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69 lines
1.9 KiB
69 lines
1.9 KiB
/* |
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MIT License http://www.opensource.org/licenses/mit-license.php |
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Author Tobias Koppers @sokra |
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*/ |
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"use strict"; |
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const InitFragment = require("../InitFragment"); |
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const RuntimeGlobals = require("../RuntimeGlobals"); |
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const Template = require("../Template"); |
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/** @typedef {import("webpack-sources").Source} Source */ |
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/** @typedef {import("../Generator").GenerateContext} GenerateContext */ |
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/** |
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* @typedef {GenerateContext} Context |
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*/ |
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class AwaitDependenciesInitFragment extends InitFragment { |
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/** |
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* @param {Set<string>} promises the promises that should be awaited |
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*/ |
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constructor(promises) { |
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super( |
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undefined, |
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InitFragment.STAGE_ASYNC_DEPENDENCIES, |
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0, |
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"await-dependencies" |
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); |
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this.promises = promises; |
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} |
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merge(other) { |
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const promises = new Set(other.promises); |
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for (const p of this.promises) { |
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promises.add(p); |
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} |
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return new AwaitDependenciesInitFragment(promises); |
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} |
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/** |
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* @param {Context} context context |
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* @returns {string|Source} the source code that will be included as initialization code |
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*/ |
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getContent({ runtimeRequirements }) { |
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runtimeRequirements.add(RuntimeGlobals.module); |
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const promises = this.promises; |
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if (promises.size === 0) { |
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return ""; |
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} |
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if (promises.size === 1) { |
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for (const p of promises) { |
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return Template.asString([ |
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`var __webpack_async_dependencies__ = __webpack_handle_async_dependencies__([${p}]);`, |
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`${p} = (__webpack_async_dependencies__.then ? (await __webpack_async_dependencies__)() : __webpack_async_dependencies__)[0];`, |
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"" |
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]); |
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} |
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} |
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const sepPromises = Array.from(promises).join(", "); |
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// TODO check if destructuring is supported |
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return Template.asString([ |
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`var __webpack_async_dependencies__ = __webpack_handle_async_dependencies__([${sepPromises}]);`, |
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`([${sepPromises}] = __webpack_async_dependencies__.then ? (await __webpack_async_dependencies__)() : __webpack_async_dependencies__);`, |
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"" |
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]); |
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} |
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} |
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module.exports = AwaitDependenciesInitFragment;
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