i + 1])
+      if (res !== undefined) {
+        expr.splice(i - 1, 3, res)
+        continue
+      }
+      expr[i++] = "+"
+    }
+    i++
+  }
+}
+
+function mergeExprItems(a: CodeItem, b: CodeItem): CodeItem | undefined {
+  if (b === '""') return a
+  if (a === '""') return b
+  if (typeof a == "string") {
+    if (b instanceof Name || a[a.length - 1] !== '"') return
+    if (typeof b != "string") return `${a.slice(0, -1)}${b}"`
+    if (b[0] === '"') return a.slice(0, -1) + b.slice(1)
+    return
+  }
+  if (typeof b == "string" && b[0] === '"' && !(a instanceof Name)) return `"${a}${b.slice(1)}`
+  return
+}
+
+export function strConcat(c1: Code, c2: Code): Code {
+  return c2.emptyStr() ? c1 : c1.emptyStr() ? c2 : str`${c1}${c2}`
+}
+
+// TODO do not allow arrays here
+function interpolate(x?: string | string[] | number | boolean | null): SafeExpr | string {
+  return typeof x == "number" || typeof x == "boolean" || x === null
+    ? x
+    : safeStringify(Array.isArray(x) ? x.join(",") : x)
+}
+
+export function stringify(x: unknown): Code {
+  return new _Code(safeStringify(x))
+}
+
+export function safeStringify(x: unknown): string {
+  return JSON.stringify(x)
+    .replace(/\u2028/g, "\\u2028")
+    .replace(/\u2029/g, "\\u2029")
+}
+
+export function getProperty(key: Code | string | number): Code {
+  return typeof key == "string" && IDENTIFIER.test(key) ? new _Code(`.${key}`) : _`[${key}]`
+}
+
+//Does best effort to format the name properly
+export function getEsmExportName(key: Code | string | number): Code {
+  if (typeof key == "string" && IDENTIFIER.test(key)) {
+    return new _Code(`${key}`)
+  }
+  throw new Error(`CodeGen: invalid export name: ${key}, use explicit $id name mapping`)
+}
+
+export function regexpCode(rx: RegExp): Code {
+  return new _Code(rx.toString())
+}

my-app/node_modules/ajv/lib/compile/codegen/index.ts

@@ -0,0 +1,832 @@
+import type {ScopeValueSets, NameValue, ValueScope, ValueScopeName} from "./scope"
+import {_, nil, _Code, Code, Name, UsedNames, CodeItem, addCodeArg, _CodeOrName} from "./code"
+import {Scope, varKinds} from "./scope"
+
+export {_, str, strConcat, nil, getProperty, stringify, regexpCode, Name, Code} from "./code"
+export {Scope, ScopeStore, ValueScope, ValueScopeName, ScopeValueSets, varKinds} from "./scope"
+
+// type for expressions that can be safely inserted in code without quotes
+export type SafeExpr = Code | number | boolean | null
+
+// type that is either Code of function that adds code to CodeGen instance using its methods
+export type Block = Code | (() => void)
+
+export const operators = {
+  GT: new _Code(">"),
+  GTE: new _Code(">="),
+  LT: new _Code("<"),
+  LTE: new _Code("<="),
+  EQ: new _Code("==="),
+  NEQ: new _Code("!=="),
+  NOT: new _Code("!"),
+  OR: new _Code("||"),
+  AND: new _Code("&&"),
+  ADD: new _Code("+"),
+}
+
+abstract class Node {
+  abstract readonly names: UsedNames
+
+  optimizeNodes(): this | ChildNode | ChildNode[] | undefined {
+    return this
+  }
+
+  optimizeNames(_names: UsedNames, _constants: Constants): this | undefined {
+    return this
+  }
+
+  // get count(): number {
+  //   return 1
+  // }
+}
+
+class Def extends Node {
+  constructor(private readonly varKind: Name, private readonly name: Name, private rhs?: SafeExpr) {
+    super()
+  }
+
+  render({es5, _n}: CGOptions): string {
+    const varKind = es5 ? varKinds.var : this.varKind
+    const rhs = this.rhs === undefined ? "" : ` = ${this.rhs}`
+    return `${varKind} ${this.name}${rhs};` + _n
+  }
+
+  optimizeNames(names: UsedNames, constants: Constants): this | undefined {
+    if (!names[this.name.str]) return
+    if (this.rhs) this.rhs = optimizeExpr(this.rhs, names, constants)
+    return this
+  }
+
+  get names(): UsedNames {
+    return this.rhs instanceof _CodeOrName ? this.rhs.names : {}
+  }
+}
+
+class Assign extends Node {
+  constructor(readonly lhs: Code, public rhs: SafeExpr, private readonly sideEffects?: boolean) {
+    super()
+  }
+
+  render({_n}: CGOptions): string {
+    return `${this.lhs} = ${this.rhs};` + _n
+  }
+
+  optimizeNames(names: UsedNames, constants: Constants): this | undefined {
+    if (this.lhs instanceof Name && !names[this.lhs.str] && !this.sideEffects) return
+    this.rhs = optimizeExpr(this.rhs, names, constants)
+    return this
+  }
+
+  get names(): UsedNames {
+    const names = this.lhs instanceof Name ? {} : {...this.lhs.names}
+    return addExprNames(names, this.rhs)
+  }
+}
+
+class AssignOp extends Assign {
+  constructor(lhs: Code, private readonly op: Code, rhs: SafeExpr, sideEffects?: boolean) {
+    super(lhs, rhs, sideEffects)
+  }
+
+  render({_n}: CGOptions): string {
+    return `${this.lhs} ${this.op}= ${this.rhs};` + _n
+  }
+}
+
+class Label extends Node {
+  readonly names: UsedNames = {}
+  constructor(readonly label: Name) {
+    super()
+  }
+
+  render({_n}: CGOptions): string {
+    return `${this.label}:` + _n
+  }
+}
+
+class Break extends Node {
+  readonly names: UsedNames = {}
+  constructor(readonly label?: Code) {
+    super()
+  }
+
+  render({_n}: CGOptions): string {
+    const label = this.label ? ` ${this.label}` : ""
+    return `break${label};` + _n
+  }
+}
+
+class Throw extends Node {
+  constructor(readonly error: Code) {
+    super()
+  }
+
+  render({_n}: CGOptions): string {
+    return `throw ${this.error};` + _n
+  }
+
+  get names(): UsedNames {
+    return this.error.names
+  }
+}
+
+class AnyCode extends Node {
+  constructor(private code: SafeExpr) {
+    super()
+  }
+
+  render({_n}: CGOptions): string {
+    return `${this.code};` + _n
+  }
+
+  optimizeNodes(): this | undefined {
+    return `${this.code}` ? this : undefined
+  }
+
+  optimizeNames(names: UsedNames, constants: Constants): this {
+    this.code = optimizeExpr(this.code, names, constants)
+    return this
+  }
+
+  get names(): UsedNames {
+    return this.code instanceof _CodeOrName ? this.code.names : {}
+  }
+}
+
+abstract class ParentNode extends Node {
+  constructor(readonly nodes: ChildNode[] = []) {
+    super()
+  }
+
+  render(opts: CGOptions): string {
+    return this.nodes.reduce((code, n) => code + n.render(opts), "")
+  }
+
+  optimizeNodes(): this | ChildNode | ChildNode[] | undefined {
+    const {nodes} = this
+    let i = nodes.length
+    while (i--) {
+      const n = nodes[i].optimizeNodes()
+      if (Array.isArray(n)) nodes.splice(i, 1, ...n)
+      else if (n) nodes[i] = n
+      else nodes.splice(i, 1)
+    }
+    return nodes.length > 0 ? this : undefined
+  }
+
+  optimizeNames(names: UsedNames, constants: Constants): this | undefined {
+    const {nodes} = this
+    let i = nodes.length
+    while (i--) {
+      // iterating backwards improves 1-pass optimization
+      const n = nodes[i]
+      if (n.optimizeNames(names, constants)) continue
+      subtractNames(names, n.names)
+      nodes.splice(i, 1)
+    }
+    return nodes.length > 0 ? this : undefined
+  }
+
+  get names(): UsedNames {
+    return this.nodes.reduce((names: UsedNames, n) => addNames(names, n.names), {})
+  }
+
+  // get count(): number {
+  //   return this.nodes.reduce((c, n) => c + n.count, 1)
+  // }
+}
+
+abstract class BlockNode extends ParentNode {
+  render(opts: CGOptions): string {
+    return "{" + opts._n + super.render(opts) + "}" + opts._n
+  }
+}
+
+class Root extends ParentNode {}
+
+class Else extends BlockNode {
+  static readonly kind = "else"
+}
+
+class If extends BlockNode {
+  static readonly kind = "if"
+  else?: If | Else
+  constructor(private condition: Code | boolean, nodes?: ChildNode[]) {
+    super(nodes)
+  }
+
+  render(opts: CGOptions): string {
+    let code = `if(${this.condition})` + super.render(opts)
+    if (this.else) code += "else " + this.else.render(opts)
+    return code
+  }
+
+  optimizeNodes(): If | ChildNode[] | undefined {
+    super.optimizeNodes()
+    const cond = this.condition
+    if (cond === true) return this.nodes // else is ignored here
+    let e = this.else
+    if (e) {
+      const ns = e.optimizeNodes()
+      e = this.else = Array.isArray(ns) ? new Else(ns) : (ns as Else | undefined)
+    }
+    if (e) {
+      if (cond === false) return e instanceof If ? e : e.nodes
+      if (this.nodes.length) return this
+      return new If(not(cond), e instanceof If ? [e] : e.nodes)
+    }
+    if (cond === false || !this.nodes.length) return undefined
+    return this
+  }
+
+  optimizeNames(names: UsedNames, constants: Constants): this | undefined {
+    this.else = this.else?.optimizeNames(names, constants)
+    if (!(super.optimizeNames(names, constants) || this.else)) return
+    this.condition = optimizeExpr(this.condition, names, constants)
+    return this
+  }
+
+  get names(): UsedNames {
+    const names = super.names
+    addExprNames(names, this.condition)
+    if (this.else) addNames(names, this.else.names)
+    return names
+  }
+
+  // get count(): number {
+  //   return super.count + (this.else?.count || 0)
+  // }
+}
+
+abstract class For extends BlockNode {
+  static readonly kind = "for"
+}
+
+class ForLoop extends For {
+  constructor(private iteration: Code) {
+    super()
+  }
+
+  render(opts: CGOptions): string {
+    return `for(${this.iteration})` + super.render(opts)
+  }
+
+  optimizeNames(names: UsedNames, constants: Constants): this | undefined {
+    if (!super.optimizeNames(names, constants)) return
+    this.iteration = optimizeExpr(this.iteration, names, constants)
+    return this
+  }
+
+  get names(): UsedNames {
+    return addNames(super.names, this.iteration.names)
+  }
+}
+
+class ForRange extends For {
+  constructor(
+    private readonly varKind: Name,
+    private readonly name: Name,
+    private readonly from: SafeExpr,
+    private readonly to: SafeExpr
+  ) {
+    super()
+  }
+
+  render(opts: CGOptions): string {
+    const varKind = opts.es5 ? varKinds.var : this.varKind
+    const {name, from, to} = this
+    return `for(${varKind} ${name}=${from}; ${name}<${to}; ${name}++)` + super.render(opts)
+  }
+
+  get names(): UsedNames {
+    const names = addExprNames(super.names, this.from)
+    return addExprNames(names, this.to)
+  }
+}
+
+class ForIter extends For {
+  constructor(
+    private readonly loop: "of" | "in",
+    private readonly varKind: Name,
+    private readonly name: Name,
+    private iterable: Code
+  ) {
+    super()
+  }
+
+  render(opts: CGOptions): string {
+    return `for(${this.varKind} ${this.name} ${this.loop} ${this.iterable})` + super.render(opts)
+  }
+
+  optimizeNames(names: UsedNames, constants: Constants): this | undefined {
+    if (!super.optimizeNames(names, constants)) return
+    this.iterable = optimizeExpr(this.iterable, names, constants)
+    return this
+  }
+
+  get names(): UsedNames {
+    return addNames(super.names, this.iterable.names)
+  }
+}
+
+class Func extends BlockNode {
+  static readonly kind = "func"
+  constructor(public name: Name, public args: Code, public async?: boolean) {
+    super()
+  }
+
+  render(opts: CGOptions): string {
+    const _async = this.async ? "async " : ""
+    return `${_async}function ${this.name}(${this.args})` + super.render(opts)
+  }
+}
+
+class Return extends ParentNode {
+  static readonly kind = "return"
+
+  render(opts: CGOptions): string {
+    return "return " + super.render(opts)
+  }
+}
+
+class Try extends BlockNode {
+  catch?: Catch
+  finally?: Finally
+
+  render(opts: CGOptions): string {
+    let code = "try" + super.render(opts)
+    if (this.catch) code += this.catch.render(opts)
+    if (this.finally) code += this.finally.render(opts)
+    return code
+  }
+
+  optimizeNodes(): this {
+    super.optimizeNodes()
+    this.catch?.optimizeNodes() as Catch | undefined
+    this.finally?.optimizeNodes() as Finally | undefined
+    return this
+  }
+
+  optimizeNames(names: UsedNames, constants: Constants): this {
+    super.optimizeNames(names, constants)
+    this.catch?.optimizeNames(names, constants)
+    this.finally?.optimizeNames(names, constants)
+    return this
+  }
+
+  get names(): UsedNames {
+    const names = super.names
+    if (this.catch) addNames(names, this.catch.names)
+    if (this.finally) addNames(names, this.finally.names)
+    return names
+  }
+
+  // get count(): number {
+  //   return super.count + (this.catch?.count || 0) + (this.finally?.count || 0)
+  // }
+}
+
+class Catch extends BlockNode {
+  static readonly kind = "catch"
+  constructor(readonly error: Name) {
+    super()
+  }
+
+  render(opts: CGOptions): string {
+    return `catch(${this.error})` + super.render(opts)
+  }
+}
+
+class Finally extends BlockNode {
+  static readonly kind = "finally"
+  render(opts: CGOptions): string {
+    return "finally" + super.render(opts)
+  }
+}
+
+type StartBlockNode = If | For | Func | Return | Try
+
+type LeafNode = Def | Assign | Label | Break | Throw | AnyCode
+
+type ChildNode = StartBlockNode | LeafNode
+
+type EndBlockNodeType =
+  | typeof If
+  | typeof Else
+  | typeof For
+  | typeof Func
+  | typeof Return
+  | typeof Catch
+  | typeof Finally
+
+type Constants = Record<string, SafeExpr | undefined>
+
+export interface CodeGenOptions {
+  es5?: boolean
+  lines?: boolean
+  ownProperties?: boolean
+}
+
+interface CGOptions extends CodeGenOptions {
+  _n: "\n" | ""
+}
+
+export class CodeGen {
+  readonly _scope: Scope
+  readonly _extScope: ValueScope
+  readonly _values: ScopeValueSets = {}
+  private readonly _nodes: ParentNode[]
+  private readonly _blockStarts: number[] = []
+  private readonly _constants: Constants = {}
+  private readonly opts: CGOptions
+
+  constructor(extScope: ValueScope, opts: CodeGenOptions = {}) {
+    this.opts = {...opts, _n: opts.lines ? "\n" : ""}
+    this._extScope = extScope
+    this._scope = new Scope({parent: extScope})
+    this._nodes = [new Root()]
+  }
+
+  toString(): string {
+    return this._root.render(this.opts)
+  }
+
+  // returns unique name in the internal scope
+  name(prefix: string): Name {
+    return this._scope.name(prefix)
+  }
+
+  // reserves unique name in the external scope
+  scopeName(prefix: string): ValueScopeName {
+    return this._extScope.name(prefix)
+  }
+
+  // reserves unique name in the external scope and assigns value to it
+  scopeValue(prefixOrName: ValueScopeName | string, value: NameValue): Name {
+    const name = this._extScope.value(prefixOrName, value)
+    const vs = this._values[name.prefix] || (this._values[name.prefix] = new Set())
+    vs.add(name)
+    return name
+  }
+
+  getScopeValue(prefix: string, keyOrRef: unknown): ValueScopeName | undefined {
+    return this._extScope.getValue(prefix, keyOrRef)
+  }
+
+  // return code that assigns values in the external scope to the names that are used internally
+  // (same names that were returned by gen.scopeName or gen.scopeValue)
+  scopeRefs(scopeName: Name): Code {
+    return this._extScope.scopeRefs(scopeName, this._values)
+  }
+
+  scopeCode(): Code {
+    return this._extScope.scopeCode(this._values)
+  }
+
+  private _def(
+    varKind: Name,
+    nameOrPrefix: Name | string,
+    rhs?: SafeExpr,
+    constant?: boolean
+  ): Name {
+    const name = this._scope.toName(nameOrPrefix)
+    if (rhs !== undefined && constant) this._constants[name.str] = rhs
+    this._leafNode(new Def(varKind, name, rhs))
+    return name
+  }
+
+  // `const` declaration (`var` in es5 mode)
+  const(nameOrPrefix: Name | string, rhs: SafeExpr, _constant?: boolean): Name {
+    return this._def(varKinds.const, nameOrPrefix, rhs, _constant)
+  }
+
+  // `let` declaration with optional assignment (`var` in es5 mode)
+  let(nameOrPrefix: Name | string, rhs?: SafeExpr, _constant?: boolean): Name {
+    return this._def(varKinds.let, nameOrPrefix, rhs, _constant)
+  }
+
+  // `var` declaration with optional assignment
+  var(nameOrPrefix: Name | string, rhs?: SafeExpr, _constant?: boolean): Name {
+    return this._def(varKinds.var, nameOrPrefix, rhs, _constant)
+  }
+
+  // assignment code
+  assign(lhs: Code, rhs: SafeExpr, sideEffects?: boolean): CodeGen {
+    return this._leafNode(new Assign(lhs, rhs, sideEffects))
+  }
+
+  // `+=` code
+  add(lhs: Code, rhs: SafeExpr): CodeGen {
+    return this._leafNode(new AssignOp(lhs, operators.ADD, rhs))
+  }
+
+  // appends passed SafeExpr to code or executes Block
+  code(c: Block | SafeExpr): CodeGen {
+    if (typeof c == "function") c()
+    else if (c !== nil) this._leafNode(new AnyCode(c))
+    return this
+  }
+
+  // returns code for object literal for the passed argument list of key-value pairs
+  object(...keyValues: [Name | string, SafeExpr | string][]): _Code {
+    const code: CodeItem[] = ["{"]
+    for (const [key, value] of keyValues) {
+      if (code.length > 1) code.push(",")
+      code.push(key)
+      if (key !== value || this.opts.es5) {
+        code.push(":")
+        addCodeArg(code, value)
+      }
+    }
+    code.push("}")
+    return new _Code(code)
+  }
+
+  // `if` clause (or statement if `thenBody` and, optionally, `elseBody` are passed)
+  if(condition: Code | boolean, thenBody?: Block, elseBody?: Block): CodeGen {
+    this._blockNode(new If(condition))
+
+    if (thenBody && elseBody) {
+      this.code(thenBody).else().code(elseBody).endIf()
+    } else if (thenBody) {
+      this.code(thenBody).endIf()
+    } else if (elseBody) {
+      throw new Error('CodeGen: "else" body without "then" body')
+    }
+    return this
+  }
+
+  // `else if` clause - invalid without `if` or after `else` clauses
+  elseIf(condition: Code | boolean): CodeGen {
+    return this._elseNode(new If(condition))
+  }
+
+  // `else` clause - only valid after `if` or `else if` clauses
+  else(): CodeGen {
+    return this._elseNode(new Else())
+  }
+
+  // end `if` statement (needed if gen.if was used only with condition)
+  endIf(): CodeGen {
+    return this._endBlockNode(If, Else)
+  }
+
+  private _for(node: For, forBody?: Block): CodeGen {
+    this._blockNode(node)
+    if (forBody) this.code(forBody).endFor()
+    return this
+  }
+
+  // a generic `for` clause (or statement if `forBody` is passed)
+  for(iteration: Code, forBody?: Block): CodeGen {
+    return this._for(new ForLoop(iteration), forBody)
+  }
+
+  // `for` statement for a range of values
+  forRange(
+    nameOrPrefix: Name | string,
+    from: SafeExpr,
+    to: SafeExpr,
+    forBody: (index: Name) => void,
+    varKind: Code = this.opts.es5 ? varKinds.var : varKinds.let
+  ): CodeGen {
+    const name = this._scope.toName(nameOrPrefix)
+    return this._for(new ForRange(varKind, name, from, to), () => forBody(name))
+  }
+
+  // `for-of` statement (in es5 mode replace with a normal for loop)
+  forOf(
+    nameOrPrefix: Name | string,
+    iterable: Code,
+    forBody: (item: Name) => void,
+    varKind: Code = varKinds.const
+  ): CodeGen {
+    const name = this._scope.toName(nameOrPrefix)
+    if (this.opts.es5) {
+      const arr = iterable instanceof Name ? iterable : this.var("_arr", iterable)
+      return this.forRange("_i", 0, _`${arr}.length`, (i) => {
+        this.var(name, _`${arr}[${i}]`)
+        forBody(name)
+      })
+    }
+    return this._for(new ForIter("of", varKind, name, iterable), () => forBody(name))
+  }
+
+  // `for-in` statement.
+  // With option `ownProperties` replaced with a `for-of` loop for object keys
+  forIn(
+    nameOrPrefix: Name | string,
+    obj: Code,
+    forBody: (item: Name) => void,
+    varKind: Code = this.opts.es5 ? varKinds.var : varKinds.const
+  ): CodeGen {
+    if (this.opts.ownProperties) {
+      return this.forOf(nameOrPrefix, _`Object.keys(${obj})`, forBody)
+    }
+    const name = this._scope.toName(nameOrPrefix)
+    return this._for(new ForIter("in", varKind, name, obj), () => forBody(name))
+  }
+
+  // end `for` loop
+  endFor(): CodeGen {
+    return this._endBlockNode(For)
+  }
+
+  // `label` statement
+  label(label: Name): CodeGen {
+    return this._leafNode(new Label(label))
+  }
+
+  // `break` statement
+  break(label?: Code): CodeGen {
+    return this._leafNode(new Break(label))
+  }
+
+  // `return` statement
+  return(value: Block | SafeExpr): CodeGen {
+    const node = new Return()
+    this._blockNode(node)
+    this.code(value)
+    if (node.nodes.length !== 1) throw new Error('CodeGen: "return" should have one node')
+    return this._endBlockNode(Return)
+  }
+
+  // `try` statement
+  try(tryBody: Block, catchCode?: (e: Name) => void, finallyCode?: Block): CodeGen {
+    if (!catchCode && !finallyCode) throw new Error('CodeGen: "try" without "catch" and "finally"')
+    const node = new Try()
+    this._blockNode(node)
+    this.code(tryBody)
+    if (catchCode) {
+      const error = this.name("e")
+      this._currNode = node.catch = new Catch(error)
+      catchCode(error)
+    }
+    if (finallyCode) {
+      this._currNode = node.finally = new Finally()
+      this.code(finallyCode)
+    }
+    return this._endBlockNode(Catch, Finally)
+  }
+
+  // `throw` statement
+  throw(error: Code): CodeGen {
+    return this._leafNode(new Throw(error))
+  }
+
+  // start self-balancing block
+  block(body?: Block, nodeCount?: number): CodeGen {
+    this._blockStarts.push(this._nodes.length)
+    if (body) this.code(body).endBlock(nodeCount)
+    return this
+  }
+
+  // end the current self-balancing block
+  endBlock(nodeCount?: number): CodeGen {
+    const len = this._blockStarts.pop()
+    if (len === undefined) throw new Error("CodeGen: not in self-balancing block")
+    const toClose = this._nodes.length - len
+    if (toClose < 0 || (nodeCount !== undefined && toClose !== nodeCount)) {
+      throw new Error(`CodeGen: wrong number of nodes: ${toClose} vs ${nodeCount} expected`)
+    }
+    this._nodes.length = len
+    return this
+  }
+
+  // `function` heading (or definition if funcBody is passed)
+  func(name: Name, args: Code = nil, async?: boolean, funcBody?: Block): CodeGen {
+    this._blockNode(new Func(name, args, async))
+    if (funcBody) this.code(funcBody).endFunc()
+    return this
+  }
+
+  // end function definition
+  endFunc(): CodeGen {
+    return this._endBlockNode(Func)
+  }
+
+  optimize(n = 1): void {
+    while (n-- > 0) {
+      this._root.optimizeNodes()
+      this._root.optimizeNames(this._root.names, this._constants)
+    }
+  }
+
+  private _leafNode(node: LeafNode): CodeGen {
+    this._currNode.nodes.push(node)
+    return this
+  }
+
+  private _blockNode(node: StartBlockNode): void {
+    this._currNode.nodes.push(node)
+    this._nodes.push(node)
+  }
+
+  private _endBlockNode(N1: EndBlockNodeType, N2?: EndBlockNodeType): CodeGen {
+    const n = this._currNode
+    if (n instanceof N1 || (N2 && n instanceof N2)) {
+      this._nodes.pop()
+      return this
+    }
+    throw new Error(`CodeGen: not in block "${N2 ? `${N1.kind}/${N2.kind}` : N1.kind}"`)
+  }
+
+  private _elseNode(node: If | Else): CodeGen {
+    const n = this._currNode
+    if (!(n instanceof If)) {
+      throw new Error('CodeGen: "else" without "if"')
+    }
+    this._currNode = n.else = node
+    return this
+  }
+
+  private get _root(): Root {
+    return this._nodes[0] as Root
+  }
+
+  private get _currNode(): ParentNode {
+    const ns = this._nodes
+    return ns[ns.length - 1]
+  }
+
+  private set _currNode(node: ParentNode) {
+    const ns = this._nodes
+    ns[ns.length - 1] = node
+  }
+
+  // get nodeCount(): number {
+  //   return this._root.count
+  // }
+}
+
+function addNames(names: UsedNames, from: UsedNames): UsedNames {
+  for (const n in from) names[n] = (names[n] || 0) + (from[n] || 0)
+  return names
+}
+
+function addExprNames(names: UsedNames, from: SafeExpr): UsedNames {
+  return from instanceof _CodeOrName ? addNames(names, from.names) : names
+}
+
+function optimizeExpr<T extends SafeExpr | Code>(expr: T, names: UsedNames, constants: Constants): T
+function optimizeExpr(expr: SafeExpr, names: UsedNames, constants: Constants): SafeExpr {
+  if (expr instanceof Name) return replaceName(expr)
+  if (!canOptimize(expr)) return expr
+  return new _Code(
+    expr._items.reduce((items: CodeItem[], c: SafeExpr | string) => {
+      if (c instanceof Name) c = replaceName(c)
+      if (c instanceof _Code) items.push(...c._items)
+      else items.push(c)
+      return items
+    }, [])
+  )
+
+  function replaceName(n: Name): SafeExpr {
+    const c = constants[n.str]
+    if (c === undefined || names[n.str] !== 1) return n
+    delete names[n.str]
+    return c
+  }
+
+  function canOptimize(e: SafeExpr): e is _Code {
+    return (
+      e instanceof _Code &&
+      e._items.some(
+        (c) => c instanceof Name && names[c.str] === 1 && constants[c.str] !== undefined
+      )
+    )
+  }
+}
+
+function subtractNames(names: UsedNames, from: UsedNames): void {
+  for (const n in from) names[n] = (names[n] || 0) - (from[n] || 0)
+}
+
+export function not<T extends Code | SafeExpr>(x: T): T
+export function not(x: Code | SafeExpr): Code | SafeExpr {
+  return typeof x == "boolean" || typeof x == "number" || x === null ? !x : _`!${par(x)}`
+}
+
+const andCode = mappend(operators.AND)
+
+// boolean AND (&&) expression with the passed arguments
+export function and(...args: Code[]): Code {
+  return args.reduce(andCode)
+}
+
+const orCode = mappend(operators.OR)
+
+// boolean OR (||) expression with the passed arguments
+export function or(...args: Code[]): Code {
+  return args.reduce(orCode)
+}
+
+type MAppend = (x: Code, y: Code) => Code
+
+function mappend(op: Code): MAppend {
+  return (x, y) => (x === nil ? y : y === nil ? x : _`${par(x)} ${op} ${par(y)}`)
+}
+
+function par(x: Code): Code {
+  return x instanceof Name ? x : _`(${x})`
+}

