How can I use custom keywords in AJV?

How can I use custom keywords in AJV?

You can define custom keywords in AJV by using the addKeyword method. Would you like a code example?

Yes, please provide a code example.

Sure! Here's a simple example:

const Ajv = require('ajv');
const ajv = new Ajv();

ajv.addKeyword('myCustomKeyword', {
  validate: function (schema, data) {
    return data === schema;
  }
});

const validate = ajv.compile({
  type: 'object',
  properties: {
    myField: { myCustomKeyword: 'expectedValue' }
  }
});

const valid = validate({ myField: 'expectedValue' });
console.log(valid); // true

This code adds a custom keyword that checks if a field matches a specific value.

What are some use cases for custom keywords?

Custom keywords can be used for various purposes, such as implementing complex validation rules, creating reusable validation logic, or integrating with external systems.