shift73k/assets_old/node_modules/webpack/lib/async-modules/AwaitDependenciesInitFragment.js

66 lines
1.9 KiB
JavaScript

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