webpack/lib/errors/ScopeHoistingBailoutsWarning.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 {{ reason: string, count: number, names: string[] }} ScopeHoistingBailoutGroup */

/**
 * @param {ScopeHoistingBailoutGroup} group one reason and what it applied to
 * @returns {string} one printed line
 */
const formatGroup = ({ reason, count, names }) => {
	const shown = names.join(", ");
	const rest = count - names.length;

	return `  ${count} × ${reason}\n     ${shown}${rest > 0 ? ` and ${rest} more` : ""}`;
};

class ScopeHoistingBailoutsWarning extends WebpackError {
	/**
	 * Creates an instance of ScopeHoistingBailoutsWarning.
	 * @param {ScopeHoistingBailoutGroup[]} groups the reasons, most modules first
	 * @param {number} total how many modules were left out
	 */
	constructor(groups, total) {
		super(
			`scope hoisting: ${total} ${total === 1 ? "module was" : "modules were"} not merged into the scope of ${total === 1 ? "its importer" : "their importers"}, so each keeps its own wrapper:
${groups.map(formatGroup).join("\n")}

Concatenation needs a module to be ESM and statically analyzable. For more info visit https://webpack.js.org/plugins/module-concatenation-plugin/`
		);

		this.name = "ScopeHoistingBailoutsWarning";
	}
}

module.exports = ScopeHoistingBailoutsWarning;