webpack/lib/errors/UnsplitVendorsWarning.js

Packs ECMAScript/CommonJs/AMD modules for the browser. Allows you to split your codebase into multiple bundles, which can be loaded on demand. Supports 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 Alexander Akait @alexander-akait
*/

"use strict";

const formatSize = require("../util/formatSize");
const WebpackError = require("./WebpackError");

/**
 * @typedef {object} UnsplitVendorChunkDetails
 * @property {string} name
 * @property {number} vendorModules how many of its modules come from node_modules
 * @property {number} vendorSize bytes those modules contribute
 */

class UnsplitVendorsWarning extends WebpackError {
	/**
	 * Creates an instance of UnsplitVendorsWarning.
	 * @param {UnsplitVendorChunkDetails[]} chunks the worst offenders, largest vendor size first
	 */
	constructor(chunks) {
		const list = chunks
			.map(
				(chunk) =>
					`\n  ${chunk.name} (${chunk.vendorModules} modules from node_modules, ${formatSize(
						chunk.vendorSize
					)})`
			)
			.join("");

		super(
			`unsplit vendors: initial chunks carry node_modules code next to application code:${list}\nThe dependencies then get a new hash on every application change, so returning visitors download them again. 'optimization.splitChunks' can move them into a chunk of their own.\nFor more info visit https://webpack.js.org/plugins/split-chunks-plugin/`
		);

		/** @type {string} */
		this.name = "UnsplitVendorsWarning";
	}
}

module.exports = UnsplitVendorsWarning;