Error: strict mode: unknown keyword: "errorMessage" about ajv

[epoberezkin]

it's a custom keyword defined in ajv-errors package

[arlan85]

I'm getting this same issue, how to solve this?

[ThamalDilanka]

@arlan85 'errorMessage' is a custom keyword introduced with the ajv-errors package. You can simply add it to your AJV instance as follows. Ensure to include the option allErrors: true to enable its functionality.

import Ajv from 'ajv';
import AjvErrors from 'ajv-errors';

// Ajv option allErrors must be true
const ajv = new Ajv({
  allErrors: true,
});

// This method call extends your JSON schema to utilize AJV Errors
AjvErrors(ajv);