mirror of https://github.com/webpack/webpack.git
69 lines
1.8 KiB
JavaScript
69 lines
1.8 KiB
JavaScript
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Florent Cailhol @ooflorent
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*/
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"use strict";
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/** @typedef {import("../Module")} Module */
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/** @typedef {() => Module} ModuleCallback */
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class DependencyReference {
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// module must be dynamic, you must pass a function returning a module
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// The point is that the `module` in Dependency could be replaced i. e. because of Scope Hoisting
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/**
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*
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* @param {ModuleCallback} moduleCallback a callback to get the referenced module
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* @param {(string | string[])[] | boolean} importedNames imported named from the module
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* @param {boolean=} weak if this is a weak reference
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* @param {number} order the order information or NaN if don't care
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*/
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constructor(moduleCallback, importedNames, weak = false, order = NaN) {
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this.moduleCallback = moduleCallback;
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// true: full object
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// false: only sideeffects/no export
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// array of strings: the exports with this names
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this.importedNames = importedNames;
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this.weak = !!weak;
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this.order = order;
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}
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/**
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* @param {DependencyReference[]} array an array (will be modified)
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* @returns {DependencyReference[]} the array again
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*/
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static sort(array) {
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/** @type {WeakMap<DependencyReference, number>} */
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const originalOrder = new WeakMap();
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let i = 0;
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for (const ref of array) {
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originalOrder.set(ref, i++);
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}
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return array.sort((a, b) => {
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const aOrder = a.order;
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const bOrder = b.order;
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if (isNaN(aOrder)) {
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if (!isNaN(bOrder)) {
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return 1;
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}
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} else {
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if (isNaN(bOrder)) {
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return -1;
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}
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if (aOrder !== bOrder) {
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return aOrder - bOrder;
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}
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}
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const aOrg = originalOrder.get(a);
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const bOrg = originalOrder.get(b);
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return aOrg - bOrg;
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});
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}
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get module() {
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return this.moduleCallback();
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}
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}
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module.exports = DependencyReference;
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