webpack/lib/errors/AnalyzableBailoutsWarning.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 WebpackError = require("./WebpackError");

/**
 * @typedef {object} BailoutDetails
 * @property {string} reason what keeps the runtime form, as the code generation recorded it
 * @property {string[]} modules the modules it was recorded on, as many as are printed
 * @property {number} count how many modules it was recorded on in all
 */

class AnalyzableBailoutsWarning extends WebpackError {
	/**
	 * Creates an instance of AnalyzableBailoutsWarning.
	 * @param {BailoutDetails[]} bailouts the reasons found, the most frequent first
	 * @param {number} references how many module and reason pairs there are
	 */
	constructor(bailouts, references) {
		const list = bailouts
			.map((it) => {
				const more = it.count - it.modules.length;
				const names = `${it.modules.join(", ")}${more > 0 ? `, and ${more} more` : ""}`;
				return `\n  ${it.reason}\n    ${names}`;
			})
			.join("");

		super(
			`analyzable ESM output: ${references} ${references === 1 ? "reference keeps" : "references keep"} the runtime form:${list}\nA bundler reading this output cannot follow such a reference without running webpack's runtime. Each reason names the setting that keeps it; changing that setting lets the reference be written as a literal import() or new URL().\nFor more info visit https://webpack.js.org/configuration/output/#outputmodule`
		);

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

module.exports = AnalyzableBailoutsWarning;