my-app/node_modules/ajv/lib/compile/codegen/scope.ts

@@ -0,0 +1,215 @@
+import {_, nil, Code, Name} from "./code"
+
+interface NameGroup {
+  prefix: string
+  index: number
+}
+
+export interface NameValue {
+  ref: ValueReference // this is the reference to any value that can be referred to from generated code via `globals` var in the closure
+  key?: unknown // any key to identify a global to avoid duplicates, if not passed ref is used
+  code?: Code // this is the code creating the value needed for standalone code wit_out closure - can be a primitive value, function or import (`require`)
+}
+
+export type ValueReference = unknown // possibly make CodeGen parameterized type on this type
+
+class ValueError extends Error {
+  readonly value?: NameValue
+  constructor(name: ValueScopeName) {
+    super(`CodeGen: "code" for ${name} not defined`)
+    this.value = name.value
+  }
+}
+
+interface ScopeOptions {
+  prefixes?: Set<string>
+  parent?: Scope
+}
+
+interface ValueScopeOptions extends ScopeOptions {
+  scope: ScopeStore
+  es5?: boolean
+  lines?: boolean
+}
+
+export type ScopeStore = Record<string, ValueReference[] | undefined>
+
+type ScopeValues = {
+  [Prefix in string]?: Map<unknown, ValueScopeName>
+}
+
+export type ScopeValueSets = {
+  [Prefix in string]?: Set<ValueScopeName>
+}
+
+export enum UsedValueState {
+  Started,
+  Completed,
+}
+
+export type UsedScopeValues = {
+  [Prefix in string]?: Map<ValueScopeName, UsedValueState | undefined>
+}
+
+export const varKinds = {
+  const: new Name("const"),
+  let: new Name("let"),
+  var: new Name("var"),
+}
+
+export class Scope {
+  protected readonly _names: {[Prefix in string]?: NameGroup} = {}
+  protected readonly _prefixes?: Set<string>
+  protected readonly _parent?: Scope
+
+  constructor({prefixes, parent}: ScopeOptions = {}) {
+    this._prefixes = prefixes
+    this._parent = parent
+  }
+
+  toName(nameOrPrefix: Name | string): Name {
+    return nameOrPrefix instanceof Name ? nameOrPrefix : this.name(nameOrPrefix)
+  }
+
+  name(prefix: string): Name {
+    return new Name(this._newName(prefix))
+  }
+
+  protected _newName(prefix: string): string {
+    const ng = this._names[prefix] || this._nameGroup(prefix)
+    return `${prefix}${ng.index++}`
+  }
+
+  private _nameGroup(prefix: string): NameGroup {
+    if (this._parent?._prefixes?.has(prefix) || (this._prefixes && !this._prefixes.has(prefix))) {
+      throw new Error(`CodeGen: prefix "${prefix}" is not allowed in this scope`)
+    }
+    return (this._names[prefix] = {prefix, index: 0})
+  }
+}
+
+interface ScopePath {
+  property: string
+  itemIndex: number
+}
+
+export class ValueScopeName extends Name {
+  readonly prefix: string
+  value?: NameValue
+  scopePath?: Code
+
+  constructor(prefix: string, nameStr: string) {
+    super(nameStr)
+    this.prefix = prefix
+  }
+
+  setValue(value: NameValue, {property, itemIndex}: ScopePath): void {
+    this.value = value
+    this.scopePath = _`.${new Name(property)}[${itemIndex}]`
+  }
+}
+
+interface VSOptions extends ValueScopeOptions {
+  _n: Code
+}
+
+const line = _`\n`
+
+export class ValueScope extends Scope {
+  protected readonly _values: ScopeValues = {}
+  protected readonly _scope: ScopeStore
+  readonly opts: VSOptions
+
+  constructor(opts: ValueScopeOptions) {
+    super(opts)
+    this._scope = opts.scope
+    this.opts = {...opts, _n: opts.lines ? line : nil}
+  }
+
+  get(): ScopeStore {
+    return this._scope
+  }
+
+  name(prefix: string): ValueScopeName {
+    return new ValueScopeName(prefix, this._newName(prefix))
+  }
+
+  value(nameOrPrefix: ValueScopeName | string, value: NameValue): ValueScopeName {
+    if (value.ref === undefined) throw new Error("CodeGen: ref must be passed in value")
+    const name = this.toName(nameOrPrefix) as ValueScopeName
+    const {prefix} = name
+    const valueKey = value.key ?? value.ref
+    let vs = this._values[prefix]
+    if (vs) {
+      const _name = vs.get(valueKey)
+      if (_name) return _name
+    } else {
+      vs = this._values[prefix] = new Map()
+    }
+    vs.set(valueKey, name)
+
+    const s = this._scope[prefix] || (this._scope[prefix] = [])
+    const itemIndex = s.length
+    s[itemIndex] = value.ref
+    name.setValue(value, {property: prefix, itemIndex})
+    return name
+  }
+
+  getValue(prefix: string, keyOrRef: unknown): ValueScopeName | undefined {
+    const vs = this._values[prefix]
+    if (!vs) return
+    return vs.get(keyOrRef)
+  }
+
+  scopeRefs(scopeName: Name, values: ScopeValues | ScopeValueSets = this._values): Code {
+    return this._reduceValues(values, (name: ValueScopeName) => {
+      if (name.scopePath === undefined) throw new Error(`CodeGen: name "${name}" has no value`)
+      return _`${scopeName}${name.scopePath}`
+    })
+  }
+
+  scopeCode(
+    values: ScopeValues | ScopeValueSets = this._values,
+    usedValues?: UsedScopeValues,
+    getCode?: (n: ValueScopeName) => Code | undefined
+  ): Code {
+    return this._reduceValues(
+      values,
+      (name: ValueScopeName) => {
+        if (name.value === undefined) throw new Error(`CodeGen: name "${name}" has no value`)
+        return name.value.code
+      },
+      usedValues,
+      getCode
+    )
+  }
+
+  private _reduceValues(
+    values: ScopeValues | ScopeValueSets,
+    valueCode: (n: ValueScopeName) => Code | undefined,
+    usedValues: UsedScopeValues = {},
+    getCode?: (n: ValueScopeName) => Code | undefined
+  ): Code {
+    let code: Code = nil
+    for (const prefix in values) {
+      const vs = values[prefix]
+      if (!vs) continue
+      const nameSet = (usedValues[prefix] = usedValues[prefix] || new Map())
+      vs.forEach((name: ValueScopeName) => {
+        if (nameSet.has(name)) return
+        nameSet.set(name, UsedValueState.Started)
+        let c = valueCode(name)
+        if (c) {
+          const def = this.opts.es5 ? varKinds.var : varKinds.const
+          code = _`${code}${def} ${name} = ${c};${this.opts._n}`
+        } else if ((c = getCode?.(name))) {
+          code = _`${code}${c}${this.opts._n}`
+        } else {
+          throw new ValueError(name)
+        }
+        nameSet.set(name, UsedValueState.Completed)
+      })
+    }
+    return code
+  }
+}

