source: trip-planner-front/node_modules/webpack/lib/node/RequireChunkLoadingRuntimeModule.js@ 8d391a1

/*
        MIT License http://www.opensource.org/licenses/mit-license.php
*/

"use strict";

const RuntimeGlobals = require("../RuntimeGlobals");
const RuntimeModule = require("../RuntimeModule");
const Template = require("../Template");
const {
        chunkHasJs,
        getChunkFilenameTemplate
} = require("../javascript/JavascriptModulesPlugin");
const { getInitialChunkIds } = require("../javascript/StartupHelpers");
const compileBooleanMatcher = require("../util/compileBooleanMatcher");
const { getUndoPath } = require("../util/identifier");

class RequireChunkLoadingRuntimeModule extends RuntimeModule {
        constructor(runtimeRequirements) {
                super("require chunk loading", RuntimeModule.STAGE_ATTACH);
                this.runtimeRequirements = runtimeRequirements;
        }

        /**
         * @returns {string} runtime code
         */
        generate() {
                const { chunkGraph, chunk } = this;
                const { runtimeTemplate } = this.compilation;
                const fn = RuntimeGlobals.ensureChunkHandlers;
                const withBaseURI = this.runtimeRequirements.has(RuntimeGlobals.baseURI);
                const withExternalInstallChunk = this.runtimeRequirements.has(
                        RuntimeGlobals.externalInstallChunk
                );
                const withOnChunkLoad = this.runtimeRequirements.has(
                        RuntimeGlobals.onChunksLoaded
                );
                const withLoading = this.runtimeRequirements.has(
                        RuntimeGlobals.ensureChunkHandlers
                );
                const withHmr = this.runtimeRequirements.has(
                        RuntimeGlobals.hmrDownloadUpdateHandlers
                );
                const withHmrManifest = this.runtimeRequirements.has(
                        RuntimeGlobals.hmrDownloadManifest
                );
                const conditionMap = chunkGraph.getChunkConditionMap(chunk, chunkHasJs);
                const hasJsMatcher = compileBooleanMatcher(conditionMap);
                const initialChunkIds = getInitialChunkIds(chunk, chunkGraph);

                const outputName = this.compilation.getPath(
                        getChunkFilenameTemplate(chunk, this.compilation.outputOptions),
                        {
                                chunk,
                                contentHashType: "javascript"
                        }
                );
                const rootOutputDir = getUndoPath(
                        outputName,
                        this.compilation.outputOptions.path,
                        true
                );

