webpack/lib/validateSchema.js

Packs CommonJs/AMD modules for the browser. Allows to split your codebase into multiple bundles, which can be loaded on demand. Support loaders to preprocess files, i.e. json, jsx, es7, css, less, ... and your custom stuff.

/*
	MIT License http://www.opensource.org/licenses/mit-license.php
	Author Gajus Kuizinas @gajus
*/
"use strict";

const Ajv = require("ajv");
const ajv = new Ajv({
	errorDataPath: "configuration",
	allErrors: true,
	verbose: true
});
require("ajv-keywords")(ajv, ["instanceof"]);
require("../schemas/ajv.absolutePath")(ajv);

const validateSchema = (schema, options) => {
	if (Array.isArray(options)) {
		const errors = options.map(options => validateObject(schema, options));
		errors.forEach((list, idx) => {
			const applyPrefix = err => {
				err.dataPath = `[${idx}]${err.dataPath}`;
				if (err.children) {
					err.children.forEach(applyPrefix);
				}
			};
			list.forEach(applyPrefix);
		});
		return errors.reduce((arr, items) => {
			return arr.concat(items);
		}, []);
	} else {
		return validateObject(schema, options);
	}
};

const validateObject = (schema, options) => {
	const validate = ajv.compile(schema);
	const valid = validate(options);
	return valid ? [] : filterErrors(validate.errors);
};

const filterErrors = errors => {
	let newErrors = [];
	for (const err of errors) {
		const dataPath = err.dataPath;
		let children = [];
		newErrors = newErrors.filter(oldError => {
			if (oldError.dataPath.includes(dataPath)) {
				if (oldError.children) {
					children = children.concat(oldError.children.slice(0));
				}
				oldError.children = undefined;
				children.push(oldError);
				return false;
			}
			return true;
		});
		if (children.length) {
			err.children = children;
		}
		newErrors.push(err);
	}

	return newErrors;
};

module.exports = validateSchema;