my-app/node_modules/ajv/lib/compile/errors.ts

@@ -0,0 +1,184 @@
+import type {KeywordErrorCxt, KeywordErrorDefinition} from "../types"
+import type {SchemaCxt} from "./index"
+import {CodeGen, _, str, strConcat, Code, Name} from "./codegen"
+import {SafeExpr} from "./codegen/code"
+import {getErrorPath, Type} from "./util"
+import N from "./names"
+
+export const keywordError: KeywordErrorDefinition = {
+  message: ({keyword}) => str`must pass "${keyword}" keyword validation`,
+}
+
+export const keyword$DataError: KeywordErrorDefinition = {
+  message: ({keyword, schemaType}) =>
+    schemaType
+      ? str`"${keyword}" keyword must be ${schemaType} ($data)`
+      : str`"${keyword}" keyword is invalid ($data)`,
+}
+
+export interface ErrorPaths {
+  instancePath?: Code
+  schemaPath?: string
+  parentSchema?: boolean
+}
+
+export function reportError(
+  cxt: KeywordErrorCxt,
+  error: KeywordErrorDefinition = keywordError,
+  errorPaths?: ErrorPaths,
+  overrideAllErrors?: boolean
+): void {
+  const {it} = cxt
+  const {gen, compositeRule, allErrors} = it
+  const errObj = errorObjectCode(cxt, error, errorPaths)
+  if (overrideAllErrors ?? (compositeRule || allErrors)) {
+    addError(gen, errObj)
+  } else {
+    returnErrors(it, _`[${errObj}]`)
+  }
+}
+
+export function reportExtraError(
+  cxt: KeywordErrorCxt,
+  error: KeywordErrorDefinition = keywordError,
+  errorPaths?: ErrorPaths
+): void {
+  const {it} = cxt
+  const {gen, compositeRule, allErrors} = it
+  const errObj = errorObjectCode(cxt, error, errorPaths)
+  addError(gen, errObj)
+  if (!(compositeRule || allErrors)) {
+    returnErrors(it, N.vErrors)
+  }
+}
+
+export function resetErrorsCount(gen: CodeGen, errsCount: Name): void {
+  gen.assign(N.errors, errsCount)
+  gen.if(_`${N.vErrors} !== null`, () =>
+    gen.if(
+      errsCount,
+      () => gen.assign(_`${N.vErrors}.length`, errsCount),
+      () => gen.assign(N.vErrors, null)
+    )
+  )
+}
+
+export function extendErrors({
+  gen,
+  keyword,
+  schemaValue,
+  data,
+  errsCount,
+  it,
+}: KeywordErrorCxt): void {
+  /* istanbul ignore if */
+  if (errsCount === undefined) throw new Error("ajv implementation error")
+  const err = gen.name("err")
+  gen.forRange("i", errsCount, N.errors, (i) => {
+    gen.const(err, _`${N.vErrors}[${i}]`)
+    gen.if(_`${err}.instancePath === undefined`, () =>
+      gen.assign(_`${err}.instancePath`, strConcat(N.instancePath, it.errorPath))
+    )
+    gen.assign(_`${err}.schemaPath`, str`${it.errSchemaPath}/${keyword}`)
+    if (it.opts.verbose) {
+      gen.assign(_`${err}.schema`, schemaValue)
+      gen.assign(_`${err}.data`, data)
+    }
+  })
+}
+
+function addError(gen: CodeGen, errObj: Code): void {
+  const err = gen.const("err", errObj)
+  gen.if(
+    _`${N.vErrors} === null`,
+    () => gen.assign(N.vErrors, _`[${err}]`),
+    _`${N.vErrors}.push(${err})`
+  )
+  gen.code(_`${N.errors}++`)
+}
+
+function returnErrors(it: SchemaCxt, errs: Code): void {
+  const {gen, validateName, schemaEnv} = it
+  if (schemaEnv.$async) {
+    gen.throw(_`new ${it.ValidationError as Name}(${errs})`)
+  } else {
+    gen.assign(_`${validateName}.errors`, errs)
+    gen.return(false)
+  }
+}
+
+const E = {
+  keyword: new Name("keyword"),
+  schemaPath: new Name("schemaPath"), // also used in JTD errors
+  params: new Name("params"),
+  propertyName: new Name("propertyName"),
+  message: new Name("message"),
+  schema: new Name("schema"),
+  parentSchema: new Name("parentSchema"),
+}
+
+function errorObjectCode(
+  cxt: KeywordErrorCxt,
+  error: KeywordErrorDefinition,
+  errorPaths?: ErrorPaths
+): Code {
+  const {createErrors} = cxt.it
+  if (createErrors === false) return _`{}`
+  return errorObject(cxt, error, errorPaths)
+}
+
+function errorObject(
+  cxt: KeywordErrorCxt,
+  error: KeywordErrorDefinition,
+  errorPaths: ErrorPaths = {}
+): Code {
+  const {gen, it} = cxt
+  const keyValues: [Name, SafeExpr | string][] = [
+    errorInstancePath(it, errorPaths),
+    errorSchemaPath(cxt, errorPaths),
+  ]
+  extraErrorProps(cxt, error, keyValues)
+  return gen.object(...keyValues)
+}
+
+function errorInstancePath({errorPath}: SchemaCxt, {instancePath}: ErrorPaths): [Name, Code] {
+  const instPath = instancePath
+    ? str`${errorPath}${getErrorPath(instancePath, Type.Str)}`
+    : errorPath
+  return [N.instancePath, strConcat(N.instancePath, instPath)]
+}
+
+function errorSchemaPath(
+  {keyword, it: {errSchemaPath}}: KeywordErrorCxt,
+  {schemaPath, parentSchema}: ErrorPaths
+): [Name, string | Code] {
+  let schPath = parentSchema ? errSchemaPath : str`${errSchemaPath}/${keyword}`
+  if (schemaPath) {
+    schPath = str`${schPath}${getErrorPath(schemaPath, Type.Str)}`
+  }
+  return [E.schemaPath, schPath]
+}
+
+function extraErrorProps(
+  cxt: KeywordErrorCxt,
+  {params, message}: KeywordErrorDefinition,
+  keyValues: [Name, SafeExpr | string][]
+): void {
+  const {keyword, data, schemaValue, it} = cxt
+  const {opts, propertyName, topSchemaRef, schemaPath} = it
+  keyValues.push(
+    [E.keyword, keyword],
+    [E.params, typeof params == "function" ? params(cxt) : params || _`{}`]
+  )
+  if (opts.messages) {
+    keyValues.push([E.message, typeof message == "function" ? message(cxt) : message])
+  }
+  if (opts.verbose) {
+    keyValues.push(
+      [E.schema, schemaValue],
+      [E.parentSchema, _`${topSchemaRef}${schemaPath}`],
+      [N.data, data]
+    )
+  }
+  if (propertyName) keyValues.push([E.propertyName, propertyName])
+}

my-app/node_modules/ajv/lib/compile/index.ts

@@ -0,0 +1,324 @@
+import type {
+  AnySchema,
+  AnySchemaObject,
+  AnyValidateFunction,
+  AsyncValidateFunction,
+  EvaluatedProperties,
+  EvaluatedItems,
+} from "../types"
+import type Ajv from "../core"
+import type {InstanceOptions} from "../core"
+import {CodeGen, _, nil, stringify, Name, Code, ValueScopeName} from "./codegen"
+import ValidationError from "../runtime/validation_error"
+import N from "./names"
+import {LocalRefs, getFullPath, _getFullPath, inlineRef, normalizeId, resolveUrl} from "./resolve"
+import {schemaHasRulesButRef, unescapeFragment} from "./util"
+import {validateFunctionCode} from "./validate"
+import * as URI from "uri-js"
+import {JSONType} from "./rules"
+
+export type SchemaRefs = {
+  [Ref in string]?: SchemaEnv | AnySchema
+}
+
+export interface SchemaCxt {
+  readonly gen: CodeGen
+  readonly allErrors?: boolean // validation mode - whether to collect all errors or break on error
+  readonly data: Name // Name with reference to the current part of data instance
+  readonly parentData: Name // should be used in keywords modifying data
+  readonly parentDataProperty: Code | number // should be used in keywords modifying data
+  readonly dataNames: Name[]
+  readonly dataPathArr: (Code | number)[]
+  readonly dataLevel: number // the level of the currently validated data,
+  // it can be used to access both the property names and the data on all levels from the top.
+  dataTypes: JSONType[] // data types applied to the current part of data instance
+  definedProperties: Set<string> // set of properties to keep track of for required checks
+  readonly topSchemaRef: Code
+  readonly validateName: Name
+  evaluated?: Name
+  readonly ValidationError?: Name
+  readonly schema: AnySchema // current schema object - equal to parentSchema passed via KeywordCxt
+  readonly schemaEnv: SchemaEnv
+  readonly rootId: string
+  baseId: string // the current schema base URI that should be used as the base for resolving URIs in references (\$ref)
+  readonly schemaPath: Code // the run-time expression that evaluates to the property name of the current schema
+  readonly errSchemaPath: string // this is actual string, should not be changed to Code
+  readonly errorPath: Code
+  readonly propertyName?: Name
+  readonly compositeRule?: boolean // true indicates that the current schema is inside the compound keyword,
+  // where failing some rule doesn't mean validation failure (`anyOf`, `oneOf`, `not`, `if`).
+  // This flag is used to determine whether you can return validation result immediately after any error in case the option `allErrors` is not `true.
+  // You only need to use it if you have many steps in your keywords and potentially can define multiple errors.
+  props?: EvaluatedProperties | Name // properties evaluated by this schema - used by parent schema or assigned to validation function
+  items?: EvaluatedItems | Name // last item evaluated by this schema - used by parent schema or assigned to validation function
+  jtdDiscriminator?: string
+  jtdMetadata?: boolean
+  readonly createErrors?: boolean
+  readonly opts: InstanceOptions // Ajv instance option.
+  readonly self: Ajv // current Ajv instance
+}
+
+export interface SchemaObjCxt extends SchemaCxt {
+  readonly schema: AnySchemaObject
+}
+interface SchemaEnvArgs {
+  readonly schema: AnySchema
+  readonly schemaId?: "$id" | "id"
+  readonly root?: SchemaEnv
+  readonly baseId?: string
+  readonly schemaPath?: string
+  readonly localRefs?: LocalRefs
+  readonly meta?: boolean
+}
+
+export class SchemaEnv implements SchemaEnvArgs {
+  readonly schema: AnySchema
+  readonly schemaId?: "$id" | "id"
+  readonly root: SchemaEnv
+  baseId: string // TODO possibly, it should be readonly
+  schemaPath?: string
+  localRefs?: LocalRefs
+  readonly meta?: boolean
+  readonly $async?: boolean // true if the current schema is asynchronous.
+  readonly refs: SchemaRefs = {}
+  readonly dynamicAnchors: {[Ref in string]?: true} = {}
+  validate?: AnyValidateFunction
+  validateName?: ValueScopeName
+  serialize?: (data: unknown) => string
+  serializeName?: ValueScopeName
+  parse?: (data: string) => unknown
+  parseName?: ValueScopeName
+
+  constructor(env: SchemaEnvArgs) {
+    let schema: AnySchemaObject | undefined
+    if (typeof env.schema == "object") schema = env.schema
+    this.schema = env.schema
+    this.schemaId = env.schemaId
+    this.root = env.root || this
+    this.baseId = env.baseId ?? normalizeId(schema?.[env.schemaId || "$id"])
+    this.schemaPath = env.schemaPath
+    this.localRefs = env.localRefs
+    this.meta = env.meta
+    this.$async = schema?.$async
+    this.refs = {}
+  }
+}
+
+// let codeSize = 0
+// let nodeCount = 0
+
+// Compiles schema in SchemaEnv
+export function compileSchema(this: Ajv, sch: SchemaEnv): SchemaEnv {
+  // TODO refactor - remove compilations
+  const _sch = getCompilingSchema.call(this, sch)
+  if (_sch) return _sch
+  const rootId = getFullPath(this.opts.uriResolver, sch.root.baseId) // TODO if getFullPath removed 1 tests fails
+  const {es5, lines} = this.opts.code
+  const {ownProperties} = this.opts
+  const gen = new CodeGen(this.scope, {es5, lines, ownProperties})
+  let _ValidationError
+  if (sch.$async) {
+    _ValidationError = gen.scopeValue("Error", {
+      ref: ValidationError,
+      code: _`require("ajv/dist/runtime/validation_error").default`,
+    })
+  }
+
+  const validateName = gen.scopeName("validate")
+  sch.validateName = validateName
+
+  const schemaCxt: SchemaCxt = {
+    gen,
+    allErrors: this.opts.allErrors,
+    data: N.data,
+    parentData: N.parentData,
+    parentDataProperty: N.parentDataProperty,
+    dataNames: [N.data],
+    dataPathArr: [nil], // TODO can its length be used as dataLevel if nil is removed?
+    dataLevel: 0,
+    dataTypes: [],
+    definedProperties: new Set<string>(),
+    topSchemaRef: gen.scopeValue(
+      "schema",
+      this.opts.code.source === true
+        ? {ref: sch.schema, code: stringify(sch.schema)}
+        : {ref: sch.schema}
+    ),
+    validateName,
+    ValidationError: _ValidationError,
+    schema: sch.schema,
+    schemaEnv: sch,
+    rootId,
+    baseId: sch.baseId || rootId,
+    schemaPath: nil,
+    errSchemaPath: sch.schemaPath || (this.opts.jtd ? "" : "#"),
+    errorPath: _`""`,
+    opts: this.opts,
+    self: this,
+  }
+
+  let sourceCode: string | undefined
+  try {
+    this._compilations.add(sch)
+    validateFunctionCode(schemaCxt)
+    gen.optimize(this.opts.code.optimize)
+    // gen.optimize(1)
+    const validateCode = gen.toString()
+    sourceCode = `${gen.scopeRefs(N.scope)}return ${validateCode}`
+    // console.log((codeSize += sourceCode.length), (nodeCount += gen.nodeCount))
+    if (this.opts.code.process) sourceCode = this.opts.code.process(sourceCode, sch)
+    // console.log("\n\n\n *** \n", sourceCode)
+    const makeValidate = new Function(`${N.self}`, `${N.scope}`, sourceCode)
+    const validate: AnyValidateFunction = makeValidate(this, this.scope.get())
+    this.scope.value(validateName, {ref: validate})
+
+    validate.errors = null
+    validate.schema = sch.schema
+    validate.schemaEnv = sch
+    if (sch.$async) (validate as AsyncValidateFunction).$async = true
+    if (this.opts.code.source === true) {
+      validate.source = {validateName, validateCode, scopeValues: gen._values}
+    }
+    if (this.opts.unevaluated) {
+      const {props, items} = schemaCxt
+      validate.evaluated = {
+        props: props instanceof Name ? undefined : props,
+        items: items instanceof Name ? undefined : items,
+        dynamicProps: props instanceof Name,
+        dynamicItems: items instanceof Name,
+      }
+      if (validate.source) validate.source.evaluated = stringify(validate.evaluated)
+    }
+    sch.validate = validate
+    return sch
+  } catch (e) {
+    delete sch.validate
+    delete sch.validateName
+    if (sourceCode) this.logger.error("Error compiling schema, function code:", sourceCode)
+    // console.log("\n\n\n *** \n", sourceCode, this.opts)
+    throw e
+  } finally {
+    this._compilations.delete(sch)
+  }
+}
+
+export function resolveRef(
+  this: Ajv,
+  root: SchemaEnv,
+  baseId: string,
+  ref: string
+): AnySchema | SchemaEnv | undefined {
+  ref = resolveUrl(this.opts.uriResolver, baseId, ref)
+  const schOrFunc = root.refs[ref]
+  if (schOrFunc) return schOrFunc
+
+  let _sch = resolve.call(this, root, ref)
+  if (_sch === undefined) {
+    const schema = root.localRefs?.[ref] // TODO maybe localRefs should hold SchemaEnv
+    const {schemaId} = this.opts
+    if (schema) _sch = new SchemaEnv({schema, schemaId, root, baseId})
+  }
+
+  if (_sch === undefined) return
+  return (root.refs[ref] = inlineOrCompile.call(this, _sch))
+}
+
+function inlineOrCompile(this: Ajv, sch: SchemaEnv): AnySchema | SchemaEnv {
+  if (inlineRef(sch.schema, this.opts.inlineRefs)) return sch.schema
+  return sch.validate ? sch : compileSchema.call(this, sch)
+}
+
+// Index of schema compilation in the currently compiled list
+export function getCompilingSchema(this: Ajv, schEnv: SchemaEnv): SchemaEnv | void {
+  for (const sch of this._compilations) {
+    if (sameSchemaEnv(sch, schEnv)) return sch
+  }
+}
+
+function sameSchemaEnv(s1: SchemaEnv, s2: SchemaEnv): boolean {
+  return s1.schema === s2.schema && s1.root === s2.root && s1.baseId === s2.baseId
+}
+
+// resolve and compile the references ($ref)
+// TODO returns AnySchemaObject (if the schema can be inlined) or validation function
+function resolve(
+  this: Ajv,
+  root: SchemaEnv, // information about the root schema for the current schema
+  ref: string // reference to resolve
+): SchemaEnv | undefined {
+  let sch
+  while (typeof (sch = this.refs[ref]) == "string") ref = sch
+  return sch || this.schemas[ref] || resolveSchema.call(this, root, ref)
+}
+
+// Resolve schema, its root and baseId
+export function resolveSchema(
+  this: Ajv,
+  root: SchemaEnv, // root object with properties schema, refs TODO below SchemaEnv is assigned to it
+  ref: string // reference to resolve
+): SchemaEnv | undefined {
+  const p = this.opts.uriResolver.parse(ref)
+  const refPath = _getFullPath(this.opts.uriResolver, p)
+  let baseId = getFullPath(this.opts.uriResolver, root.baseId, undefined)
+  // TODO `Object.keys(root.schema).length > 0` should not be needed - but removing breaks 2 tests
+  if (Object.keys(root.schema).length > 0 && refPath === baseId) {
+    return getJsonPointer.call(this, p, root)
+  }
+
+  const id = normalizeId(refPath)
+  const schOrRef = this.refs[id] || this.schemas[id]
+  if (typeof schOrRef == "string") {
+    const sch = resolveSchema.call(this, root, schOrRef)
+    if (typeof sch?.schema !== "object") return
+    return getJsonPointer.call(this, p, sch)
+  }
+
+  if (typeof schOrRef?.schema !== "object") return
+  if (!schOrRef.validate) compileSchema.call(this, schOrRef)
+  if (id === normalizeId(ref)) {
+    const {schema} = schOrRef
+    const {schemaId} = this.opts
+    const schId = schema[schemaId]
+    if (schId) baseId = resolveUrl(this.opts.uriResolver, baseId, schId)
+    return new SchemaEnv({schema, schemaId, root, baseId})
+  }
+  return getJsonPointer.call(this, p, schOrRef)
+}
+
+const PREVENT_SCOPE_CHANGE = new Set([
+  "properties",
+  "patternProperties",
+  "enum",
+  "dependencies",
+  "definitions",
+])
+
+function getJsonPointer(
+  this: Ajv,
+  parsedRef: URI.URIComponents,
+  {baseId, schema, root}: SchemaEnv
+): SchemaEnv | undefined {
+  if (parsedRef.fragment?.[0] !== "/") return
+  for (const part of parsedRef.fragment.slice(1).split("/")) {
+    if (typeof schema === "boolean") return
+    const partSchema = schema[unescapeFragment(part)]
+    if (partSchema === undefined) return
+    schema = partSchema
+    // TODO PREVENT_SCOPE_CHANGE could be defined in keyword def?
+    const schId = typeof schema === "object" && schema[this.opts.schemaId]
+    if (!PREVENT_SCOPE_CHANGE.has(part) && schId) {
+      baseId = resolveUrl(this.opts.uriResolver, baseId, schId)
+    }
+  }
+  let env: SchemaEnv | undefined
+  if (typeof schema != "boolean" && schema.$ref && !schemaHasRulesButRef(schema, this.RULES)) {
+    const $ref = resolveUrl(this.opts.uriResolver, baseId, schema.$ref)
+    env = resolveSchema.call(this, root, $ref)
+  }
+  // even though resolution failed we need to return SchemaEnv to throw exception
+  // so that compileAsync loads missing schema.
+  const {schemaId} = this.opts
+  env = env || new SchemaEnv({schema, schemaId, root, baseId})
+  if (env.schema !== env.root.schema) return env
+  return undefined
+}

