419 lines
12 KiB
JavaScript
419 lines
12 KiB
JavaScript
/*
|
|
MIT License http://www.opensource.org/licenses/mit-license.php
|
|
Author Tobias Koppers @sokra
|
|
*/
|
|
|
|
"use strict";
|
|
|
|
const { RawSource } = require("webpack-sources");
|
|
const AsyncDependenciesBlock = require("../AsyncDependenciesBlock");
|
|
const Dependency = require("../Dependency");
|
|
const Module = require("../Module");
|
|
const ModuleFactory = require("../ModuleFactory");
|
|
const RuntimeGlobals = require("../RuntimeGlobals");
|
|
const Template = require("../Template");
|
|
const CommonJsRequireDependency = require("../dependencies/CommonJsRequireDependency");
|
|
const { registerNotSerializable } = require("../util/serialization");
|
|
|
|
/** @typedef {import("../../declarations/WebpackOptions")} WebpackOptions */
|
|
/** @typedef {import("../Compilation")} Compilation */
|
|
/** @typedef {import("../Compiler")} Compiler */
|
|
/** @typedef {import("../Dependency").UpdateHashContext} UpdateHashContext */
|
|
/** @typedef {import("../Module").BuildMeta} BuildMeta */
|
|
/** @typedef {import("../Module").CodeGenerationContext} CodeGenerationContext */
|
|
/** @typedef {import("../Module").CodeGenerationResult} CodeGenerationResult */
|
|
/** @typedef {import("../Module").LibIdentOptions} LibIdentOptions */
|
|
/** @typedef {import("../Module").NeedBuildContext} NeedBuildContext */
|
|
/** @typedef {import("../ModuleFactory").ModuleFactoryCreateData} ModuleFactoryCreateData */
|
|
/** @typedef {import("../ModuleFactory").ModuleFactoryResult} ModuleFactoryResult */
|
|
/** @typedef {import("../RequestShortener")} RequestShortener */
|
|
/** @typedef {import("../ResolverFactory").ResolverWithOptions} ResolverWithOptions */
|
|
/** @typedef {import("../WebpackError")} WebpackError */
|
|
/** @typedef {import("../dependencies/HarmonyImportDependency")} HarmonyImportDependency */
|
|
/** @typedef {import("../util/Hash")} Hash */
|
|
/** @typedef {import("../util/fs").InputFileSystem} InputFileSystem */
|
|
|
|
/**
|
|
* @typedef {Object} BackendApi
|
|
* @property {function(Error=): void} dispose
|
|
* @property {function(Module): { client: string, data: string, active: boolean }} module
|
|
*/
|
|
|
|
const HMR_DEPENDENCY_TYPES = new Set([
|
|
"import.meta.webpackHot.accept",
|
|
"import.meta.webpackHot.decline",
|
|
"module.hot.accept",
|
|
"module.hot.decline"
|
|
]);
|
|
|
|
/**
|
|
* @param {undefined|string|RegExp|Function} test test option
|
|
* @param {Module} module the module
|
|
* @returns {boolean} true, if the module should be selected
|
|
*/
|
|
const checkTest = (test, module) => {
|
|
if (test === undefined) return true;
|
|
if (typeof test === "function") {
|
|
return test(module);
|
|
}
|
|
if (typeof test === "string") {
|
|
const name = module.nameForCondition();
|
|
return name && name.startsWith(test);
|
|
}
|
|
if (test instanceof RegExp) {
|
|
const name = module.nameForCondition();
|
|
return name && test.test(name);
|
|
}
|
|
return false;
|
|
};
|
|
|
|
const TYPES = new Set(["javascript"]);
|
|
|
|
class LazyCompilationDependency extends Dependency {
|
|
constructor(proxyModule) {
|
|
super();
|
|
this.proxyModule = proxyModule;
|
|
}
|
|
|
|
get category() {
|
|
return "esm";
|
|
}
|
|
|
|
get type() {
|
|
return "lazy import()";
|
|
}
|
|
|
|
/**
|
|
