json-validate-utils

A lightweight JSON validator for Node.js and browser environments, with support for advanced validation features.

Installation

You can install json-validate-utils via npm:

Usage

json-validate-utils provides a validateJSON method that takes in two parameters:

• actualData - The JSON data that needs to be validated.
• schema - The JSON schema to compare the actualData against.

The method returns an object containing an array of issues found in the actualData, with each issue represented as an object containing the fieldName and message.

Here's an example of how to use validateJSON:

const { validateJSON } = require('json-validate-utils');

const actualData = {
	name: 'John Doe',
	email: '[email protected]',
};

const schema = {
	name: { required: true, type: 'string', min: 2, max: 50 },
	email: {
		required: true,
		type: 'string',
		regex: /^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$/,
	},
	age: { required: false, type: 'number', min: 18, max: 60 },
};

const result = validateJSON(actualData, schema);

if (result.issues.length === 0) {
	console.log('JSON is valid');
} else {
	console.log('JSON is invalid');
	console.log(result.issues);
}

API

validateJSON(actualData, schema)

Validates the actualData against the provided schema.

actualData - The JSON data that needs to be validated.

schema - The JSON schema to compare the actualData against.

Returns an object containing an array of issues found in the actualData, with each issue represented as an object containing the fieldName and message.

Schema Properties

The following properties can be used in the schema object:

required - Indicates whether the field is required or not. Defaults to false.

type - The expected data type of the field. Possible values are string, number, boolean, object, and array.

min - The minimum value of a number field.

max - The maximum value of a number field.

regex - A regular expression that the string field must match.

additionalValuesAllowed - Indicates whether additional keys in the actual data are allowed or not. Defaults to true.

License

MIT