webpack/lib/container/ModuleFederationPlugin.js

102 lines
2.6 KiB
JavaScript

/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra and Zackary Jackson @ScriptedAlchemy
*/
"use strict";
const validateOptions = require("schema-utils");
const schema = require("../../schemas/plugins/container/ModuleFederationPlugin.json");
const ContainerPlugin = require("./ContainerPlugin");
const ContainerReferencePlugin = require("./ContainerReferencePlugin");
/** @typedef {import("../../declarations/plugins/container/ModuleFederationPlugin").ModuleFederationPluginOptions} ModuleFederationPluginOptions */
/** @typedef {import("../../declarations/plugins/container/ModuleFederationPlugin").Shared} Shared */
/** @typedef {import("../Compiler")} Compiler */
/**
* @template T
* @template O
* @param {T[] | O} a first
* @param {T[] | O} b second
* @returns {(T | O)[] | O} merged
*/
const merge = (a, b) => {
if (!b) return a;
if (!a) return b;
if (Array.isArray(a)) {
if (Array.isArray(b)) {
return [...a, ...b];
} else {
return [...a, b];
}
} else {
if (Array.isArray(b)) {
return [a, ...b];
} else {
return [a, b];
}
}
};
class ModuleFederationPlugin {
/**
* @param {ModuleFederationPluginOptions} options options
*/
constructor(options) {
validateOptions(schema, options, { name: "Module Federation Plugin" });
this._options = options;
}
/**
* Apply the plugin
* @param {Compiler} compiler the compiler instance
* @returns {void}
*/
apply(compiler) {
const { _options: options } = this;
if (
options.library &&
!compiler.options.output.enabledLibraryTypes.includes(
options.library.type
)
) {
compiler.options.output.enabledLibraryTypes.push(options.library.type);
}
compiler.hooks.afterPlugins.tap("ModuleFederationPlugin", () => {
if (
options.exposes &&
(Array.isArray(options.exposes)
? options.exposes.length > 0
: Object.keys(options.exposes).length > 0)
) {
new ContainerPlugin({
name: options.name,
library: options.library || compiler.options.output.library,
filename: options.filename,
exposes: options.exposes,
overridables: merge(options.shared, options.overridables)
}).apply(compiler);
}
if (
options.remotes &&
(Array.isArray(options.remotes)
? options.remotes.length > 0
: Object.keys(options.remotes).length > 0)
) {
new ContainerReferencePlugin({
remoteType:
options.remoteType ||
(options.library && options.library.type) ||
compiler.options.externalsType,
remotes: options.remotes,
overrides: merge(options.shared, options.overrides)
}).apply(compiler);
}
});
}
}
module.exports = ModuleFederationPlugin;