Method validate

packages/core/src/utils/schemaValidator.ts:22–35

* Returns null if the data confroms to the schema described by schema (or if schema * is null). Otherwise, returns a string describing the error.

(schema: unknown | undefined, data: unknown)

   *  is null). Otherwise, returns a string describing the error.
   */
  static validate(schema: unknown | undefined, data: unknown): string | null {
    if (!schema) {
      return null;
    }
    if (typeof data !== 'object' || data === null) {
      return 'Value of params must be an object';
    }
    const validate = ajValidator.compile(schema);
    const valid = validate(data);
    if (!valid && validate.errors) {
      return ajValidator.errorsText(validate.errors, { dataVar: 'params' });
    }
    return null;
  }
}