my-app/node_modules/ajv/lib/compile/jtd/parse.ts

@@ -0,0 +1,411 @@
+import type Ajv from "../../core"
+import type {SchemaObject} from "../../types"
+import {jtdForms, JTDForm, SchemaObjectMap} from "./types"
+import {SchemaEnv, getCompilingSchema} from ".."
+import {_, str, and, or, nil, not, CodeGen, Code, Name, SafeExpr} from "../codegen"
+import MissingRefError from "../ref_error"
+import N from "../names"
+import {hasPropFunc} from "../../vocabularies/code"
+import {hasRef} from "../../vocabularies/jtd/ref"
+import {intRange, IntType} from "../../vocabularies/jtd/type"
+import {parseJson, parseJsonNumber, parseJsonString} from "../../runtime/parseJson"
+import {useFunc} from "../util"
+import validTimestamp from "../../runtime/timestamp"
+
+type GenParse = (cxt: ParseCxt) => void
+
+const genParse: {[F in JTDForm]: GenParse} = {
+  elements: parseElements,
+  values: parseValues,
+  discriminator: parseDiscriminator,
+  properties: parseProperties,
+  optionalProperties: parseProperties,
+  enum: parseEnum,
+  type: parseType,
+  ref: parseRef,
+}
+
+interface ParseCxt {
+  readonly gen: CodeGen
+  readonly self: Ajv // current Ajv instance
+  readonly schemaEnv: SchemaEnv
+  readonly definitions: SchemaObjectMap
+  schema: SchemaObject
+  data: Code
+  parseName: Name
+  char: Name
+}
+
+export default function compileParser(
+  this: Ajv,
+  sch: SchemaEnv,
+  definitions: SchemaObjectMap
+): SchemaEnv {
+  const _sch = getCompilingSchema.call(this, sch)
+  if (_sch) return _sch
+  const {es5, lines} = this.opts.code
+  const {ownProperties} = this.opts
+  const gen = new CodeGen(this.scope, {es5, lines, ownProperties})
+  const parseName = gen.scopeName("parse")
+  const cxt: ParseCxt = {
+    self: this,
+    gen,
+    schema: sch.schema as SchemaObject,
+    schemaEnv: sch,
+    definitions,
+    data: N.data,
+    parseName,
+    char: gen.name("c"),
+  }
+
+  let sourceCode: string | undefined
+  try {
+    this._compilations.add(sch)
+    sch.parseName = parseName
+    parserFunction(cxt)
+    gen.optimize(this.opts.code.optimize)
+    const parseFuncCode = gen.toString()
+    sourceCode = `${gen.scopeRefs(N.scope)}return ${parseFuncCode}`
+    const makeParse = new Function(`${N.scope}`, sourceCode)
+    const parse: (json: string) => unknown = makeParse(this.scope.get())
+    this.scope.value(parseName, {ref: parse})
+    sch.parse = parse
+  } catch (e) {
+    if (sourceCode) this.logger.error("Error compiling parser, function code:", sourceCode)
+    delete sch.parse
+    delete sch.parseName
+    throw e
+  } finally {
+    this._compilations.delete(sch)
+  }
+  return sch
+}
+
+const undef = _`undefined`
+
+function parserFunction(cxt: ParseCxt): void {
+  const {gen, parseName, char} = cxt
+  gen.func(parseName, _`${N.json}, ${N.jsonPos}, ${N.jsonPart}`, false, () => {
+    gen.let(N.data)
+    gen.let(char)
+    gen.assign(_`${parseName}.message`, undef)
+    gen.assign(_`${parseName}.position`, undef)
+    gen.assign(N.jsonPos, _`${N.jsonPos} || 0`)
+    gen.const(N.jsonLen, _`${N.json}.length`)
+    parseCode(cxt)
+    skipWhitespace(cxt)
+    gen.if(N.jsonPart, () => {
+      gen.assign(_`${parseName}.position`, N.jsonPos)
+      gen.return(N.data)
+    })
+    gen.if(_`${N.jsonPos} === ${N.jsonLen}`, () => gen.return(N.data))
+    jsonSyntaxError(cxt)
+  })
+}
+
+function parseCode(cxt: ParseCxt): void {
+  let form: JTDForm | undefined
+  for (const key of jtdForms) {
+    if (key in cxt.schema) {
+      form = key
+      break
+    }
+  }
+  if (form) parseNullable(cxt, genParse[form])
+  else parseEmpty(cxt)
+}
+
+const parseBoolean = parseBooleanToken(true, parseBooleanToken(false, jsonSyntaxError))
+
+function parseNullable(cxt: ParseCxt, parseForm: GenParse): void {
+  const {gen, schema, data} = cxt
+  if (!schema.nullable) return parseForm(cxt)
+  tryParseToken(cxt, "null", parseForm, () => gen.assign(data, null))
+}
+
+function parseElements(cxt: ParseCxt): void {
+  const {gen, schema, data} = cxt
+  parseToken(cxt, "[")
+  const ix = gen.let("i", 0)
+  gen.assign(data, _`[]`)
+  parseItems(cxt, "]", () => {
+    const el = gen.let("el")
+    parseCode({...cxt, schema: schema.elements, data: el})
+    gen.assign(_`${data}[${ix}++]`, el)
+  })
+}
+
+function parseValues(cxt: ParseCxt): void {
+  const {gen, schema, data} = cxt
+  parseToken(cxt, "{")
+  gen.assign(data, _`{}`)
+  parseItems(cxt, "}", () => parseKeyValue(cxt, schema.values))
+}
+
+function parseItems(cxt: ParseCxt, endToken: string, block: () => void): void {
+  tryParseItems(cxt, endToken, block)
+  parseToken(cxt, endToken)
+}
+
+function tryParseItems(cxt: ParseCxt, endToken: string, block: () => void): void {
+  const {gen} = cxt
+  gen.for(_`;${N.jsonPos}<${N.jsonLen} && ${jsonSlice(1)}!==${endToken};`, () => {
+    block()
+    tryParseToken(cxt, ",", () => gen.break(), hasItem)
+  })
+
+  function hasItem(): void {
+    tryParseToken(cxt, endToken, () => {}, jsonSyntaxError)
+  }
+}
+
+function parseKeyValue(cxt: ParseCxt, schema: SchemaObject): void {
+  const {gen} = cxt
+  const key = gen.let("key")
+  parseString({...cxt, data: key})
+  parseToken(cxt, ":")
+  parsePropertyValue(cxt, key, schema)
+}
+
+function parseDiscriminator(cxt: ParseCxt): void {
+  const {gen, data, schema} = cxt
+  const {discriminator, mapping} = schema
+  parseToken(cxt, "{")
+  gen.assign(data, _`{}`)
+  const startPos = gen.const("pos", N.jsonPos)
+  const value = gen.let("value")
+  const tag = gen.let("tag")
+  tryParseItems(cxt, "}", () => {
+    const key = gen.let("key")
+    parseString({...cxt, data: key})
+    parseToken(cxt, ":")
+    gen.if(
+      _`${key} === ${discriminator}`,
+      () => {
+        parseString({...cxt, data: tag})
+        gen.assign(_`${data}[${key}]`, tag)
+        gen.break()
+      },
+      () => parseEmpty({...cxt, data: value}) // can be discarded/skipped
+    )
+  })
+  gen.assign(N.jsonPos, startPos)
+  gen.if(_`${tag} === undefined`)
+  parsingError(cxt, str`discriminator tag not found`)
+  for (const tagValue in mapping) {
+    gen.elseIf(_`${tag} === ${tagValue}`)
+    parseSchemaProperties({...cxt, schema: mapping[tagValue]}, discriminator)
+  }
+  gen.else()
+  parsingError(cxt, str`discriminator value not in schema`)
+  gen.endIf()
+}
+
+function parseProperties(cxt: ParseCxt): void {
+  const {gen, data} = cxt
+  parseToken(cxt, "{")
+  gen.assign(data, _`{}`)
+  parseSchemaProperties(cxt)
+}
+
+function parseSchemaProperties(cxt: ParseCxt, discriminator?: string): void {
+  const {gen, schema, data} = cxt
+  const {properties, optionalProperties, additionalProperties} = schema
+  parseItems(cxt, "}", () => {
+    const key = gen.let("key")
+    parseString({...cxt, data: key})
+    parseToken(cxt, ":")
+    gen.if(false)
+    parseDefinedProperty(cxt, key, properties)
+    parseDefinedProperty(cxt, key, optionalProperties)
+    if (discriminator) {
+      gen.elseIf(_`${key} === ${discriminator}`)
+      const tag = gen.let("tag")
+      parseString({...cxt, data: tag}) // can be discarded, it is already assigned
+    }
+    gen.else()
+    if (additionalProperties) {
+      parseEmpty({...cxt, data: _`${data}[${key}]`})
+    } else {
+      parsingError(cxt, str`property ${key} not allowed`)
+    }
+    gen.endIf()
+  })
+  if (properties) {
+    const hasProp = hasPropFunc(gen)
+    const allProps: Code = and(
+      ...Object.keys(properties).map((p): Code => _`${hasProp}.call(${data}, ${p})`)
+    )
+    gen.if(not(allProps), () => parsingError(cxt, str`missing required properties`))
+  }
+}
+
+function parseDefinedProperty(cxt: ParseCxt, key: Name, schemas: SchemaObjectMap = {}): void {
+  const {gen} = cxt
+  for (const prop in schemas) {
+    gen.elseIf(_`${key} === ${prop}`)
+    parsePropertyValue(cxt, key, schemas[prop] as SchemaObject)
+  }
+}
+
+function parsePropertyValue(cxt: ParseCxt, key: Name, schema: SchemaObject): void {
+  parseCode({...cxt, schema, data: _`${cxt.data}[${key}]`})
+}
+
+function parseType(cxt: ParseCxt): void {
+  const {gen, schema, data, self} = cxt
+  switch (schema.type) {
+    case "boolean":
+      parseBoolean(cxt)
+      break
+    case "string":
+      parseString(cxt)
+      break
+    case "timestamp": {
+      parseString(cxt)
+      const vts = useFunc(gen, validTimestamp)
+      const {allowDate, parseDate} = self.opts
+      const notValid = allowDate ? _`!${vts}(${data}, true)` : _`!${vts}(${data})`
+      const fail: Code = parseDate
+        ? or(notValid, _`(${data} = new Date(${data}), false)`, _`isNaN(${data}.valueOf())`)
+        : notValid
+      gen.if(fail, () => parsingError(cxt, str`invalid timestamp`))
+      break
+    }
+    case "float32":
+    case "float64":
+      parseNumber(cxt)
+      break
+    default: {
+      const t = schema.type as IntType
+      if (!self.opts.int32range && (t === "int32" || t === "uint32")) {
+        parseNumber(cxt, 16) // 2 ** 53 - max safe integer
+        if (t === "uint32") {
+          gen.if(_`${data} < 0`, () => parsingError(cxt, str`integer out of range`))
+        }
+      } else {
+        const [min, max, maxDigits] = intRange[t]
+        parseNumber(cxt, maxDigits)
+        gen.if(_`${data} < ${min} || ${data} > ${max}`, () =>
+          parsingError(cxt, str`integer out of range`)
+        )
+      }
+    }
+  }
+}
+
+function parseString(cxt: ParseCxt): void {
+  parseToken(cxt, '"')
+  parseWith(cxt, parseJsonString)
+}
+
+function parseEnum(cxt: ParseCxt): void {
+  const {gen, data, schema} = cxt
+  const enumSch = schema.enum
+  parseToken(cxt, '"')
+  // TODO loopEnum
+  gen.if(false)
+  for (const value of enumSch) {
+    const valueStr = JSON.stringify(value).slice(1) // remove starting quote
+    gen.elseIf(_`${jsonSlice(valueStr.length)} === ${valueStr}`)
+    gen.assign(data, str`${value}`)
+    gen.add(N.jsonPos, valueStr.length)
+  }
+  gen.else()
+  jsonSyntaxError(cxt)
+  gen.endIf()
+}
+
+function parseNumber(cxt: ParseCxt, maxDigits?: number): void {
+  const {gen} = cxt
+  skipWhitespace(cxt)
+  gen.if(
+    _`"-0123456789".indexOf(${jsonSlice(1)}) < 0`,
+    () => jsonSyntaxError(cxt),
+    () => parseWith(cxt, parseJsonNumber, maxDigits)
+  )
+}
+
+function parseBooleanToken(bool: boolean, fail: GenParse): GenParse {
+  return (cxt) => {
+    const {gen, data} = cxt
+    tryParseToken(
+      cxt,
+      `${bool}`,
+      () => fail(cxt),
+      () => gen.assign(data, bool)
+    )
+  }
+}
+
+function parseRef(cxt: ParseCxt): void {
+  const {gen, self, definitions, schema, schemaEnv} = cxt
+  const {ref} = schema
+  const refSchema = definitions[ref]
+  if (!refSchema) throw new MissingRefError(self.opts.uriResolver, "", ref, `No definition ${ref}`)
+  if (!hasRef(refSchema)) return parseCode({...cxt, schema: refSchema})
+  const {root} = schemaEnv
+  const sch = compileParser.call(self, new SchemaEnv({schema: refSchema, root}), definitions)
+  partialParse(cxt, getParser(gen, sch), true)
+}
+
+function getParser(gen: CodeGen, sch: SchemaEnv): Code {
+  return sch.parse
+    ? gen.scopeValue("parse", {ref: sch.parse})
+    : _`${gen.scopeValue("wrapper", {ref: sch})}.parse`
+}
+
+function parseEmpty(cxt: ParseCxt): void {
+  parseWith(cxt, parseJson)
+}
+
+function parseWith(cxt: ParseCxt, parseFunc: {code: string}, args?: SafeExpr): void {
+  partialParse(cxt, useFunc(cxt.gen, parseFunc), args)
+}
+
+function partialParse(cxt: ParseCxt, parseFunc: Name, args?: SafeExpr): void {
+  const {gen, data} = cxt
+  gen.assign(data, _`${parseFunc}(${N.json}, ${N.jsonPos}${args ? _`, ${args}` : nil})`)
+  gen.assign(N.jsonPos, _`${parseFunc}.position`)
+  gen.if(_`${data} === undefined`, () => parsingError(cxt, _`${parseFunc}.message`))
+}
+
+function parseToken(cxt: ParseCxt, tok: string): void {
+  tryParseToken(cxt, tok, jsonSyntaxError)
+}
+
+function tryParseToken(cxt: ParseCxt, tok: string, fail: GenParse, success?: GenParse): void {
+  const {gen} = cxt
+  const n = tok.length
+  skipWhitespace(cxt)
+  gen.if(
+    _`${jsonSlice(n)} === ${tok}`,
+    () => {
+      gen.add(N.jsonPos, n)
+      success?.(cxt)
+    },
+    () => fail(cxt)
+  )
+}
+
+function skipWhitespace({gen, char: c}: ParseCxt): void {
+  gen.code(
+    _`while((${c}=${N.json}[${N.jsonPos}],${c}===" "||${c}==="\\n"||${c}==="\\r"||${c}==="\\t"))${N.jsonPos}++;`
+  )
+}
+
+function jsonSlice(len: number | Name): Code {
+  return len === 1
+    ? _`${N.json}[${N.jsonPos}]`
+    : _`${N.json}.slice(${N.jsonPos}, ${N.jsonPos}+${len})`
+}
+
+function jsonSyntaxError(cxt: ParseCxt): void {
+  parsingError(cxt, _`"unexpected token " + ${N.json}[${N.jsonPos}]`)
+}
+
+function parsingError({gen, parseName}: ParseCxt, msg: Code): void {
+  gen.assign(_`${parseName}.message`, msg)
+  gen.assign(_`${parseName}.position`, N.jsonPos)
+  gen.return(undef)
+}

