| 1 | /*
|
|---|
| 2 | MIT License http://www.opensource.org/licenses/mit-license.php
|
|---|
| 3 | */
|
|---|
| 4 |
|
|---|
| 5 | "use strict";
|
|---|
| 6 |
|
|---|
| 7 | const RuntimeGlobals = require("../RuntimeGlobals");
|
|---|
| 8 | const RuntimeModule = require("../RuntimeModule");
|
|---|
| 9 | const Template = require("../Template");
|
|---|
| 10 | const {
|
|---|
| 11 | chunkHasJs,
|
|---|
| 12 | getChunkFilenameTemplate
|
|---|
| 13 | } = require("../javascript/JavascriptModulesPlugin");
|
|---|
| 14 | const { getInitialChunkIds } = require("../javascript/StartupHelpers");
|
|---|
| 15 | const compileBooleanMatcher = require("../util/compileBooleanMatcher");
|
|---|
| 16 | const { getUndoPath } = require("../util/identifier");
|
|---|
| 17 |
|
|---|
| 18 | class ReadFileChunkLoadingRuntimeModule extends RuntimeModule {
|
|---|
| 19 | constructor(runtimeRequirements) {
|
|---|
| 20 | super("readFile chunk loading", RuntimeModule.STAGE_ATTACH);
|
|---|
| 21 | this.runtimeRequirements = runtimeRequirements;
|
|---|
| 22 | }
|
|---|
| 23 |
|
|---|
| 24 | /**
|
|---|
| 25 | * @returns {string} runtime code
|
|---|
| 26 | */
|
|---|
| 27 | generate() {
|
|---|
| 28 | const { chunkGraph, chunk } = this;
|
|---|
| 29 | const { runtimeTemplate } = this.compilation;
|
|---|
| 30 | const fn = RuntimeGlobals.ensureChunkHandlers;
|
|---|
| 31 | const withBaseURI = this.runtimeRequirements.has(RuntimeGlobals.baseURI);
|
|---|
| 32 | const withExternalInstallChunk = this.runtimeRequirements.has(
|
|---|
| 33 | RuntimeGlobals.externalInstallChunk
|
|---|
| 34 | );
|
|---|
| 35 | const withOnChunkLoad = this.runtimeRequirements.has(
|
|---|
| 36 | RuntimeGlobals.onChunksLoaded
|
|---|
| 37 | );
|
|---|
| 38 | const withLoading = this.runtimeRequirements.has(
|
|---|
| 39 | RuntimeGlobals.ensureChunkHandlers
|
|---|
| 40 | );
|
|---|
| 41 | const withHmr = this.runtimeRequirements.has(
|
|---|
| 42 | RuntimeGlobals.hmrDownloadUpdateHandlers
|
|---|
| 43 | );
|
|---|
| 44 | const withHmrManifest = this.runtimeRequirements.has(
|
|---|
| 45 | RuntimeGlobals.hmrDownloadManifest
|
|---|
| 46 | );
|
|---|
| 47 | const conditionMap = chunkGraph.getChunkConditionMap(chunk, chunkHasJs);
|
|---|
| 48 | const hasJsMatcher = compileBooleanMatcher(conditionMap);
|
|---|
| 49 | const initialChunkIds = getInitialChunkIds(chunk, chunkGraph);
|
|---|
| 50 |
|
|---|
| 51 | const outputName = this.compilation.getPath(
|
|---|
| 52 | getChunkFilenameTemplate(chunk, this.compilation.outputOptions),
|
|---|
| 53 | {
|
|---|
| 54 | chunk,
|
|---|
| 55 | contentHashType: "javascript"
|
|---|
| 56 | }
|
|---|
| 57 | );
|
|---|
| 58 | const rootOutputDir = getUndoPath(
|
|---|
| 59 | outputName,
|
|---|
| 60 | this.compilation.outputOptions.path,
|
|---|
| 61 | false
|
|---|
| 62 | );
|
|---|
| 63 |
|
|---|
| 64 | return Template.asString([
|
|---|
| 65 | withBaseURI
|
|---|
| 66 | ? Template.asString([
|
|---|