* @returns {string | null} an identifier to merge equal requests
|
|
*/
|
|
getResourceIdentifier() {
|
|
return this.proxyModule.originalModule.identifier();
|
|
}
|
|
}
|
|
|
|
registerNotSerializable(LazyCompilationDependency);
|
|
|
|
class LazyCompilationProxyModule extends Module {
|
|
constructor(context, originalModule, request, client, data, active) {
|
|
super("lazy-compilation-proxy", context, originalModule.layer);
|
|
this.originalModule = originalModule;
|
|
this.request = request;
|
|
this.client = client;
|
|
this.data = data;
|
|
this.active = active;
|
|
}
|
|
|
|
/**
|
|
* @returns {string} a unique identifier of the module
|
|
*/
|
|
identifier() {
|
|
return `lazy-compilation-proxy|${this.originalModule.identifier()}`;
|
|
}
|
|
|
|
/**
|
|
* @param {RequestShortener} requestShortener the request shortener
|
|
* @returns {string} a user readable identifier of the module
|
|
*/
|
|
readableIdentifier(requestShortener) {
|
|
return `lazy-compilation-proxy ${this.originalModule.readableIdentifier(
|
|
requestShortener
|
|
)}`;
|
|
}
|
|
|
|
/**
|
|
* Assuming this module is in the cache. Update the (cached) module with
|
|
* the fresh module from the factory. Usually updates internal references
|
|
* and properties.
|
|
* @param {Module} module fresh module
|
|
* @returns {void}
|
|
*/
|
|
updateCacheModule(module) {
|
|
super.updateCacheModule(module);
|
|
const m = /** @type {LazyCompilationProxyModule} */ (module);
|
|
this.originalModule = m.originalModule;
|
|
this.request = m.request;
|
|
this.client = m.client;
|
|
this.data = m.data;
|
|
this.active = m.active;
|
|
}
|
|
|
|
/**
|
|
* @param {LibIdentOptions} options options
|
|
* @returns {string | null} an identifier for library inclusion
|
|
*/
|
|
libIdent(options) {
|
|
return `${this.originalModule.libIdent(options)}!lazy-compilation-proxy`;
|
|
}
|
|
|
|
/**
|
|
* @param {NeedBuildContext} context context info
|
|
* @param {function((WebpackError | null)=, boolean=): void} callback callback function, returns true, if the module needs a rebuild
|
|
* @returns {void}
|
|
*/
|
|
needBuild(context, callback) {
|
|
callback(null, !this.buildInfo || this.buildInfo.active !== this.active);
|
|
}
|
|
|
|
/**
|
|
* @param {WebpackOptions} options webpack options
|
|
* @param {Compilation} compilation the compilation
|
|
* @param {ResolverWithOptions} resolver the resolver
|
|
* @param {InputFileSystem} fs the file system
|
|
* @param {function(WebpackError=): void} callback callback function
|
|
* @returns {void}
|
|
*/
|
|
build(options, compilation, resolver, fs, callback) {
|
|
this.buildInfo = {
|
|
active: this.active
|
|
};
|
|
/** @type {BuildMeta} */
|
|
this.buildMeta = {};
|
|
this.clearDependenciesAndBlocks();
|
|
const dep = new CommonJsRequireDependency(this.client);
|
|
this.addDependency(dep);
|
|
if (this.active) {
|
|
const dep = new LazyCompilationDependency(this);
|
|
const block = new AsyncDependenciesBlock({});
|
|
block.addDependency(dep);
|
|
this.addBlock(block);
|
|
}
|
|
callback();
|
|
}
|
|
|
|
/**
|
|
* @returns {Set<string>} types available (do not mutate)
|
|
*/
|
|
getSourceTypes() {
|
|
return TYPES;
|
|
}
|
|
|
|
/**
|
|
* @param {string=} type the source type for which the size should be estimated
|
|
* @returns {number} the estimated size of the module (must be non-zero)
|
|
*/
|
|
