planning

node_modules/ajv-keywords/src/definitions/patternRequired.ts

@@ -0,0 +1,46 @@
+import type {CodeKeywordDefinition, KeywordCxt, KeywordErrorDefinition, ErrorObject} from "ajv"
+import {_, str, and} from "ajv/dist/compile/codegen"
+import {usePattern} from "./_util"
+
+export type PatternRequiredError = ErrorObject<"patternRequired", {missingPattern: string}>
+
+const error: KeywordErrorDefinition = {
+  message: ({params: {missingPattern}}) =>
+    str`should have property matching pattern '${missingPattern}'`,
+  params: ({params: {missingPattern}}) => _`{missingPattern: ${missingPattern}}`,
+}
+
+export default function getDef(): CodeKeywordDefinition {
+  return {
+    keyword: "patternRequired",
+    type: "object",
+    schemaType: "array",
+    error,
+    code(cxt: KeywordCxt) {
+      const {gen, schema, data} = cxt
+      if (schema.length === 0) return
+      const valid = gen.let("valid", true)
+      for (const pat of schema) validateProperties(pat)
+
+      function validateProperties(pattern: string): void {
+        const matched = gen.let("matched", false)
+
+        gen.forIn("key", data, (key) => {
+          gen.assign(matched, _`${usePattern(cxt, pattern)}.test(${key})`)
+          gen.if(matched, () => gen.break())
+        })
+
+        cxt.setParams({missingPattern: pattern})
+        gen.assign(valid, and(valid, matched))
+        cxt.pass(valid)
+      }
+    },
+    metaSchema: {
+      type: "array",
+      items: {type: "string", format: "regex"},
+      uniqueItems: true,
+    },
+  }
+}
+
+module.exports = getDef