| 67 | `${RuntimeGlobals.baseURI} = require("url").pathToFileURL(${
|
|---|
| 68 | rootOutputDir
|
|---|
| 69 | ? `__dirname + ${JSON.stringify("/" + rootOutputDir)}`
|
|---|
| 70 | : "__filename"
|
|---|
| 71 | });`
|
|---|
| 72 | ])
|
|---|
| 73 | : "// no baseURI",
|
|---|
| 74 | "",
|
|---|
| 75 | "// object to store loaded chunks",
|
|---|
| 76 | '// "0" means "already loaded", Promise means loading',
|
|---|
| 77 | "var installedChunks = {",
|
|---|
| 78 | Template.indent(
|
|---|
| 79 | Array.from(initialChunkIds, id => `${JSON.stringify(id)}: 0`).join(
|
|---|
| 80 | ",\n"
|
|---|
| 81 | )
|
|---|
| 82 | ),
|
|---|
| 83 | "};",
|
|---|
| 84 | "",
|
|---|
| 85 | withOnChunkLoad
|
|---|
| 86 | ? `${
|
|---|
| 87 | RuntimeGlobals.onChunksLoaded
|
|---|
| 88 | }.readFileVm = ${runtimeTemplate.returningFunction(
|
|---|
| 89 | "installedChunks[chunkId] === 0",
|
|---|
| 90 | "chunkId"
|
|---|
| 91 | )};`
|
|---|
| 92 | : "// no on chunks loaded",
|
|---|
| 93 | "",
|
|---|
| 94 | withLoading || withExternalInstallChunk
|
|---|
| 95 | ? `var installChunk = ${runtimeTemplate.basicFunction("chunk", [
|
|---|
| 96 | "var moreModules = chunk.modules, chunkIds = chunk.ids, runtime = chunk.runtime;",
|
|---|
| 97 | "for(var moduleId in moreModules) {",
|
|---|
| 98 | Template.indent([
|
|---|
| 99 | `if(${RuntimeGlobals.hasOwnProperty}(moreModules, moduleId)) {`,
|
|---|
| 100 | Template.indent([
|
|---|
| 101 | `${RuntimeGlobals.moduleFactories}[moduleId] = moreModules[moduleId];`
|
|---|
| 102 | ]),
|
|---|
| 103 | "}"
|
|---|
| 104 | ]),
|
|---|
| 105 | "}",
|
|---|
| 106 | `if(runtime) runtime(__webpack_require__);`,
|
|---|
| 107 | "for(var i = 0; i < chunkIds.length; i++) {",
|
|---|
| 108 | Template.indent([
|
|---|
| 109 | "if(installedChunks[chunkIds[i]]) {",
|
|---|
| 110 | Template.indent(["installedChunks[chunkIds[i]][0]();"]),
|
|---|
| 111 | "}",
|
|---|
| 112 | "installedChunks[chunkIds[i]] = 0;"
|
|---|
| 113 | ]),
|
|---|
| 114 | "}",
|
|---|
| 115 | withOnChunkLoad ? `${RuntimeGlobals.onChunksLoaded}();` : ""
|
|---|
| 116 | ])};`
|
|---|
| 117 | : "// no chunk install function needed",
|
|---|
| 118 | "",
|
|---|
| 119 | withLoading
|
|---|
| 120 | ? Template.asString([
|
|---|
| 121 | "// ReadFile + VM.run chunk loading for javascript",
|
|---|
| 122 | `${fn}.readFileVm = function(chunkId, promises) {`,
|
|---|
| 123 | hasJsMatcher !== false
|
|---|
| 124 | ? Template.indent([
|
|---|
| 125 | "",
|
|---|
| 126 | "var installedChunkData = installedChunks[chunkId];",
|
|---|
| 127 | 'if(installedChunkData !== 0) { // 0 means "already installed".',
|
|---|
| 128 | Template.indent([
|
|---|
| 129 | '// array of [resolve, reject, promise] means "currently loading"',
|
|---|
| 130 | "if(installedChunkData) {",
|
|---|
| 131 | Template.indent(["promises.push(installedChunkData[2]);"]),
|
|---|
| 132 | "} else {",
|
|---|
| 133 | Template.indent([
|
|---|
| 134 | hasJsMatcher === true
|
|---|
