126 lines
3.5 KiB
JavaScript
126 lines
3.5 KiB
JavaScript
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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const { ConcatSource } = require("webpack-sources");
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const Template = require("./Template");
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const JavascriptModulesPlugin = require("./javascript/JavascriptModulesPlugin");
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/** @typedef {import("./Compiler")} Compiler */
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/** @typedef {import("./ModuleTemplate")} ModuleTemplate */
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const joinIterableWithComma = iterable => {
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// This is more performant than Array.from().join(", ")
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// as it doesn't create an array
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let str = "";
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let first = true;
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for (const item of iterable) {
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if (first) {
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first = false;
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} else {
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str += ", ";
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}
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str += item;
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}
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return str;
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};
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const printExportsInfoToSource = (source, indent, exportsInfo) => {
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let hasExports = false;
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for (const exportInfo of exportsInfo.orderedExports) {
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source.add(
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Template.toComment(
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`${indent}export ${JSON.stringify(exportInfo.name).slice(
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1,
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-1
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)} [${exportInfo.getProvidedInfo()}] [${exportInfo.getUsedInfo()}] [${exportInfo.getRenameInfo()}]`
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) + "\n"
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);
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if (exportInfo.exportsInfo) {
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printExportsInfoToSource(source, indent + " ", exportInfo.exportsInfo);
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}
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hasExports = true;
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}
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const otherExportsInfo = exportsInfo.otherExportsInfo;
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if (otherExportsInfo.provided !== false || otherExportsInfo.used !== false) {
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const title = hasExports ? "other exports" : "exports";
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source.add(
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Template.toComment(
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`${indent}${title} [${otherExportsInfo.getProvidedInfo()}] [${otherExportsInfo.getUsedInfo()}]`
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) + "\n"
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);
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}
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};
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class ModuleInfoHeaderPlugin {
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/**
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* @param {Compiler} compiler the compiler
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* @returns {void}
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*/
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apply(compiler) {
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compiler.hooks.compilation.tap("ModuleInfoHeaderPlugin", compilation => {
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const hooks = JavascriptModulesPlugin.getCompilationHooks(compilation);
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hooks.renderModulePackage.tap(
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"ModuleInfoHeaderPlugin",
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(
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moduleSource,
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module,
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{ chunkGraph, moduleGraph, runtimeTemplate }
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) => {
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const source = new ConcatSource();
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const req = module.readableIdentifier(
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runtimeTemplate.requestShortener
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);
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const reqStr = req.replace(/\*\//g, "*_/");
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const reqStrStar = "*".repeat(reqStr.length);
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source.add("/*!****" + reqStrStar + "****!*\\\n");
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source.add(" !*** " + reqStr + " ***!\n");
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source.add(" \\****" + reqStrStar + "****/\n");
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const exportsType = module.buildMeta.exportsType;
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source.add(
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Template.toComment(
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exportsType
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? `${exportsType} exports`
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: "unknown exports (runtime-defined)"
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) + "\n"
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);
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const exportsInfo = moduleGraph.getExportsInfo(module);
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printExportsInfoToSource(source, "", exportsInfo);
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source.add(
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Template.toComment(
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`runtime requirements: ${joinIterableWithComma(
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chunkGraph.getModuleRuntimeRequirements(module)
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)}`
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) + "\n"
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);
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const optimizationBailout = moduleGraph.getOptimizationBailout(
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module
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);
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if (optimizationBailout) {
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for (const text of optimizationBailout) {
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let code;
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if (typeof text === "function") {
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code = text(runtimeTemplate.requestShortener);
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} else {
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code = text;
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}
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source.add(Template.toComment(`${code}`) + "\n");
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}
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}
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source.add(moduleSource);
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return source;
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}
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);
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hooks.chunkHash.tap("ModuleInfoHeaderPlugin", (chunk, hash) => {
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hash.update("ModuleInfoHeaderPlugin");
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hash.update("1");
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});
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});
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}
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}
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module.exports = ModuleInfoHeaderPlugin;
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