/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Sergey Melyukov @smelukov
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*/
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"use strict";
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const { RawSource } = require("webpack-sources");
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const ConcatenationScope = require("../ConcatenationScope");
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const Generator = require("../Generator");
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const {
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NO_TYPES,
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CSS_URL_TYPES,
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JS_TYPES,
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JS_AND_CSS_URL_TYPES
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} = require("../ModuleSourceTypesConstants");
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const RuntimeGlobals = require("../RuntimeGlobals");
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/** @typedef {import("webpack-sources").Source} Source */
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/** @typedef {import("../Generator").GenerateContext} GenerateContext */
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/** @typedef {import("../Module").ConcatenationBailoutReasonContext} ConcatenationBailoutReasonContext */
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/** @typedef {import("../Module").SourceTypes} SourceTypes */
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/** @typedef {import("../ModuleGraph")} ModuleGraph */
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/** @typedef {import("../NormalModule")} NormalModule */
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class AssetSourceGenerator extends Generator {
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/**
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* @param {ModuleGraph} moduleGraph the module graph
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*/
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constructor(moduleGraph) {
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super();
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this._moduleGraph = moduleGraph;
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}
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/**
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* @param {NormalModule} module module for which the code should be generated
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* @param {GenerateContext} generateContext context for generate
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* @returns {Source | null} generated code
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*/
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generate(
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module,
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{ type, concatenationScope, getData, runtimeTemplate, runtimeRequirements }
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) {
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const originalSource = module.originalSource();
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const data = getData ? getData() : undefined;
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switch (type) {
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case "javascript": {
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if (!originalSource) {
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return new RawSource("");
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}
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const content = originalSource.source();
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const encodedSource =
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typeof content === "string" ? content : content.toString("utf-8");
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let sourceContent;
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if (concatenationScope) {
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concatenationScope.registerNamespaceExport(
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ConcatenationScope.NAMESPACE_OBJECT_EXPORT
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);
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sourceContent = `${runtimeTemplate.supportsConst() ? "const" : "var"} ${
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ConcatenationScope.NAMESPACE_OBJECT_EXPORT
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} = ${JSON.stringify(encodedSource)};`;
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} else {
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runtimeRequirements.add(RuntimeGlobals.module);
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sourceContent = `${RuntimeGlobals.module}.exports = ${JSON.stringify(
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encodedSource
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)};`;
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}
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return new RawSource(sourceContent);
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}
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case "css-url": {
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if (!originalSource) {
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return null;
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}
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const content = originalSource.source();
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const encodedSource =
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typeof content === "string" ? content : content.toString("utf-8");
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if (data) {
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data.set("url", { [type]: encodedSource });
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}
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return null;
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}
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default:
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return null;
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}
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}
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/**
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* @param {Error} error the error
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* @param {NormalModule} module module for which the code should be generated
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* @param {GenerateContext} generateContext context for generate
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* @returns {Source | null} generated code
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*/
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generateError(error, module, generateContext) {
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switch (generateContext.type) {
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case "javascript": {
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return new RawSource(
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`throw new Error(${JSON.stringify(error.message)});`
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);
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}
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default:
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return null;
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}
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}
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/**
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* @param {NormalModule} module module for which the bailout reason should be determined
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* @param {ConcatenationBailoutReasonContext} context context
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* @returns {string | undefined} reason why this module can't be concatenated, undefined when it can be concatenated
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*/
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getConcatenationBailoutReason(module, context) {
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return undefined;
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}
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/**
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* @param {NormalModule} module fresh module
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* @returns {SourceTypes} available types (do not mutate)
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*/
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getTypes(module) {
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const sourceTypes = new Set();
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const connections = this._moduleGraph.getIncomingConnections(module);
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for (const connection of connections) {
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if (!connection.originModule) {
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continue;
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}
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sourceTypes.add(connection.originModule.type.split("/")[0]);
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}
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if (sourceTypes.has("javascript") && sourceTypes.has("css")) {
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return JS_AND_CSS_URL_TYPES;
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} else if (sourceTypes.has("javascript")) {
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return JS_TYPES;
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} else if (sourceTypes.has("css")) {
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return CSS_URL_TYPES;
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}
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return NO_TYPES;
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}
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/**
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* @param {NormalModule} module the module
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* @param {string=} type source type
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* @returns {number} estimate size of the module
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*/
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getSize(module, type) {
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const originalSource = module.originalSource();
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if (!originalSource) {
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return 0;
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}
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// Example: m.exports="abcd"
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return originalSource.size() + 12;
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}
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}
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module.exports = AssetSourceGenerator;
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