my-app/node_modules/ajv/lib/compile/jtd/serialize.ts

@@ -0,0 +1,266 @@
+import type Ajv from "../../core"
+import type {SchemaObject} from "../../types"
+import {jtdForms, JTDForm, SchemaObjectMap} from "./types"
+import {SchemaEnv, getCompilingSchema} from ".."
+import {_, str, and, getProperty, CodeGen, Code, Name} from "../codegen"
+import MissingRefError from "../ref_error"
+import N from "../names"
+import {isOwnProperty} from "../../vocabularies/code"
+import {hasRef} from "../../vocabularies/jtd/ref"
+import {useFunc} from "../util"
+import quote from "../../runtime/quote"
+
+const genSerialize: {[F in JTDForm]: (cxt: SerializeCxt) => void} = {
+  elements: serializeElements,
+  values: serializeValues,
+  discriminator: serializeDiscriminator,
+  properties: serializeProperties,
+  optionalProperties: serializeProperties,
+  enum: serializeString,
+  type: serializeType,
+  ref: serializeRef,
+}
+
+interface SerializeCxt {
+  readonly gen: CodeGen
+  readonly self: Ajv // current Ajv instance
+  readonly schemaEnv: SchemaEnv
+  readonly definitions: SchemaObjectMap
+  schema: SchemaObject
+  data: Code
+}
+
+export default function compileSerializer(
+  this: Ajv,
+  sch: SchemaEnv,
+  definitions: SchemaObjectMap
+): SchemaEnv {
+  const _sch = getCompilingSchema.call(this, sch)
+  if (_sch) return _sch
+  const {es5, lines} = this.opts.code
+  const {ownProperties} = this.opts
+  const gen = new CodeGen(this.scope, {es5, lines, ownProperties})
+  const serializeName = gen.scopeName("serialize")
+  const cxt: SerializeCxt = {
+    self: this,
+    gen,
+    schema: sch.schema as SchemaObject,
+    schemaEnv: sch,
+    definitions,
+    data: N.data,
+  }
+
+  let sourceCode: string | undefined
+  try {
+    this._compilations.add(sch)
+    sch.serializeName = serializeName
+    gen.func(serializeName, N.data, false, () => {
+      gen.let(N.json, str``)
+      serializeCode(cxt)
+      gen.return(N.json)
+    })
+    gen.optimize(this.opts.code.optimize)
+    const serializeFuncCode = gen.toString()
+    sourceCode = `${gen.scopeRefs(N.scope)}return ${serializeFuncCode}`
+    const makeSerialize = new Function(`${N.scope}`, sourceCode)
+    const serialize: (data: unknown) => string = makeSerialize(this.scope.get())
+    this.scope.value(serializeName, {ref: serialize})
+    sch.serialize = serialize
+  } catch (e) {
+    if (sourceCode) this.logger.error("Error compiling serializer, function code:", sourceCode)
+    delete sch.serialize
+    delete sch.serializeName
+    throw e
+  } finally {
+    this._compilations.delete(sch)
+  }
+  return sch
+}
+
+function serializeCode(cxt: SerializeCxt): void {
+  let form: JTDForm | undefined
+  for (const key of jtdForms) {
+    if (key in cxt.schema) {
+      form = key
+      break
+    }
+  }
+  serializeNullable(cxt, form ? genSerialize[form] : serializeEmpty)
+}
+
+function serializeNullable(cxt: SerializeCxt, serializeForm: (_cxt: SerializeCxt) => void): void {
+  const {gen, schema, data} = cxt
+  if (!schema.nullable) return serializeForm(cxt)
+  gen.if(
+    _`${data} === undefined || ${data} === null`,
+    () => gen.add(N.json, _`"null"`),
+    () => serializeForm(cxt)
+  )
+}
+
+function serializeElements(cxt: SerializeCxt): void {
+  const {gen, schema, data} = cxt
+  gen.add(N.json, str`[`)
+  const first = gen.let("first", true)
+  gen.forOf("el", data, (el) => {
+    addComma(cxt, first)
+    serializeCode({...cxt, schema: schema.elements, data: el})
+  })
+  gen.add(N.json, str`]`)
+}
+
+function serializeValues(cxt: SerializeCxt): void {
+  const {gen, schema, data} = cxt
+  gen.add(N.json, str`{`)
+  const first = gen.let("first", true)
+  gen.forIn("key", data, (key) => serializeKeyValue(cxt, key, schema.values, first))
+  gen.add(N.json, str`}`)
+}
+
+function serializeKeyValue(cxt: SerializeCxt, key: Name, schema: SchemaObject, first?: Name): void {
+  const {gen, data} = cxt
+  addComma(cxt, first)
+  serializeString({...cxt, data: key})
+  gen.add(N.json, str`:`)
+  const value = gen.const("value", _`${data}${getProperty(key)}`)
+  serializeCode({...cxt, schema, data: value})
+}
+
+function serializeDiscriminator(cxt: SerializeCxt): void {
+  const {gen, schema, data} = cxt
+  const {discriminator} = schema
+  gen.add(N.json, str`{${JSON.stringify(discriminator)}:`)
+  const tag = gen.const("tag", _`${data}${getProperty(discriminator)}`)
+  serializeString({...cxt, data: tag})
+  gen.if(false)
+  for (const tagValue in schema.mapping) {
+    gen.elseIf(_`${tag} === ${tagValue}`)
+    const sch = schema.mapping[tagValue]
+    serializeSchemaProperties({...cxt, schema: sch}, discriminator)
+  }
+  gen.endIf()
+  gen.add(N.json, str`}`)
+}
+
+function serializeProperties(cxt: SerializeCxt): void {
+  const {gen} = cxt
+  gen.add(N.json, str`{`)
+  serializeSchemaProperties(cxt)
+  gen.add(N.json, str`}`)
+}
+
+function serializeSchemaProperties(cxt: SerializeCxt, discriminator?: string): void {
+  const {gen, schema, data} = cxt
+  const {properties, optionalProperties} = schema
+  const props = keys(properties)
+  const optProps = keys(optionalProperties)
+  const allProps = allProperties(props.concat(optProps))
+  let first = !discriminator
+  let firstProp: Name | undefined
+
+  for (const key of props) {
+    if (first) first = false
+    else gen.add(N.json, str`,`)
+    serializeProperty(key, properties[key], keyValue(key))
+  }
+  if (first) firstProp = gen.let("first", true)
+  for (const key of optProps) {
+    const value = keyValue(key)
+    gen.if(and(_`${value} !== undefined`, isOwnProperty(gen, data, key)), () => {
+      addComma(cxt, firstProp)
+      serializeProperty(key, optionalProperties[key], value)
+    })
+  }
+  if (schema.additionalProperties) {
+    gen.forIn("key", data, (key) =>
+      gen.if(isAdditional(key, allProps), () => serializeKeyValue(cxt, key, {}, firstProp))
+    )
+  }
+
+  function keys(ps?: SchemaObjectMap): string[] {
+    return ps ? Object.keys(ps) : []
+  }
+
+  function allProperties(ps: string[]): string[] {
+    if (discriminator) ps.push(discriminator)
+    if (new Set(ps).size !== ps.length) {
+      throw new Error("JTD: properties/optionalProperties/disciminator overlap")
+    }
+    return ps
+  }
+
+  function keyValue(key: string): Name {
+    return gen.const("value", _`${data}${getProperty(key)}`)
+  }
+
+  function serializeProperty(key: string, propSchema: SchemaObject, value: Name): void {
+    gen.add(N.json, str`${JSON.stringify(key)}:`)
+    serializeCode({...cxt, schema: propSchema, data: value})
+  }
+
+  function isAdditional(key: Name, ps: string[]): Code | true {
+    return ps.length ? and(...ps.map((p) => _`${key} !== ${p}`)) : true
+  }
+}
+
+function serializeType(cxt: SerializeCxt): void {
+  const {gen, schema, data} = cxt
+  switch (schema.type) {
+    case "boolean":
+      gen.add(N.json, _`${data} ? "true" : "false"`)
+      break
+    case "string":
+      serializeString(cxt)
+      break
+    case "timestamp":
+      gen.if(
+        _`${data} instanceof Date`,
+        () => gen.add(N.json, _`'"' + ${data}.toISOString() + '"'`),
+        () => serializeString(cxt)
+      )
+      break
+    default:
+      serializeNumber(cxt)
+  }
+}
+
+function serializeString({gen, data}: SerializeCxt): void {
+  gen.add(N.json, _`${useFunc(gen, quote)}(${data})`)
+}
+
+function serializeNumber({gen, data}: SerializeCxt): void {
+  gen.add(N.json, _`"" + ${data}`)
+}
+
+function serializeRef(cxt: SerializeCxt): void {
+  const {gen, self, data, definitions, schema, schemaEnv} = cxt
+  const {ref} = schema
+  const refSchema = definitions[ref]
+  if (!refSchema) throw new MissingRefError(self.opts.uriResolver, "", ref, `No definition ${ref}`)
+  if (!hasRef(refSchema)) return serializeCode({...cxt, schema: refSchema})
+  const {root} = schemaEnv
+  const sch = compileSerializer.call(self, new SchemaEnv({schema: refSchema, root}), definitions)
+  gen.add(N.json, _`${getSerialize(gen, sch)}(${data})`)
+}
+
+function getSerialize(gen: CodeGen, sch: SchemaEnv): Code {
+  return sch.serialize
+    ? gen.scopeValue("serialize", {ref: sch.serialize})
+    : _`${gen.scopeValue("wrapper", {ref: sch})}.serialize`
+}
+
+function serializeEmpty({gen, data}: SerializeCxt): void {
+  gen.add(N.json, _`JSON.stringify(${data})`)
+}
+
+function addComma({gen}: SerializeCxt, first?: Name): void {
+  if (first) {
+    gen.if(
+      first,
+      () => gen.assign(first, false),
+      () => gen.add(N.json, str`,`)
+    )
+  } else {
+    gen.add(N.json, str`,`)
+  }
+}

my-app/node_modules/ajv/lib/compile/jtd/types.ts

@@ -0,0 +1,16 @@
+import type {SchemaObject} from "../../types"
+
+export type SchemaObjectMap = {[Ref in string]?: SchemaObject}
+
+export const jtdForms = [
+  "elements",
+  "values",
+  "discriminator",
+  "properties",
+  "optionalProperties",
+  "enum",
+  "type",
+  "ref",
+] as const
+
+export type JTDForm = typeof jtdForms[number]

my-app/node_modules/ajv/lib/compile/names.ts

@@ -0,0 +1,27 @@
+import {Name} from "./codegen"
+
+const names = {
+  // validation function arguments
+  data: new Name("data"), // data passed to validation function
+  // args passed from referencing schema
+  valCxt: new Name("valCxt"), // validation/data context - should not be used directly, it is destructured to the names below
+  instancePath: new Name("instancePath"),
+  parentData: new Name("parentData"),
+  parentDataProperty: new Name("parentDataProperty"),
+  rootData: new Name("rootData"), // root data - same as the data passed to the first/top validation function
+  dynamicAnchors: new Name("dynamicAnchors"), // used to support recursiveRef and dynamicRef
+  // function scoped variables
+  vErrors: new Name("vErrors"), // null or array of validation errors
+  errors: new Name("errors"), // counter of validation errors
+  this: new Name("this"),
+  // "globals"
+  self: new Name("self"),
+  scope: new Name("scope"),
+  // JTD serialize/parse name for JSON string and position
+  json: new Name("json"),
+  jsonPos: new Name("jsonPos"),
+  jsonLen: new Name("jsonLen"),
+  jsonPart: new Name("jsonPart"),
+}
+
+export default names

my-app/node_modules/ajv/lib/compile/ref_error.ts

@@ -0,0 +1,13 @@
+import {resolveUrl, normalizeId, getFullPath} from "./resolve"
+import type {UriResolver} from "../types"
+
+export default class MissingRefError extends Error {
+  readonly missingRef: string
+  readonly missingSchema: string
+
+  constructor(resolver: UriResolver, baseId: string, ref: string, msg?: string) {
+    super(msg || `can't resolve reference ${ref} from id ${baseId}`)
+    this.missingRef = resolveUrl(resolver, baseId, ref)
+    this.missingSchema = normalizeId(getFullPath(resolver, this.missingRef))
+  }
+}

my-app/node_modules/ajv/lib/compile/resolve.ts

@@ -0,0 +1,149 @@
+import type {AnySchema, AnySchemaObject, UriResolver} from "../types"
+import type Ajv from "../ajv"
+import type {URIComponents} from "uri-js"
+import {eachItem} from "./util"
+import * as equal from "fast-deep-equal"
+import * as traverse from "json-schema-traverse"
+
+// the hash of local references inside the schema (created by getSchemaRefs), used for inline resolution
+export type LocalRefs = {[Ref in string]?: AnySchemaObject}
+
+// TODO refactor to use keyword definitions
+const SIMPLE_INLINED = new Set([
+  "type",
+  "format",
+  "pattern",
+  "maxLength",
+  "minLength",
+  "maxProperties",
+  "minProperties",
+  "maxItems",
+  "minItems",
+  "maximum",
+  "minimum",
+  "uniqueItems",
+  "multipleOf",
+  "required",
+  "enum",
+  "const",
+])
+
+export function inlineRef(schema: AnySchema, limit: boolean | number = true): boolean {
+  if (typeof schema == "boolean") return true
+  if (limit === true) return !hasRef(schema)
+  if (!limit) return false
+  return countKeys(schema) <= limit
+}
+
+const REF_KEYWORDS = new Set([
+  "$ref",
+  "$recursiveRef",
+  "$recursiveAnchor",
+  "$dynamicRef",
+  "$dynamicAnchor",
+])
+
+function hasRef(schema: AnySchemaObject): boolean {
+  for (const key in schema) {
+    if (REF_KEYWORDS.has(key)) return true
+    const sch = schema[key]
+    if (Array.isArray(sch) && sch.some(hasRef)) return true
+    if (typeof sch == "object" && hasRef(sch)) return true
+  }
+  return false
+}
+
+function countKeys(schema: AnySchemaObject): number {
+  let count = 0
+  for (const key in schema) {
+    if (key === "$ref") return Infinity
+    count++
+    if (SIMPLE_INLINED.has(key)) continue
+    if (typeof schema[key] == "object") {
+      eachItem(schema[key], (sch) => (count += countKeys(sch)))
+    }
+    if (count === Infinity) return Infinity
+  }
+  return count
+}
+
+export function getFullPath(resolver: UriResolver, id = "", normalize?: boolean): string {
+  if (normalize !== false) id = normalizeId(id)
+  const p = resolver.parse(id)
+  return _getFullPath(resolver, p)
+}
+
+export function _getFullPath(resolver: UriResolver, p: URIComponents): string {
+  const serialized = resolver.serialize(p)
+  return serialized.split("#")[0] + "#"
+}
+
+const TRAILING_SLASH_HASH = /#\/?$/
+export function normalizeId(id: string | undefined): string {
+  return id ? id.replace(TRAILING_SLASH_HASH, "") : ""
+}
+
+export function resolveUrl(resolver: UriResolver, baseId: string, id: string): string {
+  id = normalizeId(id)
+  return resolver.resolve(baseId, id)
+}
+
+const ANCHOR = /^[a-z_][-a-z0-9._]*$/i
+
+export function getSchemaRefs(this: Ajv, schema: AnySchema, baseId: string): LocalRefs {
+  if (typeof schema == "boolean") return {}
+  const {schemaId, uriResolver} = this.opts
+  const schId = normalizeId(schema[schemaId] || baseId)
+  const baseIds: {[JsonPtr in string]?: string} = {"": schId}
+  const pathPrefix = getFullPath(uriResolver, schId, false)
+  const localRefs: LocalRefs = {}
+  const schemaRefs: Set<string> = new Set()
+
+  traverse(schema, {allKeys: true}, (sch, jsonPtr, _, parentJsonPtr) => {
+    if (parentJsonPtr === undefined) return
+    const fullPath = pathPrefix + jsonPtr
+    let baseId = baseIds[parentJsonPtr]
+    if (typeof sch[schemaId] == "string") baseId = addRef.call(this, sch[schemaId])
+    addAnchor.call(this, sch.$anchor)
+    addAnchor.call(this, sch.$dynamicAnchor)
+    baseIds[jsonPtr] = baseId
+
+    function addRef(this: Ajv, ref: string): string {
+      // eslint-disable-next-line @typescript-eslint/unbound-method
+      const _resolve = this.opts.uriResolver.resolve
+      ref = normalizeId(baseId ? _resolve(baseId, ref) : ref)
+      if (schemaRefs.has(ref)) throw ambiguos(ref)
+      schemaRefs.add(ref)
+      let schOrRef = this.refs[ref]
+      if (typeof schOrRef == "string") schOrRef = this.refs[schOrRef]
+      if (typeof schOrRef == "object") {
+        checkAmbiguosRef(sch, schOrRef.schema, ref)
+      } else if (ref !== normalizeId(fullPath)) {
+        if (ref[0] === "#") {
+          checkAmbiguosRef(sch, localRefs[ref], ref)
+          localRefs[ref] = sch
+        } else {
+          this.refs[ref] = fullPath
+        }
+      }
+      return ref
+    }
+
+    function addAnchor(this: Ajv, anchor: unknown): void {
+      if (typeof anchor == "string") {
+        if (!ANCHOR.test(anchor)) throw new Error(`invalid anchor "${anchor}"`)
+        addRef.call(this, `#${anchor}`)
+      }
+    }
+  })
+
+  return localRefs
+
+  function checkAmbiguosRef(sch1: AnySchema, sch2: AnySchema | undefined, ref: string): void {
+    if (sch2 !== undefined && !equal(sch1, sch2)) throw ambiguos(ref)
+  }
+
+  function ambiguos(ref: string): Error {
+    return new Error(`reference "${ref}" resolves to more than one schema`)
+  }
+}

my-app/node_modules/ajv/lib/compile/rules.ts

@@ -0,0 +1,50 @@
+import type {AddedKeywordDefinition} from "../types"
+
+const _jsonTypes = ["string", "number", "integer", "boolean", "null", "object", "array"] as const
+
+export type JSONType = typeof _jsonTypes[number]
+
+const jsonTypes: Set<string> = new Set(_jsonTypes)
+
+export function isJSONType(x: unknown): x is JSONType {
+  return typeof x == "string" && jsonTypes.has(x)
+}
+
+type ValidationTypes = {
+  [K in JSONType]: boolean | RuleGroup | undefined
+}
+
+export interface ValidationRules {
+  rules: RuleGroup[]
+  post: RuleGroup
+  all: {[Key in string]?: boolean | Rule} // rules that have to be validated
+  keywords: {[Key in string]?: boolean} // all known keywords (superset of "all")
+  types: ValidationTypes
+}
+
+export interface RuleGroup {
+  type?: JSONType
+  rules: Rule[]
+}
+
+// This interface wraps KeywordDefinition because definition can have multiple keywords
+export interface Rule {
+  keyword: string
+  definition: AddedKeywordDefinition
+}
+
+export function getRules(): ValidationRules {
+  const groups: Record<"number" | "string" | "array" | "object", RuleGroup> = {
+    number: {type: "number", rules: []},
+    string: {type: "string", rules: []},
+    array: {type: "array", rules: []},
+    object: {type: "object", rules: []},
+  }
+  return {
+    types: {...groups, integer: true, boolean: true, null: true},
+    rules: [{rules: []}, groups.number, groups.string, groups.array, groups.object],
+    post: {rules: []},
+    all: {},
+    keywords: {},
+  }
+}