                return Template.asString([
                        withBaseURI
                                ? Template.asString([
                                                `${RuntimeGlobals.baseURI} = require("url").pathToFileURL(${
                                                        rootOutputDir !== "./"
                                                                ? `__dirname + ${JSON.stringify("/" + rootOutputDir)}`
                                                                : "__filename"
                                                });`
                                  ])
                                : "// no baseURI",
                        "",
                        "// object to store loaded chunks",
                        '// "1" means "loaded", otherwise not loaded yet',
                        "var installedChunks = {",
                        Template.indent(
                                Array.from(initialChunkIds, id => `${JSON.stringify(id)}: 1`).join(
                                        ",\n"
                                )
                        ),
                        "};",
                        "",
                        withOnChunkLoad
                                ? `${
                                                RuntimeGlobals.onChunksLoaded
                                  }.require = ${runtimeTemplate.returningFunction(
                                                "installedChunks[chunkId]",
                                                "chunkId"
                                  )};`
                                : "// no on chunks loaded",
                        "",
                        withLoading || withExternalInstallChunk
                                ? `var installChunk = ${runtimeTemplate.basicFunction("chunk", [
                                                "var moreModules = chunk.modules, chunkIds = chunk.ids, runtime = chunk.runtime;",
                                                "for(var moduleId in moreModules) {",
                                                Template.indent([
                                                        `if(${RuntimeGlobals.hasOwnProperty}(moreModules, moduleId)) {`,
                                                        Template.indent([
                                                                `${RuntimeGlobals.moduleFactories}[moduleId] = moreModules[moduleId];`
                                                        ]),
                                                        "}"
                                                ]),
                                                "}",
                                                `if(runtime) runtime(__webpack_require__);`,
                                                "for(var i = 0; i < chunkIds.length; i++)",
                                                Template.indent("installedChunks[chunkIds[i]] = 1;"),
                                                withOnChunkLoad ? `${RuntimeGlobals.onChunksLoaded}();` : ""
                                  ])};`
                                : "// no chunk install function needed",
                        "",
                        withLoading
                                ? Template.asString([
                                                "// require() chunk loading for javascript",
                                                `${fn}.require = ${runtimeTemplate.basicFunction(
                                                        "chunkId, promises",
                                                        hasJsMatcher !== false
                                                                ? [
                                                                                '// "1" is the signal for "already loaded"',
                                                                                "if(!installedChunks[chunkId]) {",
                                                                                Template.indent([
                                                                                        hasJsMatcher === true
                                                                                                ? "if(true) { // all chunks have JS"
                                                                                                : `if(${hasJsMatcher("chunkId")}) {`,
                                                                                        Template.indent([
                                                                                                `installChunk(require(${JSON.stringify(
                                                                                                        rootOutputDir
                                                                                                )} + ${
                                                                                                        RuntimeGlobals.getChunkScriptFilename
                                                                                                }(chunkId)));`
                                                                                        ]),
                                                                                        "} else installedChunks[chunkId] = 1;",
                                                                                        ""
                                                                                ]),
                                                                                "}"
                                                                  ]
                                                                : "installedChunks[chunkId] = 1;"
                                                )};`
                                  ])
                                : "// no chunk loading",
                        "",
                        withExternalInstallChunk
                                ? Template.asString([
                                                "module.exports = __webpack_require__;",
                                                `${RuntimeGlobals.externalInstallChunk} = installChunk;`
                                  ])
                                : "// no external install chunk",
                        "",
                        withHmr
                                ? Template.asString([
                                                "function loadUpdateChunk(chunkId, updatedModulesList) {",
                                                Template.indent([
                                                        `var update = require(${JSON.stringify(rootOutputDir)} + ${
                                                                RuntimeGlobals.getChunkUpdateScriptFilename
                                                        }(chunkId));`,
                                                        "var updatedModules = update.modules;",
                                                        "var runtime = update.runtime;",
                                                        "for(var moduleId in updatedModules) {",
                                                        Template.indent([
                                                                `if(${RuntimeGlobals.hasOwnProperty}(updatedModules, moduleId)) {`,
                                                                Template.indent([
                                                                        `currentUpdate[moduleId] = updatedModules[moduleId];`,
                                                                        "if(updatedModulesList) updatedModulesList.push(moduleId);"
                                                                ]),
                                                                "}"
                                                        ]),
                                                        "}",
                                                        "if(runtime) currentUpdateRuntime.push(runtime);"
                                                ]),
                                                "}",
                                                "",
                                                Template.getFunctionContent(
                                                        require("../hmr/JavascriptHotModuleReplacement.runtime.js")
                                                )
                                                        .replace(/\$key\$/g, "require")
                                                        .replace(/\$installedChunks\$/g, "installedChunks")
                                                        .replace(/\$loadUpdateChunk\$/g, "loadUpdateChunk")
                                                        .replace(/\$moduleCache\$/g, RuntimeGlobals.moduleCache)
                                                        .replace(/\$moduleFactories\$/g, RuntimeGlobals.moduleFactories)
                                                        .replace(
                                                                /\$ensureChunkHandlers\$/g,
                                                                RuntimeGlobals.ensureChunkHandlers
                                                        )
                                                        .replace(/\$hasOwnProperty\$/g, RuntimeGlobals.hasOwnProperty)
                                                        .replace(/\$hmrModuleData\$/g, RuntimeGlobals.hmrModuleData)
                                                        .replace(
                                                                /\$hmrDownloadUpdateHandlers\$/g,
                                                                RuntimeGlobals.hmrDownloadUpdateHandlers
                                                        )
                                                        .replace(
                                                                /\$hmrInvalidateModuleHandlers\$/g,
                                                                RuntimeGlobals.hmrInvalidateModuleHandlers
                                                        )
                                  ])
                                : "// no HMR",
                        "",
                        withHmrManifest
                                ? Template.asString([
                                                `${RuntimeGlobals.hmrDownloadManifest} = function() {`,
                                                Template.indent([
                                                        "return Promise.resolve().then(function() {",
                                                        Template.indent([
                                                                `return require(${JSON.stringify(rootOutputDir)} + ${
                                                                        RuntimeGlobals.getUpdateManifestFilename
                                                                }());`
                                                        ]),
                                                        '}).catch(function(err) { if(err.code !== "MODULE_NOT_FOUND") throw err; });'
                                                ]),
                                                "}"
                                  ])
                                : "// no HMR manifest"
                ]);
        }
}

module.exports = RequireChunkLoadingRuntimeModule;