| 135 | ? "if(true) { // all chunks have JS"
|
|---|
| 136 | : `if(${hasJsMatcher("chunkId")}) {`,
|
|---|
| 137 | Template.indent([
|
|---|
| 138 | "// load the chunk and return promise to it",
|
|---|
| 139 | "var promise = new Promise(function(resolve, reject) {",
|
|---|
| 140 | Template.indent([
|
|---|
| 141 | "installedChunkData = installedChunks[chunkId] = [resolve, reject];",
|
|---|
| 142 | `var filename = require('path').join(__dirname, ${JSON.stringify(
|
|---|
| 143 | rootOutputDir
|
|---|
| 144 | )} + ${
|
|---|
| 145 | RuntimeGlobals.getChunkScriptFilename
|
|---|
| 146 | }(chunkId));`,
|
|---|
| 147 | "require('fs').readFile(filename, 'utf-8', function(err, content) {",
|
|---|
| 148 | Template.indent([
|
|---|
| 149 | "if(err) return reject(err);",
|
|---|
| 150 | "var chunk = {};",
|
|---|
| 151 | "require('vm').runInThisContext('(function(exports, require, __dirname, __filename) {' + content + '\\n})', filename)" +
|
|---|
| 152 | "(chunk, require, require('path').dirname(filename), filename);",
|
|---|
| 153 | "installChunk(chunk);"
|
|---|
| 154 | ]),
|
|---|
| 155 | "});"
|
|---|
| 156 | ]),
|
|---|
| 157 | "});",
|
|---|
| 158 | "promises.push(installedChunkData[2] = promise);"
|
|---|
| 159 | ]),
|
|---|
| 160 | "} else installedChunks[chunkId] = 0;"
|
|---|
| 161 | ]),
|
|---|
| 162 | "}"
|
|---|
| 163 | ]),
|
|---|
| 164 | "}"
|
|---|
| 165 | ])
|
|---|
| 166 | : Template.indent(["installedChunks[chunkId] = 0;"]),
|
|---|
| 167 | "};"
|
|---|
| 168 | ])
|
|---|
| 169 | : "// no chunk loading",
|
|---|
| 170 | "",
|
|---|
| 171 | withExternalInstallChunk
|
|---|
| 172 | ? Template.asString([
|
|---|
| 173 | "module.exports = __webpack_require__;",
|
|---|
| 174 | `${RuntimeGlobals.externalInstallChunk} = installChunk;`
|
|---|
| 175 | ])
|
|---|
| 176 | : "// no external install chunk",
|
|---|
| 177 | "",
|
|---|
| 178 | withHmr
|
|---|
| 179 | ? Template.asString([
|
|---|
| 180 | "function loadUpdateChunk(chunkId, updatedModulesList) {",
|
|---|
| 181 | Template.indent([
|
|---|
| 182 | "return new Promise(function(resolve, reject) {",
|
|---|
| 183 | Template.indent([
|
|---|
| 184 | `var filename = require('path').join(__dirname, ${JSON.stringify(
|
|---|
| 185 | rootOutputDir
|
|---|
| 186 | )} + ${RuntimeGlobals.getChunkUpdateScriptFilename}(chunkId));`,
|
|---|
| 187 | "require('fs').readFile(filename, 'utf-8', function(err, content) {",
|
|---|
| 188 | Template.indent([
|
|---|
| 189 | "if(err) return reject(err);",
|
|---|
| 190 | "var update = {};",
|
|---|
| 191 | "require('vm').runInThisContext('(function(exports, require, __dirname, __filename) {' + content + '\\n})', filename)" +
|
|---|
| 192 | "(update, require, require('path').dirname(filename), filename);",
|
|---|
| 193 | "var updatedModules = update.modules;",
|
|---|
| 194 | "var runtime = update.runtime;",
|
|---|
| 195 | "for(var moduleId in updatedModules) {",
|
|---|
| 196 | Template.indent([
|
