/*
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("../../declarations/WebpackOptions").CssGeneratorExportsConvention} CssGeneratorExportsConvention */
/** @typedef {import("../../declarations/WebpackOptions").CssGeneratorLocalIdentName} CssGeneratorLocalIdentName */
/** @typedef {import("../Dependency")} Dependency */
/** @typedef {import("../DependencyTemplate").CssDependencyTemplateContext} DependencyTemplateContext */
/** @typedef {import("../DependencyTemplate").CssExportsData} CssExportsData */
/** @typedef {import("../Generator").GenerateContext} GenerateContext */
/** @typedef {import("../Generator").UpdateHashContext} UpdateHashContext */
/** @typedef {import("../Module").ConcatenationBailoutReasonContext} ConcatenationBailoutReasonContext */
/** @typedef {import("../NormalModule")} NormalModule */
/** @typedef {import("../util/Hash")} Hash */
/**
* @template T
* @typedef {import("../InitFragment")<T>} InitFragment
*/
const TYPES = new Set(["javascript"]);
class CssExportsGenerator extends Generator {
/**
* @param {CssGeneratorExportsConvention | undefined} convention the convention of the exports name
* @param {CssGeneratorLocalIdentName | undefined} localIdentName css export local ident name
* @param {boolean} esModule whether to use ES modules syntax
*/
constructor(convention, localIdentName, esModule) {
super();
/** @type {CssGeneratorExportsConvention | undefined} */
this.convention = convention;
/** @type {CssGeneratorLocalIdentName | undefined} */
this.localIdentName = localIdentName;
/** @type {boolean} */
this.esModule = esModule;
}
/**
* @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) {
if (!this.esModule) {
return "Module is not an ECMAScript module";
}
// TODO webpack 6: remove /\[moduleid\]/.test
if (
/\[id\]/.test(this.localIdentName) ||
/\[moduleid\]/.test(this.localIdentName)
) {
return "The localIdentName includes moduleId ([id] or [moduleid])";
}
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(""));
/** @type {InitFragment<TODO>[]} */
const initFragments = [];
/** @type {CssExportsData} */
const cssExportsData = {
esModule: this.esModule,
exports: new Map()
};
generateContext.runtimeRequirements.add(RuntimeGlobals.module);
let chunkInitFragments;
const runtimeRequirements = new Set();
/** @type {DependencyTemplateContext} */
const templateContext = {
runtimeTemplate: generateContext.runtimeTemplate,
dependencyTemplates: generateContext.dependencyTemplates,
moduleGraph: generateContext.moduleGraph,
chunkGraph: generateContext.chunkGraph,
module,
runtime: generateContext.runtime,
runtimeRequirements,
concatenationScope: generateContext.concatenationScope,
codeGenerationResults: generateContext.codeGenerationResults,
initFragments,
cssExportsData,
get chunkInitFragments() {
if (!chunkInitFragments) {
const data = generateContext.getData();
chunkInitFragments = data.get("chunkInitFragments");
if (!chunkInitFragments) {
chunkInitFragments = [];
data.set("chunkInitFragments", chunkInitFragments);
}
}
return chunkInitFragments;
}
};
/**
* @param {Dependency} dependency the dependency
*/
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: ${dependency.constructor.name}`
);
}
template.apply(dependency, source, templateContext);
};
for (const dependency of module.dependencies) {
handleDependency(dependency);
}
if (generateContext.concatenationScope) {
const source = new ConcatSource();
const usedIdentifiers = new Set();
for (const [name, v] of cssExportsData.exports) {
let identifier = Template.toIdentifier(name);
const i = 0;
while (usedIdentifiers.has(identifier)) {
identifier = Template.toIdentifier(name + i);
}
usedIdentifiers.add(identifier);
generateContext.concatenationScope.registerExport(name, identifier);
source.add(
`${
generateContext.runtimeTemplate.supportsConst() ? "const" : "var"
} ${identifier} = ${JSON.stringify(v)};\n`
);
}
return source;
}
const needNsObj =
this.esModule &&
generateContext.moduleGraph
.getExportsInfo(module)
.otherExportsInfo.getUsed(generateContext.runtime) !==
UsageState.Unused;
if (needNsObj) {
generateContext.runtimeRequirements.add(
RuntimeGlobals.makeNamespaceObject
);
}
const exports = [];
for (const [name, v] of cssExportsData.exports) {
exports.push(`\t${JSON.stringify(name)}: ${JSON.stringify(v)}`);
}
return new RawSource(
`${needNsObj ? `${RuntimeGlobals.makeNamespaceObject}(` : ""}${
module.moduleArgument
}.exports = {\n${exports.join(",\n")}\n}${needNsObj ? ")" : ""};`
);
}
/**
* @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 }) {
hash.update(this.esModule.toString());
}
}
module.exports = CssExportsGenerator;