my-app/node_modules/ajv/lib/compile/util.ts

@@ -0,0 +1,213 @@
+import type {AnySchema, EvaluatedProperties, EvaluatedItems} from "../types"
+import type {SchemaCxt, SchemaObjCxt} from "."
+import {_, getProperty, Code, Name, CodeGen} from "./codegen"
+import {_Code} from "./codegen/code"
+import type {Rule, ValidationRules} from "./rules"
+
+// TODO refactor to use Set
+export function toHash<T extends string = string>(arr: T[]): {[K in T]?: true} {
+  const hash: {[K in T]?: true} = {}
+  for (const item of arr) hash[item] = true
+  return hash
+}
+
+export function alwaysValidSchema(it: SchemaCxt, schema: AnySchema): boolean | void {
+  if (typeof schema == "boolean") return schema
+  if (Object.keys(schema).length === 0) return true
+  checkUnknownRules(it, schema)
+  return !schemaHasRules(schema, it.self.RULES.all)
+}
+
+export function checkUnknownRules(it: SchemaCxt, schema: AnySchema = it.schema): void {
+  const {opts, self} = it
+  if (!opts.strictSchema) return
+  if (typeof schema === "boolean") return
+  const rules = self.RULES.keywords
+  for (const key in schema) {
+    if (!rules[key]) checkStrictMode(it, `unknown keyword: "${key}"`)
+  }
+}
+
+export function schemaHasRules(
+  schema: AnySchema,
+  rules: {[Key in string]?: boolean | Rule}
+): boolean {
+  if (typeof schema == "boolean") return !schema
+  for (const key in schema) if (rules[key]) return true
+  return false
+}
+
+export function schemaHasRulesButRef(schema: AnySchema, RULES: ValidationRules): boolean {
+  if (typeof schema == "boolean") return !schema
+  for (const key in schema) if (key !== "$ref" && RULES.all[key]) return true
+  return false
+}
+
+export function schemaRefOrVal(
+  {topSchemaRef, schemaPath}: SchemaObjCxt,
+  schema: unknown,
+  keyword: string,
+  $data?: string | false
+): Code | number | boolean {
+  if (!$data) {
+    if (typeof schema == "number" || typeof schema == "boolean") return schema
+    if (typeof schema == "string") return _`${schema}`
+  }
+  return _`${topSchemaRef}${schemaPath}${getProperty(keyword)}`
+}
+
+export function unescapeFragment(str: string): string {
+  return unescapeJsonPointer(decodeURIComponent(str))
+}
+
+export function escapeFragment(str: string | number): string {
+  return encodeURIComponent(escapeJsonPointer(str))
+}
+
+export function escapeJsonPointer(str: string | number): string {
+  if (typeof str == "number") return `${str}`
+  return str.replace(/~/g, "~0").replace(/\//g, "~1")
+}
+
+export function unescapeJsonPointer(str: string): string {
+  return str.replace(/~1/g, "/").replace(/~0/g, "~")
+}
+
+export function eachItem<T>(xs: T | T[], f: (x: T) => void): void {
+  if (Array.isArray(xs)) {
+    for (const x of xs) f(x)
+  } else {
+    f(xs)
+  }
+}
+
+type SomeEvaluated = EvaluatedProperties | EvaluatedItems
+
+type MergeEvaluatedFunc<T extends SomeEvaluated> = (
+  gen: CodeGen,
+  from: Name | T,
+  to: Name | Exclude<T, true> | undefined,
+  toName?: typeof Name
+) => Name | T
+
+interface MakeMergeFuncArgs<T extends SomeEvaluated> {
+  mergeNames: (gen: CodeGen, from: Name, to: Name) => void
+  mergeToName: (gen: CodeGen, from: T, to: Name) => void
+  mergeValues: (from: T, to: Exclude<T, true>) => T
+  resultToName: (gen: CodeGen, res?: T) => Name
+}
+
+function makeMergeEvaluated<T extends SomeEvaluated>({
+  mergeNames,
+  mergeToName,
+  mergeValues,
+  resultToName,
+}: MakeMergeFuncArgs<T>): MergeEvaluatedFunc<T> {
+  return (gen, from, to, toName) => {
+    const res =
+      to === undefined
+        ? from
+        : to instanceof Name
+        ? (from instanceof Name ? mergeNames(gen, from, to) : mergeToName(gen, from, to), to)
+        : from instanceof Name
+        ? (mergeToName(gen, to, from), from)
+        : mergeValues(from, to)
+    return toName === Name && !(res instanceof Name) ? resultToName(gen, res) : res
+  }
+}
+
+interface MergeEvaluated {
+  props: MergeEvaluatedFunc<EvaluatedProperties>
+  items: MergeEvaluatedFunc<EvaluatedItems>
+}
+
+export const mergeEvaluated: MergeEvaluated = {
+  props: makeMergeEvaluated({
+    mergeNames: (gen, from, to) =>
+      gen.if(_`${to} !== true && ${from} !== undefined`, () => {
+        gen.if(
+          _`${from} === true`,
+          () => gen.assign(to, true),
+          () => gen.assign(to, _`${to} || {}`).code(_`Object.assign(${to}, ${from})`)
+        )
+      }),
+    mergeToName: (gen, from, to) =>
+      gen.if(_`${to} !== true`, () => {
+        if (from === true) {
+          gen.assign(to, true)
+        } else {
+          gen.assign(to, _`${to} || {}`)
+          setEvaluated(gen, to, from)
+        }
+      }),
+    mergeValues: (from, to) => (from === true ? true : {...from, ...to}),
+    resultToName: evaluatedPropsToName,
+  }),
+  items: makeMergeEvaluated({
+    mergeNames: (gen, from, to) =>
+      gen.if(_`${to} !== true && ${from} !== undefined`, () =>
+        gen.assign(to, _`${from} === true ? true : ${to} > ${from} ? ${to} : ${from}`)
+      ),
+    mergeToName: (gen, from, to) =>
+      gen.if(_`${to} !== true`, () =>
+        gen.assign(to, from === true ? true : _`${to} > ${from} ? ${to} : ${from}`)
+      ),
+    mergeValues: (from, to) => (from === true ? true : Math.max(from, to)),
+    resultToName: (gen, items) => gen.var("items", items),
+  }),
+}
+
+export function evaluatedPropsToName(gen: CodeGen, ps?: EvaluatedProperties): Name {
+  if (ps === true) return gen.var("props", true)
+  const props = gen.var("props", _`{}`)
+  if (ps !== undefined) setEvaluated(gen, props, ps)
+  return props
+}
+
+export function setEvaluated(gen: CodeGen, props: Name, ps: {[K in string]?: true}): void {
+  Object.keys(ps).forEach((p) => gen.assign(_`${props}${getProperty(p)}`, true))
+}
+
+const snippets: {[S in string]?: _Code} = {}
+
+export function useFunc(gen: CodeGen, f: {code: string}): Name {
+  return gen.scopeValue("func", {
+    ref: f,
+    code: snippets[f.code] || (snippets[f.code] = new _Code(f.code)),
+  })
+}
+
+export enum Type {
+  Num,
+  Str,
+}
+
+export function getErrorPath(
+  dataProp: Name | string | number,
+  dataPropType?: Type,
+  jsPropertySyntax?: boolean
+): Code | string {
+  // let path
+  if (dataProp instanceof Name) {
+    const isNumber = dataPropType === Type.Num
+    return jsPropertySyntax
+      ? isNumber
+        ? _`"[" + ${dataProp} + "]"`
+        : _`"['" + ${dataProp} + "']"`
+      : isNumber
+      ? _`"/" + ${dataProp}`
+      : _`"/" + ${dataProp}.replace(/~/g, "~0").replace(/\\//g, "~1")` // TODO maybe use global escapePointer
+  }
+  return jsPropertySyntax ? getProperty(dataProp).toString() : "/" + escapeJsonPointer(dataProp)
+}
+
+export function checkStrictMode(
+  it: SchemaCxt,
+  msg: string,
+  mode: boolean | "log" = it.opts.strictSchema
+): void {
+  if (!mode) return
+  msg = `strict mode: ${msg}`
+  if (mode === true) throw new Error(msg)
+  it.self.logger.warn(msg)
+}

my-app/node_modules/ajv/lib/compile/validate/applicability.ts

@@ -0,0 +1,22 @@
+import type {AnySchemaObject} from "../../types"
+import type {SchemaObjCxt} from ".."
+import type {JSONType, RuleGroup, Rule} from "../rules"
+
+export function schemaHasRulesForType(
+  {schema, self}: SchemaObjCxt,
+  type: JSONType
+): boolean | undefined {
+  const group = self.RULES.types[type]
+  return group && group !== true && shouldUseGroup(schema, group)
+}
+
+export function shouldUseGroup(schema: AnySchemaObject, group: RuleGroup): boolean {
+  return group.rules.some((rule) => shouldUseRule(schema, rule))
+}
+
+export function shouldUseRule(schema: AnySchemaObject, rule: Rule): boolean | undefined {
+  return (
+    schema[rule.keyword] !== undefined ||
+    rule.definition.implements?.some((kwd) => schema[kwd] !== undefined)
+  )
+}

my-app/node_modules/ajv/lib/compile/validate/boolSchema.ts

@@ -0,0 +1,47 @@
+import type {KeywordErrorDefinition, KeywordErrorCxt} from "../../types"
+import type {SchemaCxt} from ".."
+import {reportError} from "../errors"
+import {_, Name} from "../codegen"
+import N from "../names"
+
+const boolError: KeywordErrorDefinition = {
+  message: "boolean schema is false",
+}
+
+export function topBoolOrEmptySchema(it: SchemaCxt): void {
+  const {gen, schema, validateName} = it
+  if (schema === false) {
+    falseSchemaError(it, false)
+  } else if (typeof schema == "object" && schema.$async === true) {
+    gen.return(N.data)
+  } else {
+    gen.assign(_`${validateName}.errors`, null)
+    gen.return(true)
+  }
+}
+
+export function boolOrEmptySchema(it: SchemaCxt, valid: Name): void {
+  const {gen, schema} = it
+  if (schema === false) {
+    gen.var(valid, false) // TODO var
+    falseSchemaError(it)
+  } else {
+    gen.var(valid, true) // TODO var
+  }
+}
+
+function falseSchemaError(it: SchemaCxt, overrideAllErrors?: boolean): void {
+  const {gen, data} = it
+  // TODO maybe some other interface should be used for non-keyword validation errors...
+  const cxt: KeywordErrorCxt = {
+    gen,
+    keyword: "false schema",
+    data,
+    schema: false,
+    schemaCode: false,
+    schemaValue: false,
+    params: {},
+    it,
+  }
+  reportError(cxt, boolError, undefined, overrideAllErrors)
+}

my-app/node_modules/ajv/lib/compile/validate/dataType.ts

@@ -0,0 +1,229 @@
+import type {
+  KeywordErrorDefinition,
+  KeywordErrorCxt,
+  ErrorObject,
+  AnySchemaObject,
+} from "../../types"
+import type {SchemaObjCxt} from ".."
+import {isJSONType, JSONType} from "../rules"
+import {schemaHasRulesForType} from "./applicability"
+import {reportError} from "../errors"
+import {_, nil, and, not, operators, Code, Name} from "../codegen"
+import {toHash, schemaRefOrVal} from "../util"
+
+export enum DataType {
+  Correct,
+  Wrong,
+}
+
+export function getSchemaTypes(schema: AnySchemaObject): JSONType[] {
+  const types = getJSONTypes(schema.type)
+  const hasNull = types.includes("null")
+  if (hasNull) {
+    if (schema.nullable === false) throw new Error("type: null contradicts nullable: false")
+  } else {
+    if (!types.length && schema.nullable !== undefined) {
+      throw new Error('"nullable" cannot be used without "type"')
+    }
+    if (schema.nullable === true) types.push("null")
+  }
+  return types
+}
+
+export function getJSONTypes(ts: unknown | unknown[]): JSONType[] {
+  const types: unknown[] = Array.isArray(ts) ? ts : ts ? [ts] : []
+  if (types.every(isJSONType)) return types
+  throw new Error("type must be JSONType or JSONType[]: " + types.join(","))
+}
+
+export function coerceAndCheckDataType(it: SchemaObjCxt, types: JSONType[]): boolean {
+  const {gen, data, opts} = it
+  const coerceTo = coerceToTypes(types, opts.coerceTypes)
+  const checkTypes =
+    types.length > 0 &&
+    !(coerceTo.length === 0 && types.length === 1 && schemaHasRulesForType(it, types[0]))
+  if (checkTypes) {
+    const wrongType = checkDataTypes(types, data, opts.strictNumbers, DataType.Wrong)
+    gen.if(wrongType, () => {
+      if (coerceTo.length) coerceData(it, types, coerceTo)
+      else reportTypeError(it)
+    })
+  }
+  return checkTypes
+}
+
+const COERCIBLE: Set<JSONType> = new Set(["string", "number", "integer", "boolean", "null"])
+function coerceToTypes(types: JSONType[], coerceTypes?: boolean | "array"): JSONType[] {
+  return coerceTypes
+    ? types.filter((t) => COERCIBLE.has(t) || (coerceTypes === "array" && t === "array"))
+    : []
+}
+
+function coerceData(it: SchemaObjCxt, types: JSONType[], coerceTo: JSONType[]): void {
+  const {gen, data, opts} = it
+  const dataType = gen.let("dataType", _`typeof ${data}`)
+  const coerced = gen.let("coerced", _`undefined`)
+  if (opts.coerceTypes === "array") {
+    gen.if(_`${dataType} == 'object' && Array.isArray(${data}) && ${data}.length == 1`, () =>
+      gen
+        .assign(data, _`${data}[0]`)
+        .assign(dataType, _`typeof ${data}`)
+        .if(checkDataTypes(types, data, opts.strictNumbers), () => gen.assign(coerced, data))
+    )
+  }
+  gen.if(_`${coerced} !== undefined`)
+  for (const t of coerceTo) {
+    if (COERCIBLE.has(t) || (t === "array" && opts.coerceTypes === "array")) {
+      coerceSpecificType(t)
+    }
+  }
+  gen.else()
+  reportTypeError(it)
+  gen.endIf()
+
+  gen.if(_`${coerced} !== undefined`, () => {
+    gen.assign(data, coerced)
+    assignParentData(it, coerced)
+  })
+
+  function coerceSpecificType(t: string): void {
+    switch (t) {
+      case "string":
+        gen
+          .elseIf(_`${dataType} == "number" || ${dataType} == "boolean"`)
+          .assign(coerced, _`"" + ${data}`)
+          .elseIf(_`${data} === null`)
+          .assign(coerced, _`""`)
+        return
+      case "number":
+        gen
+          .elseIf(
+            _`${dataType} == "boolean" || ${data} === null
+              || (${dataType} == "string" && ${data} && ${data} == +${data})`
+          )
+          .assign(coerced, _`+${data}`)
+        return
+      case "integer":
+        gen
+          .elseIf(
+            _`${dataType} === "boolean" || ${data} === null
+              || (${dataType} === "string" && ${data} && ${data} == +${data} && !(${data} % 1))`
+          )
+          .assign(coerced, _`+${data}`)
+        return
+      case "boolean":
+        gen
+          .elseIf(_`${data} === "false" || ${data} === 0 || ${data} === null`)
+          .assign(coerced, false)
+          .elseIf(_`${data} === "true" || ${data} === 1`)
+          .assign(coerced, true)
+        return
+      case "null":
+        gen.elseIf(_`${data} === "" || ${data} === 0 || ${data} === false`)
+        gen.assign(coerced, null)
+        return
+
+      case "array":
+        gen
+          .elseIf(
+            _`${dataType} === "string" || ${dataType} === "number"
+              || ${dataType} === "boolean" || ${data} === null`
+          )
+          .assign(coerced, _`[${data}]`)
+    }
+  }
+}
+
+function assignParentData({gen, parentData, parentDataProperty}: SchemaObjCxt, expr: Name): void {
+  // TODO use gen.property
+  gen.if(_`${parentData} !== undefined`, () =>
+    gen.assign(_`${parentData}[${parentDataProperty}]`, expr)
+  )
+}
+
+export function checkDataType(
+  dataType: JSONType,
+  data: Name,
+  strictNums?: boolean | "log",
+  correct = DataType.Correct
+): Code {
+  const EQ = correct === DataType.Correct ? operators.EQ : operators.NEQ
+  let cond: Code
+  switch (dataType) {
+    case "null":
+      return _`${data} ${EQ} null`
+    case "array":
+      cond = _`Array.isArray(${data})`
+      break
+    case "object":
+      cond = _`${data} && typeof ${data} == "object" && !Array.isArray(${data})`
+      break
+    case "integer":
+      cond = numCond(_`!(${data} % 1) && !isNaN(${data})`)
+      break
+    case "number":
+      cond = numCond()
+      break
+    default:
+      return _`typeof ${data} ${EQ} ${dataType}`
+  }
+  return correct === DataType.Correct ? cond : not(cond)
+
+  function numCond(_cond: Code = nil): Code {
+    return and(_`typeof ${data} == "number"`, _cond, strictNums ? _`isFinite(${data})` : nil)
+  }
+}
+
+export function checkDataTypes(
+  dataTypes: JSONType[],
+  data: Name,
+  strictNums?: boolean | "log",
+  correct?: DataType
+): Code {
+  if (dataTypes.length === 1) {
+    return checkDataType(dataTypes[0], data, strictNums, correct)
+  }
+  let cond: Code
+  const types = toHash(dataTypes)
+  if (types.array && types.object) {
+    const notObj = _`typeof ${data} != "object"`
+    cond = types.null ? notObj : _`!${data} || ${notObj}`
+    delete types.null
+    delete types.array
+    delete types.object
+  } else {
+    cond = nil
+  }
+  if (types.number) delete types.integer
+  for (const t in types) cond = and(cond, checkDataType(t as JSONType, data, strictNums, correct))
+  return cond
+}
+
+export type TypeError = ErrorObject<"type", {type: string}>
+
+const typeError: KeywordErrorDefinition = {
+  message: ({schema}) => `must be ${schema}`,
+  params: ({schema, schemaValue}) =>
+    typeof schema == "string" ? _`{type: ${schema}}` : _`{type: ${schemaValue}}`,
+}
+
+export function reportTypeError(it: SchemaObjCxt): void {
+  const cxt = getTypeErrorContext(it)
+  reportError(cxt, typeError)
+}
+
+function getTypeErrorContext(it: SchemaObjCxt): KeywordErrorCxt {
+  const {gen, data, schema} = it
+  const schemaCode = schemaRefOrVal(it, schema, "type")
+  return {
+    gen,
+    keyword: "type",
+    data,
+    schema: schema.type,
+    schemaCode,
+    schemaValue: schemaCode,
+    parentSchema: schema,
+    params: {},
+    it,
+  }
+}