|---|
| 197 | `if(${RuntimeGlobals.hasOwnProperty}(updatedModules, moduleId)) {`,
|
|---|
| 198 | Template.indent([
|
|---|
| 199 | `currentUpdate[moduleId] = updatedModules[moduleId];`,
|
|---|
| 200 | "if(updatedModulesList) updatedModulesList.push(moduleId);"
|
|---|
| 201 | ]),
|
|---|
| 202 | "}"
|
|---|
| 203 | ]),
|
|---|
| 204 | "}",
|
|---|
| 205 | "if(runtime) currentUpdateRuntime.push(runtime);",
|
|---|
| 206 | "resolve();"
|
|---|
| 207 | ]),
|
|---|
| 208 | "});"
|
|---|
| 209 | ]),
|
|---|
| 210 | "});"
|
|---|
| 211 | ]),
|
|---|
| 212 | "}",
|
|---|
| 213 | "",
|
|---|
| 214 | Template.getFunctionContent(
|
|---|
| 215 | require("../hmr/JavascriptHotModuleReplacement.runtime.js")
|
|---|
| 216 | )
|
|---|
| 217 | .replace(/\$key\$/g, "readFileVm")
|
|---|
| 218 | .replace(/\$installedChunks\$/g, "installedChunks")
|
|---|
| 219 | .replace(/\$loadUpdateChunk\$/g, "loadUpdateChunk")
|
|---|
| 220 | .replace(/\$moduleCache\$/g, RuntimeGlobals.moduleCache)
|
|---|
| 221 | .replace(/\$moduleFactories\$/g, RuntimeGlobals.moduleFactories)
|
|---|
| 222 | .replace(
|
|---|
| 223 | /\$ensureChunkHandlers\$/g,
|
|---|
| 224 | RuntimeGlobals.ensureChunkHandlers
|
|---|
| 225 | )
|
|---|
| 226 | .replace(/\$hasOwnProperty\$/g, RuntimeGlobals.hasOwnProperty)
|
|---|
| 227 | .replace(/\$hmrModuleData\$/g, RuntimeGlobals.hmrModuleData)
|
|---|
| 228 | .replace(
|
|---|
| 229 | /\$hmrDownloadUpdateHandlers\$/g,
|
|---|
| 230 | RuntimeGlobals.hmrDownloadUpdateHandlers
|
|---|
| 231 | )
|
|---|
| 232 | .replace(
|
|---|
| 233 | /\$hmrInvalidateModuleHandlers\$/g,
|
|---|
| 234 | RuntimeGlobals.hmrInvalidateModuleHandlers
|
|---|
| 235 | )
|
|---|
| 236 | ])
|
|---|
| 237 | : "// no HMR",
|
|---|
| 238 | "",
|
|---|
| 239 | withHmrManifest
|
|---|
| 240 | ? Template.asString([
|
|---|
| 241 | `${RuntimeGlobals.hmrDownloadManifest} = function() {`,
|
|---|
| 242 | Template.indent([
|
|---|
| 243 | "return new Promise(function(resolve, reject) {",
|
|---|
| 244 | Template.indent([
|
|---|
| 245 | `var filename = require('path').join(__dirname, ${JSON.stringify(
|
|---|
| 246 | rootOutputDir
|
|---|
| 247 | )} + ${RuntimeGlobals.getUpdateManifestFilename}());`,
|
|---|
| 248 | "require('fs').readFile(filename, 'utf-8', function(err, content) {",
|
|---|
| 249 | Template.indent([
|
|---|
| 250 | "if(err) {",
|
|---|
| 251 | Template.indent([
|
|---|
| 252 | 'if(err.code === "ENOENT") return resolve();',
|
|---|
| 253 | "return reject(err);"
|
|---|
| 254 | ]),
|
|---|
| 255 | "}",
|
|---|
| 256 | "try { resolve(JSON.parse(content)); }",
|
|---|
| 257 | "catch(e) { reject(e); }"
|
|---|
| 258 | ]),
|
|---|
| 259 | "});"
|
|---|
| 260 | ]),
|
|---|
| 261 | "});"
|
|---|
| 262 | ]),
|
|---|
| 263 | "}"
|
|---|
| 264 | ])
|
|---|
| 265 | : "// no HMR manifest"
|
|---|
| 266 | ]);
|
|---|
| 267 | }
|
|---|
| 268 | }
|
|---|
| 269 |
|
|---|
| 270 | module.exports = ReadFileChunkLoadingRuntimeModule;
|
|---|