size(type) {
|
|
return 200;
|
|
}
|
|
|
|
/**
|
|
* @param {CodeGenerationContext} context context for code generation
|
|
* @returns {CodeGenerationResult} result
|
|
*/
|
|
codeGeneration({ runtimeTemplate, chunkGraph, moduleGraph }) {
|
|
const sources = new Map();
|
|
const runtimeRequirements = new Set();
|
|
runtimeRequirements.add(RuntimeGlobals.module);
|
|
const clientDep = /** @type {CommonJsRequireDependency} */ (
|
|
this.dependencies[0]
|
|
);
|
|
const clientModule = moduleGraph.getModule(clientDep);
|
|
const block = this.blocks[0];
|
|
const client = Template.asString([
|
|
`var client = ${runtimeTemplate.moduleExports({
|
|
module: clientModule,
|
|
chunkGraph,
|
|
request: clientDep.userRequest,
|
|
runtimeRequirements
|
|
})}`,
|
|
`var data = ${JSON.stringify(this.data)};`
|
|
]);
|
|
const keepActive = Template.asString([
|
|
`var dispose = client.keepAlive({ data: data, active: ${JSON.stringify(
|
|
!!block
|
|
)}, module: module, onError: onError });`
|
|
]);
|
|
let source;
|
|
if (block) {
|
|
const dep = block.dependencies[0];
|
|
const module = moduleGraph.getModule(dep);
|
|
source = Template.asString([
|
|
client,
|
|
`module.exports = ${runtimeTemplate.moduleNamespacePromise({
|
|
chunkGraph,
|
|
block,
|
|
module,
|
|
request: this.request,
|
|
strict: false, // TODO this should be inherited from the original module
|
|
message: "import()",
|
|
runtimeRequirements
|
|
})};`,
|
|
"if (module.hot) {",
|
|
Template.indent([
|
|
"module.hot.accept();",
|
|
`module.hot.accept(${JSON.stringify(
|
|
chunkGraph.getModuleId(module)
|
|
)}, function() { module.hot.invalidate(); });`,
|
|
"module.hot.dispose(function(data) { delete data.resolveSelf; dispose(data); });",
|
|
"if (module.hot.data && module.hot.data.resolveSelf) module.hot.data.resolveSelf(module.exports);"
|
|
]),
|
|
"}",
|
|
"function onError() { /* ignore */ }",
|
|
keepActive
|
|
]);
|
|
} else {
|
|
source = Template.asString([
|
|
client,
|
|
"var resolveSelf, onError;",
|
|
`module.exports = new Promise(function(resolve, reject) { resolveSelf = resolve; onError = reject; });`,
|
|
"if (module.hot) {",
|
|
Template.indent([
|
|
"module.hot.accept();",
|
|
"if (module.hot.data && module.hot.data.resolveSelf) module.hot.data.resolveSelf(module.exports);",
|
|
"module.hot.dispose(function(data) { data.resolveSelf = resolveSelf; dispose(data); });"
|
|
]),
|
|
"}",
|
|
keepActive
|
|
]);
|
|
}
|
|
sources.set("javascript", new RawSource(source));
|
|
return {
|
|
sources,
|
|
runtimeRequirements
|
|
};
|
|
}
|
|
|
|
/**
|
|
* @param {Hash} hash the hash used to track dependencies
|
|
* @param {UpdateHashContext} context context
|
|
* @returns {void}
|
|
*/
|
|
updateHash(hash, context) {
|
|
super.updateHash(hash, context);
|
|
hash.update(this.active ? "active" : "");
|
|
hash.update(JSON.stringify(this.data));
|
|
}
|
|
}
|
|
|
|
registerNotSerializable(LazyCompilationProxyModule);
|
|
|
|
class LazyCompilationDependencyFactory extends ModuleFactory {
|
|
constructor(factory) {
|
|
super();
|
|
this._factory = factory;
|
|
}
|
|
|
|
/**
|
|
* @param {ModuleFactoryCreateData} data data object
|
|
* @param {function(Error=, ModuleFactoryResult=): void} callback callback
|
|
* @returns {void}
|
|
*/
|
|
create(data, callback) {
|
|
const dependency = /** @type {LazyCompilationDependency} */ (
|
|