my-app/node_modules/ajv/lib/compile/validate/defaults.ts

@@ -0,0 +1,32 @@
+import type {SchemaObjCxt} from ".."
+import {_, getProperty, stringify} from "../codegen"
+import {checkStrictMode} from "../util"
+
+export function assignDefaults(it: SchemaObjCxt, ty?: string): void {
+  const {properties, items} = it.schema
+  if (ty === "object" && properties) {
+    for (const key in properties) {
+      assignDefault(it, key, properties[key].default)
+    }
+  } else if (ty === "array" && Array.isArray(items)) {
+    items.forEach((sch, i: number) => assignDefault(it, i, sch.default))
+  }
+}
+
+function assignDefault(it: SchemaObjCxt, prop: string | number, defaultValue: unknown): void {
+  const {gen, compositeRule, data, opts} = it
+  if (defaultValue === undefined) return
+  const childData = _`${data}${getProperty(prop)}`
+  if (compositeRule) {
+    checkStrictMode(it, `default is ignored for: ${childData}`)
+    return
+  }
+
+  let condition = _`${childData} === undefined`
+  if (opts.useDefaults === "empty") {
+    condition = _`${condition} || ${childData} === null || ${childData} === ""`
+  }
+  // `${childData} === undefined` +
+  // (opts.useDefaults === "empty" ? ` || ${childData} === null || ${childData} === ""` : "")
+  gen.if(condition, _`${childData} = ${stringify(defaultValue)}`)
+}

my-app/node_modules/ajv/lib/compile/validate/index.ts

@@ -0,0 +1,582 @@
+import type {
+  AddedKeywordDefinition,
+  AnySchema,
+  AnySchemaObject,
+  KeywordErrorCxt,
+  KeywordCxtParams,
+} from "../../types"
+import type {SchemaCxt, SchemaObjCxt} from ".."
+import type {InstanceOptions} from "../../core"
+import {boolOrEmptySchema, topBoolOrEmptySchema} from "./boolSchema"
+import {coerceAndCheckDataType, getSchemaTypes} from "./dataType"
+import {shouldUseGroup, shouldUseRule} from "./applicability"
+import {checkDataType, checkDataTypes, reportTypeError, DataType} from "./dataType"
+import {assignDefaults} from "./defaults"
+import {funcKeywordCode, macroKeywordCode, validateKeywordUsage, validSchemaType} from "./keyword"
+import {getSubschema, extendSubschemaData, SubschemaArgs, extendSubschemaMode} from "./subschema"
+import {_, nil, str, or, not, getProperty, Block, Code, Name, CodeGen} from "../codegen"
+import N from "../names"
+import {resolveUrl} from "../resolve"
+import {
+  schemaRefOrVal,
+  schemaHasRulesButRef,
+  checkUnknownRules,
+  checkStrictMode,
+  unescapeJsonPointer,
+  mergeEvaluated,
+} from "../util"
+import type {JSONType, Rule, RuleGroup} from "../rules"
+import {
+  ErrorPaths,
+  reportError,
+  reportExtraError,
+  resetErrorsCount,
+  keyword$DataError,
+} from "../errors"
+
+// schema compilation - generates validation function, subschemaCode (below) is used for subschemas
+export function validateFunctionCode(it: SchemaCxt): void {
+  if (isSchemaObj(it)) {
+    checkKeywords(it)
+    if (schemaCxtHasRules(it)) {
+      topSchemaObjCode(it)
+      return
+    }
+  }
+  validateFunction(it, () => topBoolOrEmptySchema(it))
+}
+
+function validateFunction(
+  {gen, validateName, schema, schemaEnv, opts}: SchemaCxt,
+  body: Block
+): void {
+  if (opts.code.es5) {
+    gen.func(validateName, _`${N.data}, ${N.valCxt}`, schemaEnv.$async, () => {
+      gen.code(_`"use strict"; ${funcSourceUrl(schema, opts)}`)
+      destructureValCxtES5(gen, opts)
+      gen.code(body)
+    })
+  } else {
+    gen.func(validateName, _`${N.data}, ${destructureValCxt(opts)}`, schemaEnv.$async, () =>
+      gen.code(funcSourceUrl(schema, opts)).code(body)
+    )
+  }
+}
+
+function destructureValCxt(opts: InstanceOptions): Code {
+  return _`{${N.instancePath}="", ${N.parentData}, ${N.parentDataProperty}, ${N.rootData}=${
+    N.data
+  }${opts.dynamicRef ? _`, ${N.dynamicAnchors}={}` : nil}}={}`
+}
+
+function destructureValCxtES5(gen: CodeGen, opts: InstanceOptions): void {
+  gen.if(
+    N.valCxt,
+    () => {
+      gen.var(N.instancePath, _`${N.valCxt}.${N.instancePath}`)
+      gen.var(N.parentData, _`${N.valCxt}.${N.parentData}`)
+      gen.var(N.parentDataProperty, _`${N.valCxt}.${N.parentDataProperty}`)
+      gen.var(N.rootData, _`${N.valCxt}.${N.rootData}`)
+      if (opts.dynamicRef) gen.var(N.dynamicAnchors, _`${N.valCxt}.${N.dynamicAnchors}`)
+    },
+    () => {
+      gen.var(N.instancePath, _`""`)
+      gen.var(N.parentData, _`undefined`)
+      gen.var(N.parentDataProperty, _`undefined`)
+      gen.var(N.rootData, N.data)
+      if (opts.dynamicRef) gen.var(N.dynamicAnchors, _`{}`)
+    }
+  )
+}
+
+function topSchemaObjCode(it: SchemaObjCxt): void {
+  const {schema, opts, gen} = it
+  validateFunction(it, () => {
+    if (opts.$comment && schema.$comment) commentKeyword(it)
+    checkNoDefault(it)
+    gen.let(N.vErrors, null)
+    gen.let(N.errors, 0)
+    if (opts.unevaluated) resetEvaluated(it)
+    typeAndKeywords(it)
+    returnResults(it)
+  })
+  return
+}
+
+function resetEvaluated(it: SchemaObjCxt): void {
+  // TODO maybe some hook to execute it in the end to check whether props/items are Name, as in assignEvaluated
+  const {gen, validateName} = it
+  it.evaluated = gen.const("evaluated", _`${validateName}.evaluated`)
+  gen.if(_`${it.evaluated}.dynamicProps`, () => gen.assign(_`${it.evaluated}.props`, _`undefined`))
+  gen.if(_`${it.evaluated}.dynamicItems`, () => gen.assign(_`${it.evaluated}.items`, _`undefined`))
+}
+
+function funcSourceUrl(schema: AnySchema, opts: InstanceOptions): Code {
+  const schId = typeof schema == "object" && schema[opts.schemaId]
+  return schId && (opts.code.source || opts.code.process) ? _`/*# sourceURL=${schId} */` : nil
+}
+
+// schema compilation - this function is used recursively to generate code for sub-schemas
+function subschemaCode(it: SchemaCxt, valid: Name): void {
+  if (isSchemaObj(it)) {
+    checkKeywords(it)
+    if (schemaCxtHasRules(it)) {
+      subSchemaObjCode(it, valid)
+      return
+    }
+  }
+  boolOrEmptySchema(it, valid)
+}
+
+function schemaCxtHasRules({schema, self}: SchemaCxt): boolean {
+  if (typeof schema == "boolean") return !schema
+  for (const key in schema) if (self.RULES.all[key]) return true
+  return false
+}
+
+function isSchemaObj(it: SchemaCxt): it is SchemaObjCxt {
+  return typeof it.schema != "boolean"
+}
+
+function subSchemaObjCode(it: SchemaObjCxt, valid: Name): void {
+  const {schema, gen, opts} = it
+  if (opts.$comment && schema.$comment) commentKeyword(it)
+  updateContext(it)
+  checkAsyncSchema(it)
+  const errsCount = gen.const("_errs", N.errors)
+  typeAndKeywords(it, errsCount)
+  // TODO var
+  gen.var(valid, _`${errsCount} === ${N.errors}`)
+}
+
+function checkKeywords(it: SchemaObjCxt): void {
+  checkUnknownRules(it)
+  checkRefsAndKeywords(it)
+}
+
+function typeAndKeywords(it: SchemaObjCxt, errsCount?: Name): void {
+  if (it.opts.jtd) return schemaKeywords(it, [], false, errsCount)
+  const types = getSchemaTypes(it.schema)
+  const checkedTypes = coerceAndCheckDataType(it, types)
+  schemaKeywords(it, types, !checkedTypes, errsCount)
+}
+
+function checkRefsAndKeywords(it: SchemaObjCxt): void {
+  const {schema, errSchemaPath, opts, self} = it
+  if (schema.$ref && opts.ignoreKeywordsWithRef && schemaHasRulesButRef(schema, self.RULES)) {
+    self.logger.warn(`$ref: keywords ignored in schema at path "${errSchemaPath}"`)
+  }
+}
+
+function checkNoDefault(it: SchemaObjCxt): void {
+  const {schema, opts} = it
+  if (schema.default !== undefined && opts.useDefaults && opts.strictSchema) {
+    checkStrictMode(it, "default is ignored in the schema root")
+  }
+}
+
+function updateContext(it: SchemaObjCxt): void {
+  const schId = it.schema[it.opts.schemaId]
+  if (schId) it.baseId = resolveUrl(it.opts.uriResolver, it.baseId, schId)
+}
+
+function checkAsyncSchema(it: SchemaObjCxt): void {
+  if (it.schema.$async && !it.schemaEnv.$async) throw new Error("async schema in sync schema")
+}
+
+function commentKeyword({gen, schemaEnv, schema, errSchemaPath, opts}: SchemaObjCxt): void {
+  const msg = schema.$comment
+  if (opts.$comment === true) {
+    gen.code(_`${N.self}.logger.log(${msg})`)
+  } else if (typeof opts.$comment == "function") {
+    const schemaPath = str`${errSchemaPath}/$comment`
+    const rootName = gen.scopeValue("root", {ref: schemaEnv.root})
+    gen.code(_`${N.self}.opts.$comment(${msg}, ${schemaPath}, ${rootName}.schema)`)
+  }
+}
+
+function returnResults(it: SchemaCxt): void {
+  const {gen, schemaEnv, validateName, ValidationError, opts} = it
+  if (schemaEnv.$async) {
+    // TODO assign unevaluated
+    gen.if(
+      _`${N.errors} === 0`,
+      () => gen.return(N.data),
+      () => gen.throw(_`new ${ValidationError as Name}(${N.vErrors})`)
+    )
+  } else {
+    gen.assign(_`${validateName}.errors`, N.vErrors)
+    if (opts.unevaluated) assignEvaluated(it)
+    gen.return(_`${N.errors} === 0`)
+  }
+}
+
+function assignEvaluated({gen, evaluated, props, items}: SchemaCxt): void {
+  if (props instanceof Name) gen.assign(_`${evaluated}.props`, props)
+  if (items instanceof Name) gen.assign(_`${evaluated}.items`, items)
+}
+
+function schemaKeywords(
+  it: SchemaObjCxt,
+  types: JSONType[],
+  typeErrors: boolean,
+  errsCount?: Name
+): void {
+  const {gen, schema, data, allErrors, opts, self} = it
+  const {RULES} = self
+  if (schema.$ref && (opts.ignoreKeywordsWithRef || !schemaHasRulesButRef(schema, RULES))) {
+    gen.block(() => keywordCode(it, "$ref", (RULES.all.$ref as Rule).definition)) // TODO typecast
+    return
+  }
+  if (!opts.jtd) checkStrictTypes(it, types)
+  gen.block(() => {
+    for (const group of RULES.rules) groupKeywords(group)
+    groupKeywords(RULES.post)
+  })
+
+  function groupKeywords(group: RuleGroup): void {
+    if (!shouldUseGroup(schema, group)) return
+    if (group.type) {
+      gen.if(checkDataType(group.type, data, opts.strictNumbers))
+      iterateKeywords(it, group)
+      if (types.length === 1 && types[0] === group.type && typeErrors) {
+        gen.else()
+        reportTypeError(it)
+      }
+      gen.endIf()
+    } else {
+      iterateKeywords(it, group)
+    }
+    // TODO make it "ok" call?
+    if (!allErrors) gen.if(_`${N.errors} === ${errsCount || 0}`)
+  }
+}
+
+function iterateKeywords(it: SchemaObjCxt, group: RuleGroup): void {
+  const {
+    gen,
+    schema,
+    opts: {useDefaults},
+  } = it
+  if (useDefaults) assignDefaults(it, group.type)
+  gen.block(() => {
+    for (const rule of group.rules) {
+      if (shouldUseRule(schema, rule)) {
+        keywordCode(it, rule.keyword, rule.definition, group.type)
+      }
+    }
+  })
+}
+
+function checkStrictTypes(it: SchemaObjCxt, types: JSONType[]): void {
+  if (it.schemaEnv.meta || !it.opts.strictTypes) return
+  checkContextTypes(it, types)
+  if (!it.opts.allowUnionTypes) checkMultipleTypes(it, types)
+  checkKeywordTypes(it, it.dataTypes)
+}
+
+function checkContextTypes(it: SchemaObjCxt, types: JSONType[]): void {
+  if (!types.length) return
+  if (!it.dataTypes.length) {
+    it.dataTypes = types
+    return
+  }
+  types.forEach((t) => {
+    if (!includesType(it.dataTypes, t)) {
+      strictTypesError(it, `type "${t}" not allowed by context "${it.dataTypes.join(",")}"`)
+    }
+  })
+  narrowSchemaTypes(it, types)
+}
+
+function checkMultipleTypes(it: SchemaObjCxt, ts: JSONType[]): void {
+  if (ts.length > 1 && !(ts.length === 2 && ts.includes("null"))) {
+    strictTypesError(it, "use allowUnionTypes to allow union type keyword")
+  }
+}
+
+function checkKeywordTypes(it: SchemaObjCxt, ts: JSONType[]): void {
+  const rules = it.self.RULES.all
+  for (const keyword in rules) {
+    const rule = rules[keyword]
+    if (typeof rule == "object" && shouldUseRule(it.schema, rule)) {
+      const {type} = rule.definition
+      if (type.length && !type.some((t) => hasApplicableType(ts, t))) {
+        strictTypesError(it, `missing type "${type.join(",")}" for keyword "${keyword}"`)
+      }
+    }
+  }
+}
+
+function hasApplicableType(schTs: JSONType[], kwdT: JSONType): boolean {
+  return schTs.includes(kwdT) || (kwdT === "number" && schTs.includes("integer"))
+}
+
+function includesType(ts: JSONType[], t: JSONType): boolean {
+  return ts.includes(t) || (t === "integer" && ts.includes("number"))
+}
+
+function narrowSchemaTypes(it: SchemaObjCxt, withTypes: JSONType[]): void {
+  const ts: JSONType[] = []
+  for (const t of it.dataTypes) {
+    if (includesType(withTypes, t)) ts.push(t)
+    else if (withTypes.includes("integer") && t === "number") ts.push("integer")
+  }
+  it.dataTypes = ts
+}
+
+function strictTypesError(it: SchemaObjCxt, msg: string): void {
+  const schemaPath = it.schemaEnv.baseId + it.errSchemaPath
+  msg += ` at "${schemaPath}" (strictTypes)`
+  checkStrictMode(it, msg, it.opts.strictTypes)
+}
+
+export class KeywordCxt implements KeywordErrorCxt {
+  readonly gen: CodeGen
+  readonly allErrors?: boolean
+  readonly keyword: string
+  readonly data: Name // Name referencing the current level of the data instance
+  readonly $data?: string | false
+  schema: any // keyword value in the schema
+  readonly schemaValue: Code | number | boolean // Code reference to keyword schema value or primitive value
+  readonly schemaCode: Code | number | boolean // Code reference to resolved schema value (different if schema is $data)
+  readonly schemaType: JSONType[] // allowed type(s) of keyword value in the schema
+  readonly parentSchema: AnySchemaObject
+  readonly errsCount?: Name // Name reference to the number of validation errors collected before this keyword,
+  // requires option trackErrors in keyword definition
+  params: KeywordCxtParams // object to pass parameters to error messages from keyword code
+  readonly it: SchemaObjCxt // schema compilation context (schema is guaranteed to be an object, not boolean)
+  readonly def: AddedKeywordDefinition
+
+  constructor(it: SchemaObjCxt, def: AddedKeywordDefinition, keyword: string) {
+    validateKeywordUsage(it, def, keyword)
+    this.gen = it.gen
+    this.allErrors = it.allErrors
+    this.keyword = keyword
+    this.data = it.data
+    this.schema = it.schema[keyword]
+    this.$data = def.$data && it.opts.$data && this.schema && this.schema.$data
+    this.schemaValue = schemaRefOrVal(it, this.schema, keyword, this.$data)
+    this.schemaType = def.schemaType
+    this.parentSchema = it.schema
+    this.params = {}
+    this.it = it
+    this.def = def
+
+    if (this.$data) {
+      this.schemaCode = it.gen.const("vSchema", getData(this.$data, it))
+    } else {
+      this.schemaCode = this.schemaValue
+      if (!validSchemaType(this.schema, def.schemaType, def.allowUndefined)) {
+        throw new Error(`${keyword} value must be ${JSON.stringify(def.schemaType)}`)
+      }
+    }
+
+    if ("code" in def ? def.trackErrors : def.errors !== false) {
+      this.errsCount = it.gen.const("_errs", N.errors)
+    }
+  }
+
+  result(condition: Code, successAction?: () => void, failAction?: () => void): void {
+    this.failResult(not(condition), successAction, failAction)
+  }
+
+  failResult(condition: Code, successAction?: () => void, failAction?: () => void): void {
+    this.gen.if(condition)
+    if (failAction) failAction()
+    else this.error()
+    if (successAction) {
+      this.gen.else()
+      successAction()
+      if (this.allErrors) this.gen.endIf()
+    } else {
+      if (this.allErrors) this.gen.endIf()
+      else this.gen.else()
+    }
+  }
+
+  pass(condition: Code, failAction?: () => void): void {
+    this.failResult(not(condition), undefined, failAction)
+  }
+
+  fail(condition?: Code): void {
+    if (condition === undefined) {
+      this.error()
+      if (!this.allErrors) this.gen.if(false) // this branch will be removed by gen.optimize
+      return
+    }
+    this.gen.if(condition)
+    this.error()
+    if (this.allErrors) this.gen.endIf()
+    else this.gen.else()
+  }
+
+  fail$data(condition: Code): void {
+    if (!this.$data) return this.fail(condition)
+    const {schemaCode} = this
+    this.fail(_`${schemaCode} !== undefined && (${or(this.invalid$data(), condition)})`)
+  }
+
+  error(append?: boolean, errorParams?: KeywordCxtParams, errorPaths?: ErrorPaths): void {
+    if (errorParams) {
+      this.setParams(errorParams)
+      this._error(append, errorPaths)
+      this.setParams({})
+      return
+    }
+    this._error(append, errorPaths)
+  }
+
+  private _error(append?: boolean, errorPaths?: ErrorPaths): void {
+    ;(append ? reportExtraError : reportError)(this, this.def.error, errorPaths)
+  }
+
+  $dataError(): void {
+    reportError(this, this.def.$dataError || keyword$DataError)
+  }
+
+  reset(): void {
+    if (this.errsCount === undefined) throw new Error('add "trackErrors" to keyword definition')
+    resetErrorsCount(this.gen, this.errsCount)
+  }
+
+  ok(cond: Code | boolean): void {
+    if (!this.allErrors) this.gen.if(cond)
+  }
+
+  setParams(obj: KeywordCxtParams, assign?: true): void {
+    if (assign) Object.assign(this.params, obj)
+    else this.params = obj
+  }
+
+  block$data(valid: Name, codeBlock: () => void, $dataValid: Code = nil): void {
+    this.gen.block(() => {
+      this.check$data(valid, $dataValid)
+      codeBlock()
+    })
+  }
+
+  check$data(valid: Name = nil, $dataValid: Code = nil): void {
+    if (!this.$data) return
+    const {gen, schemaCode, schemaType, def} = this
+    gen.if(or(_`${schemaCode} === undefined`, $dataValid))
+    if (valid !== nil) gen.assign(valid, true)
+    if (schemaType.length || def.validateSchema) {
+      gen.elseIf(this.invalid$data())
+      this.$dataError()
+      if (valid !== nil) gen.assign(valid, false)
+    }
+    gen.else()
+  }
+
+  invalid$data(): Code {
+    const {gen, schemaCode, schemaType, def, it} = this
+    return or(wrong$DataType(), invalid$DataSchema())
+
+    function wrong$DataType(): Code {
+      if (schemaType.length) {
+        /* istanbul ignore if */
+        if (!(schemaCode instanceof Name)) throw new Error("ajv implementation error")
+        const st = Array.isArray(schemaType) ? schemaType : [schemaType]
+        return _`${checkDataTypes(st, schemaCode, it.opts.strictNumbers, DataType.Wrong)}`
+      }
+      return nil
+    }
+
+    function invalid$DataSchema(): Code {
+      if (def.validateSchema) {
+        const validateSchemaRef = gen.scopeValue("validate$data", {ref: def.validateSchema}) // TODO value.code for standalone
+        return _`!${validateSchemaRef}(${schemaCode})`
+      }
+      return nil
+    }
+  }
+
+  subschema(appl: SubschemaArgs, valid: Name): SchemaCxt {
+    const subschema = getSubschema(this.it, appl)
+    extendSubschemaData(subschema, this.it, appl)
+    extendSubschemaMode(subschema, appl)
+    const nextContext = {...this.it, ...subschema, items: undefined, props: undefined}
+    subschemaCode(nextContext, valid)
+    return nextContext
+  }
+
+  mergeEvaluated(schemaCxt: SchemaCxt, toName?: typeof Name): void {
+    const {it, gen} = this
+    if (!it.opts.unevaluated) return
+    if (it.props !== true && schemaCxt.props !== undefined) {
+      it.props = mergeEvaluated.props(gen, schemaCxt.props, it.props, toName)
+    }
+    if (it.items !== true && schemaCxt.items !== undefined) {
+      it.items = mergeEvaluated.items(gen, schemaCxt.items, it.items, toName)
+    }
+  }
+
+  mergeValidEvaluated(schemaCxt: SchemaCxt, valid: Name): boolean | void {
+    const {it, gen} = this
+    if (it.opts.unevaluated && (it.props !== true || it.items !== true)) {
+      gen.if(valid, () => this.mergeEvaluated(schemaCxt, Name))
+      return true
+    }
+  }
+}
+
+function keywordCode(
+  it: SchemaObjCxt,
+  keyword: string,
+  def: AddedKeywordDefinition,
+  ruleType?: JSONType
+): void {
+  const cxt = new KeywordCxt(it, def, keyword)
+  if ("code" in def) {
+    def.code(cxt, ruleType)
+  } else if (cxt.$data && def.validate) {
+    funcKeywordCode(cxt, def)
+  } else if ("macro" in def) {
+    macroKeywordCode(cxt, def)
+  } else if (def.compile || def.validate) {
+    funcKeywordCode(cxt, def)
+  }
+}
+
+const JSON_POINTER = /^\/(?:[^~]|~0|~1)*$/
+const RELATIVE_JSON_POINTER = /^([0-9]+)(#|\/(?:[^~]|~0|~1)*)?$/
+export function getData(
+  $data: string,
+  {dataLevel, dataNames, dataPathArr}: SchemaCxt
+): Code | number {
+  let jsonPointer
+  let data: Code
+  if ($data === "") return N.rootData
+  if ($data[0] === "/") {
+    if (!JSON_POINTER.test($data)) throw new Error(`Invalid JSON-pointer: ${$data}`)
+    jsonPointer = $data
+    data = N.rootData
+  } else {
+    const matches = RELATIVE_JSON_POINTER.exec($data)
+    if (!matches) throw new Error(`Invalid JSON-pointer: ${$data}`)
+    const up: number = +matches[1]
+    jsonPointer = matches[2]
+    if (jsonPointer === "#") {
+      if (up >= dataLevel) throw new Error(errorMsg("property/index", up))
+      return dataPathArr[dataLevel - up]
+    }
+    if (up > dataLevel) throw new Error(errorMsg("data", up))
+    data = dataNames[dataLevel - up]
+    if (!jsonPointer) return data
+  }
+
+  let expr = data
+  const segments = jsonPointer.split("/")
+  for (const segment of segments) {
+    if (segment) {
+      data = _`${data}${getProperty(unescapeJsonPointer(segment))}`
+      expr = _`${expr} && ${data}`
+    }
+  }
+  return expr
+
+  function errorMsg(pointerType: string, up: number): string {
+    return `Cannot access ${pointerType} ${up} levels up, current level is ${dataLevel}`
+  }
+}

