Updated the files.

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
+  }
+}