data.dependencies[0]
|
|
);
|
|
callback(null, {
|
|
module: dependency.proxyModule.originalModule
|
|
});
|
|
}
|
|
}
|
|
|
|
class LazyCompilationPlugin {
|
|
/**
|
|
* @param {Object} options options
|
|
* @param {(function(Compiler, function(Error?, BackendApi?): void): void) | function(Compiler): Promise<BackendApi>} options.backend the backend
|
|
* @param {boolean} options.entries true, when entries are lazy compiled
|
|
* @param {boolean} options.imports true, when import() modules are lazy compiled
|
|
* @param {RegExp | string | (function(Module): boolean)} options.test additional filter for lazy compiled entrypoint modules
|
|
*/
|
|
constructor({ backend, entries, imports, test }) {
|
|
this.backend = backend;
|
|
this.entries = entries;
|
|
this.imports = imports;
|
|
this.test = test;
|
|
}
|
|
/**
|
|
* Apply the plugin
|
|
* @param {Compiler} compiler the compiler instance
|
|
* @returns {void}
|
|
*/
|
|
apply(compiler) {
|
|
let backend;
|
|
compiler.hooks.beforeCompile.tapAsync(
|
|
"LazyCompilationPlugin",
|
|
(params, callback) => {
|
|
if (backend !== undefined) return callback();
|
|
const promise = this.backend(compiler, (err, result) => {
|
|
if (err) return callback(err);
|
|
backend = result;
|
|
callback();
|
|
});
|
|
if (promise && promise.then) {
|
|
promise.then(b => {
|
|
backend = b;
|
|
callback();
|
|
}, callback);
|
|
}
|
|
}
|
|
);
|
|
compiler.hooks.thisCompilation.tap(
|
|
"LazyCompilationPlugin",
|
|
(compilation, { normalModuleFactory }) => {
|
|
normalModuleFactory.hooks.module.tap(
|
|
"LazyCompilationPlugin",
|
|
(originalModule, createData, resolveData) => {
|
|
if (
|
|
resolveData.dependencies.every(dep =>
|
|
HMR_DEPENDENCY_TYPES.has(dep.type)
|
|
)
|
|
) {
|
|
// for HMR only resolving, try to determine if the HMR accept/decline refers to
|
|
// an import() or not
|
|
const hmrDep = resolveData.dependencies[0];
|
|
const originModule =
|
|
compilation.moduleGraph.getParentModule(hmrDep);
|
|
const isReferringToDynamicImport = originModule.blocks.some(
|
|
block =>
|
|
block.dependencies.some(
|
|
dep =>
|
|
dep.type === "import()" &&
|
|
/** @type {HarmonyImportDependency} */ (dep).request ===
|
|
hmrDep.request
|
|
)
|
|
);
|
|
if (!isReferringToDynamicImport) return;
|
|
} else if (
|
|
!resolveData.dependencies.every(
|
|
dep =>
|
|
HMR_DEPENDENCY_TYPES.has(dep.type) ||
|
|
(this.imports &&
|
|
(dep.type === "import()" ||
|
|
dep.type === "import() context element")) ||
|
|
(this.entries && dep.type === "entry")
|
|
)
|
|
)
|
|
return;
|
|
if (
|
|
/webpack[/\\]hot[/\\]|webpack-dev-server[/\\]client|webpack-hot-middleware[/\\]client/.test(
|
|
resolveData.request
|
|
) ||
|
|
!checkTest(this.test, originalModule)
|
|
)
|
|
return;
|
|
const moduleInfo = backend.module(originalModule);
|
|
if (!moduleInfo) return;
|
|
const { client, data, active } = moduleInfo;
|
|
|
|
return new LazyCompilationProxyModule(
|
|
compiler.context,
|
|
originalModule,
|
|
resolveData.request,
|
|
client,
|
|
data,
|
|
active
|
|
);
|
|
}
|
|
);
|
|
compilation.dependencyFactories.set(
|
|
LazyCompilationDependency,
|
|
new LazyCompilationDependencyFactory()
|
|
);
|
|
}
|
|
);
|
|
compiler.hooks.shutdown.tapAsync("LazyCompilationPlugin", callback => {
|
|
backend.dispose(callback);
|
|
});
|
|
}
|
|
}
|
|
|
|
module.exports = LazyCompilationPlugin;
|