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allow to generate only exports for css in node
add more options to the DeterministicModuleIdsPlugin to allow to opt-in into a fixed mode optimize module iterations for module id assignment
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,145 @@ | ||
| /* | ||
| MIT License http://www.opensource.org/licenses/mit-license.php | ||
| Author Sergey Melyukov @smelukov | ||
| */ | ||
|
|
||
| "use strict"; | ||
|
|
||
| const { ReplaceSource, RawSource, ConcatSource } = require("webpack-sources"); | ||
| const { UsageState } = require("../ExportsInfo"); | ||
| const Generator = require("../Generator"); | ||
| const RuntimeGlobals = require("../RuntimeGlobals"); | ||
| const Template = require("../Template"); | ||
|
|
||
| /** @typedef {import("webpack-sources").Source} Source */ | ||
| /** @typedef {import("../Dependency")} Dependency */ | ||
| /** @typedef {import("../Generator").GenerateContext} GenerateContext */ | ||
| /** @typedef {import("../Generator").UpdateHashContext} UpdateHashContext */ | ||
| /** @typedef {import("../Module").ConcatenationBailoutReasonContext} ConcatenationBailoutReasonContext */ | ||
| /** @typedef {import("../NormalModule")} NormalModule */ | ||
| /** @typedef {import("../util/Hash")} Hash */ | ||
|
|
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| const TYPES = new Set(["javascript"]); | ||
|
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| class CssExportsGenerator extends Generator { | ||
| constructor() { | ||
| super(); | ||
| } | ||
|
|
||
| /** | ||
| * @param {NormalModule} module module for which the bailout reason should be determined | ||
| * @param {ConcatenationBailoutReasonContext} context context | ||
| * @returns {string | undefined} reason why this module can't be concatenated, undefined when it can be concatenated | ||
| */ | ||
| getConcatenationBailoutReason(module, context) { | ||
| return undefined; | ||
| } | ||
|
|
||
| /** | ||
| * @param {NormalModule} module module for which the code should be generated | ||
| * @param {GenerateContext} generateContext context for generate | ||
| * @returns {Source} generated code | ||
| */ | ||
| generate(module, generateContext) { | ||
| const source = new ReplaceSource(new RawSource("")); | ||
| const initFragments = []; | ||
| const cssExports = new Map(); | ||
|
|
||
| generateContext.runtimeRequirements.add(RuntimeGlobals.module); | ||
|
|
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| const runtimeRequirements = new Set(); | ||
|
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| const templateContext = { | ||
| runtimeTemplate: generateContext.runtimeTemplate, | ||
| dependencyTemplates: generateContext.dependencyTemplates, | ||
| moduleGraph: generateContext.moduleGraph, | ||
| chunkGraph: generateContext.chunkGraph, | ||
| module, | ||
| runtime: generateContext.runtime, | ||
| runtimeRequirements: runtimeRequirements, | ||
| concatenationScope: generateContext.concatenationScope, | ||
| codeGenerationResults: generateContext.codeGenerationResults, | ||
| initFragments, | ||
| cssExports | ||
| }; | ||
|
|
||
| const handleDependency = dependency => { | ||
| const constructor = /** @type {new (...args: any[]) => Dependency} */ ( | ||
| dependency.constructor | ||
| ); | ||
| const template = generateContext.dependencyTemplates.get(constructor); | ||
| if (!template) { | ||
| throw new Error( | ||
| "No template for dependency: " + dependency.constructor.name | ||
| ); | ||
| } | ||
|
|
||
| template.apply(dependency, source, templateContext); | ||
| }; | ||
| module.dependencies.forEach(handleDependency); | ||
|
|
||
| if (generateContext.concatenationScope) { | ||
| const source = new ConcatSource(); | ||
| const usedIdentifiers = new Set(); | ||
| for (const [k, v] of cssExports) { | ||
| let identifier = Template.toIdentifier(k); | ||
| let i = 0; | ||
| while (usedIdentifiers.has(identifier)) { | ||
| identifier = Template.toIdentifier(k + i); | ||
| } | ||
| usedIdentifiers.add(identifier); | ||
| generateContext.concatenationScope.registerExport(k, identifier); | ||
| source.add( | ||
| `${ | ||
| generateContext.runtimeTemplate.supportsConst ? "const" : "var" | ||
| } ${identifier} = ${JSON.stringify(v)};\n` | ||
| ); | ||
| } | ||
| return source; | ||
| } else { | ||
| const otherUsed = | ||
| generateContext.moduleGraph | ||
| .getExportsInfo(module) | ||
| .otherExportsInfo.getUsed(generateContext.runtime) !== | ||
| UsageState.Unused; | ||
| if (otherUsed) { | ||
| generateContext.runtimeRequirements.add( | ||
| RuntimeGlobals.makeNamespaceObject | ||
| ); | ||
| } | ||
| return new RawSource( | ||
| `${otherUsed ? `${RuntimeGlobals.makeNamespaceObject}(` : ""}${ | ||
| module.moduleArgument | ||
| }.exports = {\n${Array.from( | ||
| cssExports, | ||
| ([k, v]) => `\t${JSON.stringify(k)}: ${JSON.stringify(v)}` | ||
| ).join(",\n")}\n}${otherUsed ? ")" : ""};` | ||
| ); | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * @param {NormalModule} module fresh module | ||
| * @returns {Set<string>} available types (do not mutate) | ||
| */ | ||
| getTypes(module) { | ||
| return TYPES; | ||
| } | ||
|
|
||
| /** | ||
| * @param {NormalModule} module the module | ||
| * @param {string=} type source type | ||
| * @returns {number} estimate size of the module | ||
| */ | ||
| getSize(module, type) { | ||
| return 42; | ||
| } | ||
|
|
||
| /** | ||
| * @param {Hash} hash hash that will be modified | ||
| * @param {UpdateHashContext} updateHashContext context for updating hash | ||
| */ | ||
| updateHash(hash, { module }) {} | ||
| } | ||
|
|
||
| module.exports = CssExportsGenerator; |
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