Updated the files.

my-app/node_modules/ajv/lib/vocabularies/applicator/contains.ts

@@ -0,0 +1,109 @@
+import type {
+  CodeKeywordDefinition,
+  KeywordErrorDefinition,
+  ErrorObject,
+  AnySchema,
+} from "../../types"
+import type {KeywordCxt} from "../../compile/validate"
+import {_, str, Name} from "../../compile/codegen"
+import {alwaysValidSchema, checkStrictMode, Type} from "../../compile/util"
+
+export type ContainsError = ErrorObject<
+  "contains",
+  {minContains: number; maxContains?: number},
+  AnySchema
+>
+
+const error: KeywordErrorDefinition = {
+  message: ({params: {min, max}}) =>
+    max === undefined
+      ? str`must contain at least ${min} valid item(s)`
+      : str`must contain at least ${min} and no more than ${max} valid item(s)`,
+  params: ({params: {min, max}}) =>
+    max === undefined ? _`{minContains: ${min}}` : _`{minContains: ${min}, maxContains: ${max}}`,
+}
+
+const def: CodeKeywordDefinition = {
+  keyword: "contains",
+  type: "array",
+  schemaType: ["object", "boolean"],
+  before: "uniqueItems",
+  trackErrors: true,
+  error,
+  code(cxt: KeywordCxt) {
+    const {gen, schema, parentSchema, data, it} = cxt
+    let min: number
+    let max: number | undefined
+    const {minContains, maxContains} = parentSchema
+    if (it.opts.next) {
+      min = minContains === undefined ? 1 : minContains
+      max = maxContains
+    } else {
+      min = 1
+    }
+    const len = gen.const("len", _`${data}.length`)
+    cxt.setParams({min, max})
+    if (max === undefined && min === 0) {
+      checkStrictMode(it, `"minContains" == 0 without "maxContains": "contains" keyword ignored`)
+      return
+    }
+    if (max !== undefined && min > max) {
+      checkStrictMode(it, `"minContains" > "maxContains" is always invalid`)
+      cxt.fail()
+      return
+    }
+    if (alwaysValidSchema(it, schema)) {
+      let cond = _`${len} >= ${min}`
+      if (max !== undefined) cond = _`${cond} && ${len} <= ${max}`
+      cxt.pass(cond)
+      return
+    }
+
+    it.items = true
+    const valid = gen.name("valid")
+    if (max === undefined && min === 1) {
+      validateItems(valid, () => gen.if(valid, () => gen.break()))
+    } else if (min === 0) {
+      gen.let(valid, true)
+      if (max !== undefined) gen.if(_`${data}.length > 0`, validateItemsWithCount)
+    } else {
+      gen.let(valid, false)
+      validateItemsWithCount()
+    }
+    cxt.result(valid, () => cxt.reset())
+
+    function validateItemsWithCount(): void {
+      const schValid = gen.name("_valid")
+      const count = gen.let("count", 0)
+      validateItems(schValid, () => gen.if(schValid, () => checkLimits(count)))
+    }
+
+    function validateItems(_valid: Name, block: () => void): void {
+      gen.forRange("i", 0, len, (i) => {
+        cxt.subschema(
+          {
+            keyword: "contains",
+            dataProp: i,
+            dataPropType: Type.Num,
+            compositeRule: true,
+          },
+          _valid
+        )
+        block()
+      })
+    }
+
+    function checkLimits(count: Name): void {
+      gen.code(_`${count}++`)
+      if (max === undefined) {
+        gen.if(_`${count} >= ${min}`, () => gen.assign(valid, true).break())
+      } else {
+        gen.if(_`${count} > ${max}`, () => gen.assign(valid, false).break())
+        if (min === 1) gen.assign(valid, true)
+        else gen.if(_`${count} >= ${min}`, () => gen.assign(valid, true))
+      }
+    }
+  },
+}
+
+export default def