70 lines
1.9 KiB
JavaScript
70 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 */
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @typedef {GenerateContext} Context
|
||
|
|
*/
|
||
|
|
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(other.promises);
|
||
|
|
for (const p of this.promises) {
|
||
|
|
promises.add(p);
|
||
|
|
}
|
||
|
|
return new AwaitDependenciesInitFragment(promises);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @param {Context} context context
|
||
|
|
* @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;
|