gree_leran/node_modules/webpack/lib/asset/AssetSourceGenerator.js

97 lines
2.6 KiB
JavaScript
Raw Normal View History

2024-06-14 01:11:29 +00:00
/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Sergey Melyukov @smelukov
*/
"use strict";
const { RawSource } = require("webpack-sources");
const ConcatenationScope = require("../ConcatenationScope");
const Generator = require("../Generator");
const RuntimeGlobals = require("../RuntimeGlobals");
/** @typedef {import("webpack-sources").Source} Source */
/** @typedef {import("../Generator").GenerateContext} GenerateContext */
/** @typedef {import("../Module").ConcatenationBailoutReasonContext} ConcatenationBailoutReasonContext */
/** @typedef {import("../NormalModule")} NormalModule */
const TYPES = new Set(["javascript"]);
class AssetSourceGenerator extends Generator {
/**
* @param {NormalModule} module module for which the code should be generated
* @param {GenerateContext} generateContext context for generate
* @returns {Source} generated code
*/
generate(
module,
{ concatenationScope, chunkGraph, runtimeTemplate, runtimeRequirements }
) {
const originalSource = module.originalSource();
if (!originalSource) {
return new RawSource("");
}
const content = originalSource.source();
let encodedSource;
if (typeof content === "string") {
encodedSource = content;
} else {
encodedSource = content.toString("utf-8");
}
let sourceContent;
if (concatenationScope) {
concatenationScope.registerNamespaceExport(
ConcatenationScope.NAMESPACE_OBJECT_EXPORT
);
sourceContent = `${runtimeTemplate.supportsConst() ? "const" : "var"} ${
ConcatenationScope.NAMESPACE_OBJECT_EXPORT
} = ${JSON.stringify(encodedSource)};`;
} else {
runtimeRequirements.add(RuntimeGlobals.module);
sourceContent = `${RuntimeGlobals.module}.exports = ${JSON.stringify(
encodedSource
)};`;
}
return new RawSource(sourceContent);
}
/**
* @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 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) {
const originalSource = module.originalSource();
if (!originalSource) {
return 0;
}
// Example: m.exports="abcd"
return originalSource.size() + 12;
}
}
module.exports = AssetSourceGenerator;