data-to-jsonschema-to-ts/dist/validator/index.js

Convert plain javascript objects to JSON Schema and TypeScript typings

import { Ajv } from "ajv";
const ajv = new Ajv({ allErrors: true });
/**
 * Compile a JSON Schema into a reusable validator function.
 *
 * The returned validator runs the data against the schema and reports
 * **all** failing constraints (not just the first). Compilation happens
 * once per call to this function; reuse the returned validator to avoid
 * recompiling.
 *
 * @param schema - JSON Schema to validate against.
 * @returns A function `(data) => { valid, errors? }`. `errors` is `undefined` on success.
 */
export function createJsonSchemaValidator(schema) {
    const validate = ajv.compile(schema);
    return function validator(data) {
        const valid = validate(data);
        return {
            valid,
            errors: valid ? undefined : validate.errors,
        };
    };
}
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