my-app/node_modules/ajv/lib/compile/validate/keyword.ts

@@ -0,0 +1,171 @@
+import type {KeywordCxt} from "."
+import type {
+  AnySchema,
+  SchemaValidateFunction,
+  AnyValidateFunction,
+  AddedKeywordDefinition,
+  MacroKeywordDefinition,
+  FuncKeywordDefinition,
+} from "../../types"
+import type {SchemaObjCxt} from ".."
+import {_, nil, not, stringify, Code, Name, CodeGen} from "../codegen"
+import N from "../names"
+import type {JSONType} from "../rules"
+import {callValidateCode} from "../../vocabularies/code"
+import {extendErrors} from "../errors"
+
+type KeywordCompilationResult = AnySchema | SchemaValidateFunction | AnyValidateFunction
+
+export function macroKeywordCode(cxt: KeywordCxt, def: MacroKeywordDefinition): void {
+  const {gen, keyword, schema, parentSchema, it} = cxt
+  const macroSchema = def.macro.call(it.self, schema, parentSchema, it)
+  const schemaRef = useKeyword(gen, keyword, macroSchema)
+  if (it.opts.validateSchema !== false) it.self.validateSchema(macroSchema, true)
+
+  const valid = gen.name("valid")
+  cxt.subschema(
+    {
+      schema: macroSchema,
+      schemaPath: nil,
+      errSchemaPath: `${it.errSchemaPath}/${keyword}`,
+      topSchemaRef: schemaRef,
+      compositeRule: true,
+    },
+    valid
+  )
+  cxt.pass(valid, () => cxt.error(true))
+}
+
+export function funcKeywordCode(cxt: KeywordCxt, def: FuncKeywordDefinition): void {
+  const {gen, keyword, schema, parentSchema, $data, it} = cxt
+  checkAsyncKeyword(it, def)
+  const validate =
+    !$data && def.compile ? def.compile.call(it.self, schema, parentSchema, it) : def.validate
+  const validateRef = useKeyword(gen, keyword, validate)
+  const valid = gen.let("valid")
+  cxt.block$data(valid, validateKeyword)
+  cxt.ok(def.valid ?? valid)
+
+  function validateKeyword(): void {
+    if (def.errors === false) {
+      assignValid()
+      if (def.modifying) modifyData(cxt)
+      reportErrs(() => cxt.error())
+    } else {
+      const ruleErrs = def.async ? validateAsync() : validateSync()
+      if (def.modifying) modifyData(cxt)
+      reportErrs(() => addErrs(cxt, ruleErrs))
+    }
+  }
+
+  function validateAsync(): Name {
+    const ruleErrs = gen.let("ruleErrs", null)
+    gen.try(
+      () => assignValid(_`await `),
+      (e) =>
+        gen.assign(valid, false).if(
+          _`${e} instanceof ${it.ValidationError as Name}`,
+          () => gen.assign(ruleErrs, _`${e}.errors`),
+          () => gen.throw(e)
+        )
+    )
+    return ruleErrs
+  }
+
+  function validateSync(): Code {
+    const validateErrs = _`${validateRef}.errors`
+    gen.assign(validateErrs, null)
+    assignValid(nil)
+    return validateErrs
+  }
+
+  function assignValid(_await: Code = def.async ? _`await ` : nil): void {
+    const passCxt = it.opts.passContext ? N.this : N.self
+    const passSchema = !(("compile" in def && !$data) || def.schema === false)
+    gen.assign(
+      valid,
+      _`${_await}${callValidateCode(cxt, validateRef, passCxt, passSchema)}`,
+      def.modifying
+    )
+  }
+
+  function reportErrs(errors: () => void): void {
+    gen.if(not(def.valid ?? valid), errors)
+  }
+}
+
+function modifyData(cxt: KeywordCxt): void {
+  const {gen, data, it} = cxt
+  gen.if(it.parentData, () => gen.assign(data, _`${it.parentData}[${it.parentDataProperty}]`))
+}
+
+function addErrs(cxt: KeywordCxt, errs: Code): void {
+  const {gen} = cxt
+  gen.if(
+    _`Array.isArray(${errs})`,
+    () => {
+      gen
+        .assign(N.vErrors, _`${N.vErrors} === null ? ${errs} : ${N.vErrors}.concat(${errs})`)
+        .assign(N.errors, _`${N.vErrors}.length`)
+      extendErrors(cxt)
+    },
+    () => cxt.error()
+  )
+}
+
+function checkAsyncKeyword({schemaEnv}: SchemaObjCxt, def: FuncKeywordDefinition): void {
+  if (def.async && !schemaEnv.$async) throw new Error("async keyword in sync schema")
+}
+
+function useKeyword(gen: CodeGen, keyword: string, result?: KeywordCompilationResult): Name {
+  if (result === undefined) throw new Error(`keyword "${keyword}" failed to compile`)
+  return gen.scopeValue(
+    "keyword",
+    typeof result == "function" ? {ref: result} : {ref: result, code: stringify(result)}
+  )
+}
+
+export function validSchemaType(
+  schema: unknown,
+  schemaType: JSONType[],
+  allowUndefined = false
+): boolean {
+  // TODO add tests
+  return (
+    !schemaType.length ||
+    schemaType.some((st) =>
+      st === "array"
+        ? Array.isArray(schema)
+        : st === "object"
+        ? schema && typeof schema == "object" && !Array.isArray(schema)
+        : typeof schema == st || (allowUndefined && typeof schema == "undefined")
+    )
+  )
+}
+
+export function validateKeywordUsage(
+  {schema, opts, self, errSchemaPath}: SchemaObjCxt,
+  def: AddedKeywordDefinition,
+  keyword: string
+): void {
+  /* istanbul ignore if */
+  if (Array.isArray(def.keyword) ? !def.keyword.includes(keyword) : def.keyword !== keyword) {
+    throw new Error("ajv implementation error")
+  }
+
+  const deps = def.dependencies
+  if (deps?.some((kwd) => !Object.prototype.hasOwnProperty.call(schema, kwd))) {
+    throw new Error(`parent schema must have dependencies of ${keyword}: ${deps.join(",")}`)
+  }
+
+  if (def.validateSchema) {
+    const valid = def.validateSchema(schema[keyword])
+    if (!valid) {
+      const msg =
+        `keyword "${keyword}" value is invalid at path "${errSchemaPath}": ` +
+        self.errorsText(def.validateSchema.errors)
+      if (opts.validateSchema === "log") self.logger.error(msg)
+      else throw new Error(msg)
+    }
+  }
+}

my-app/node_modules/ajv/lib/compile/validate/subschema.ts

@@ -0,0 +1,135 @@
+import type {AnySchema} from "../../types"
+import type {SchemaObjCxt} from ".."
+import {_, str, getProperty, Code, Name} from "../codegen"
+import {escapeFragment, getErrorPath, Type} from "../util"
+import type {JSONType} from "../rules"
+
+export interface SubschemaContext {
+  // TODO use Optional? align with SchemCxt property types
+  schema: AnySchema
+  schemaPath: Code
+  errSchemaPath: string
+  topSchemaRef?: Code
+  errorPath?: Code
+  dataLevel?: number
+  dataTypes?: JSONType[]
+  data?: Name
+  parentData?: Name
+  parentDataProperty?: Code | number
+  dataNames?: Name[]
+  dataPathArr?: (Code | number)[]
+  propertyName?: Name
+  jtdDiscriminator?: string
+  jtdMetadata?: boolean
+  compositeRule?: true
+  createErrors?: boolean
+  allErrors?: boolean
+}
+
+export type SubschemaArgs = Partial<{
+  keyword: string
+  schemaProp: string | number
+  schema: AnySchema
+  schemaPath: Code
+  errSchemaPath: string
+  topSchemaRef: Code
+  data: Name | Code
+  dataProp: Code | string | number
+  dataTypes: JSONType[]
+  definedProperties: Set<string>
+  propertyName: Name
+  dataPropType: Type
+  jtdDiscriminator: string
+  jtdMetadata: boolean
+  compositeRule: true
+  createErrors: boolean
+  allErrors: boolean
+}>
+
+export function getSubschema(
+  it: SchemaObjCxt,
+  {keyword, schemaProp, schema, schemaPath, errSchemaPath, topSchemaRef}: SubschemaArgs
+): SubschemaContext {
+  if (keyword !== undefined && schema !== undefined) {
+    throw new Error('both "keyword" and "schema" passed, only one allowed')
+  }
+
+  if (keyword !== undefined) {
+    const sch = it.schema[keyword]
+    return schemaProp === undefined
+      ? {
+          schema: sch,
+          schemaPath: _`${it.schemaPath}${getProperty(keyword)}`,
+          errSchemaPath: `${it.errSchemaPath}/${keyword}`,
+        }
+      : {
+          schema: sch[schemaProp],
+          schemaPath: _`${it.schemaPath}${getProperty(keyword)}${getProperty(schemaProp)}`,
+          errSchemaPath: `${it.errSchemaPath}/${keyword}/${escapeFragment(schemaProp)}`,
+        }
+  }
+
+  if (schema !== undefined) {
+    if (schemaPath === undefined || errSchemaPath === undefined || topSchemaRef === undefined) {
+      throw new Error('"schemaPath", "errSchemaPath" and "topSchemaRef" are required with "schema"')
+    }
+    return {
+      schema,
+      schemaPath,
+      topSchemaRef,
+      errSchemaPath,
+    }
+  }
+
+  throw new Error('either "keyword" or "schema" must be passed')
+}
+
+export function extendSubschemaData(
+  subschema: SubschemaContext,
+  it: SchemaObjCxt,
+  {dataProp, dataPropType: dpType, data, dataTypes, propertyName}: SubschemaArgs
+): void {
+  if (data !== undefined && dataProp !== undefined) {
+    throw new Error('both "data" and "dataProp" passed, only one allowed')
+  }
+
+  const {gen} = it
+
+  if (dataProp !== undefined) {
+    const {errorPath, dataPathArr, opts} = it
+    const nextData = gen.let("data", _`${it.data}${getProperty(dataProp)}`, true)
+    dataContextProps(nextData)
+    subschema.errorPath = str`${errorPath}${getErrorPath(dataProp, dpType, opts.jsPropertySyntax)}`
+    subschema.parentDataProperty = _`${dataProp}`
+    subschema.dataPathArr = [...dataPathArr, subschema.parentDataProperty]
+  }
+
+  if (data !== undefined) {
+    const nextData = data instanceof Name ? data : gen.let("data", data, true) // replaceable if used once?
+    dataContextProps(nextData)
+    if (propertyName !== undefined) subschema.propertyName = propertyName
+    // TODO something is possibly wrong here with not changing parentDataProperty and not appending dataPathArr
+  }
+
+  if (dataTypes) subschema.dataTypes = dataTypes
+
+  function dataContextProps(_nextData: Name): void {
+    subschema.data = _nextData
+    subschema.dataLevel = it.dataLevel + 1
+    subschema.dataTypes = []
+    it.definedProperties = new Set<string>()
+    subschema.parentData = it.data
+    subschema.dataNames = [...it.dataNames, _nextData]
+  }
+}
+
+export function extendSubschemaMode(
+  subschema: SubschemaContext,
+  {jtdDiscriminator, jtdMetadata, compositeRule, createErrors, allErrors}: SubschemaArgs
+): void {
+  if (compositeRule !== undefined) subschema.compositeRule = compositeRule
+  if (createErrors !== undefined) subschema.createErrors = createErrors
+  if (allErrors !== undefined) subschema.allErrors = allErrors
+  subschema.jtdDiscriminator = jtdDiscriminator // not inherited
+  subschema.jtdMetadata = jtdMetadata // not inherited
+}