diff options
Diffstat (limited to 'node_modules/webpack/lib/HotModuleReplacementPlugin.js')
| -rw-r--r-- | node_modules/webpack/lib/HotModuleReplacementPlugin.js | 259 |
1 files changed, 259 insertions, 0 deletions
diff --git a/node_modules/webpack/lib/HotModuleReplacementPlugin.js b/node_modules/webpack/lib/HotModuleReplacementPlugin.js new file mode 100644 index 000000000..640e05e9d --- /dev/null +++ b/node_modules/webpack/lib/HotModuleReplacementPlugin.js @@ -0,0 +1,259 @@ +/*
+ MIT License http://www.opensource.org/licenses/mit-license.php
+ Author Tobias Koppers @sokra
+*/
+"use strict";
+var Template = require("./Template");
+var ModuleHotAcceptDependency = require("./dependencies/ModuleHotAcceptDependency");
+var ModuleHotDeclineDependency = require("./dependencies/ModuleHotDeclineDependency");
+var RawSource = require("webpack-sources").RawSource;
+var ConstDependency = require("./dependencies/ConstDependency");
+var NullFactory = require("./NullFactory");
+const ParserHelpers = require("./ParserHelpers");
+
+function HotModuleReplacementPlugin(options) {
+ options = options || {};
+ this.multiStep = options.multiStep;
+ this.fullBuildTimeout = options.fullBuildTimeout || 200;
+}
+module.exports = HotModuleReplacementPlugin;
+
+HotModuleReplacementPlugin.prototype.apply = function(compiler) {
+ var multiStep = this.multiStep;
+ var fullBuildTimeout = this.fullBuildTimeout;
+ var hotUpdateChunkFilename = compiler.options.output.hotUpdateChunkFilename;
+ var hotUpdateMainFilename = compiler.options.output.hotUpdateMainFilename;
+ compiler.plugin("compilation", function(compilation, params) {
+ var hotUpdateChunkTemplate = compilation.hotUpdateChunkTemplate;
+ if(!hotUpdateChunkTemplate) return;
+
+ var normalModuleFactory = params.normalModuleFactory;
+
+ compilation.dependencyFactories.set(ConstDependency, new NullFactory());
+ compilation.dependencyTemplates.set(ConstDependency, new ConstDependency.Template());
+
+ compilation.dependencyFactories.set(ModuleHotAcceptDependency, normalModuleFactory);
+ compilation.dependencyTemplates.set(ModuleHotAcceptDependency, new ModuleHotAcceptDependency.Template());
+
+ compilation.dependencyFactories.set(ModuleHotDeclineDependency, normalModuleFactory);
+ compilation.dependencyTemplates.set(ModuleHotDeclineDependency, new ModuleHotDeclineDependency.Template());
+
+ compilation.plugin("record", function(compilation, records) {
+ if(records.hash === this.hash) return;
+ records.hash = compilation.hash;
+ records.moduleHashs = {};
+ this.modules.forEach(function(module) {
+ var identifier = module.identifier();
+ var hash = require("crypto").createHash("md5");
+ module.updateHash(hash);
+ records.moduleHashs[identifier] = hash.digest("hex");
+ });
+ records.chunkHashs = {};
+ this.chunks.forEach(function(chunk) {
+ records.chunkHashs[chunk.id] = chunk.hash;
+ });
+ records.chunkModuleIds = {};
+ this.chunks.forEach(function(chunk) {
+ records.chunkModuleIds[chunk.id] = chunk.modules.map(function(m) {
+ return m.id;
+ });
+ });
+ });
+ var initialPass = false;
+ var recompilation = false;
+ compilation.plugin("after-hash", function() {
+ var records = this.records;
+ if(!records) {
+ initialPass = true;
+ return;
+ }
+ if(!records.hash)
+ initialPass = true;
+ var preHash = records.preHash || "x";
+ var prepreHash = records.prepreHash || "x";
+ if(preHash === this.hash) {
+ recompilation = true;
+ this.modifyHash(prepreHash);
+ return;
+ }
+ records.prepreHash = records.hash || "x";
+ records.preHash = this.hash;
+ this.modifyHash(records.prepreHash);
+ });
+ compilation.plugin("should-generate-chunk-assets", function() {
+ if(multiStep && !recompilation && !initialPass)
+ return false;
+ });
+ compilation.plugin("need-additional-pass", function() {
+ if(multiStep && !recompilation && !initialPass)
+ return true;
+ });
+ compiler.plugin("additional-pass", function(callback) {
+ if(multiStep)
+ return setTimeout(callback, fullBuildTimeout);
+ return callback();
+ });
+ compilation.plugin("additional-chunk-assets", function() {
+ var records = this.records;
+ if(records.hash === this.hash) return;
+ if(!records.moduleHashs || !records.chunkHashs || !records.chunkModuleIds) return;
+ this.modules.forEach(function(module) {
+ var identifier = module.identifier();
+ var hash = require("crypto").createHash("md5");
+ module.updateHash(hash);
+ hash = hash.digest("hex");
+ module.hotUpdate = records.moduleHashs[identifier] !== hash;
+ });
+ var hotUpdateMainContent = {
+ h: this.hash,
+ c: {}
+ };
+ Object.keys(records.chunkHashs).forEach(function(chunkId) {
+ chunkId = isNaN(+chunkId) ? chunkId : +chunkId;
+ var currentChunk = this.chunks.find(chunk => chunk.id === chunkId);
+ if(currentChunk) {
+ var newModules = currentChunk.modules.filter(function(module) {
+ return module.hotUpdate;
+ });
+ var allModules = {};
+ currentChunk.modules.forEach(function(module) {
+ allModules[module.id] = true;
+ });
+ var removedModules = records.chunkModuleIds[chunkId].filter(function(id) {
+ return !allModules[id];
+ });
+ if(newModules.length > 0 || removedModules.length > 0) {
+ var source = hotUpdateChunkTemplate.render(chunkId, newModules, removedModules, this.hash, this.moduleTemplate, this.dependencyTemplates);
+ var filename = this.getPath(hotUpdateChunkFilename, {
+ hash: records.hash,
+ chunk: currentChunk
+ });
+ this.additionalChunkAssets.push(filename);
+ this.assets[filename] = source;
+ hotUpdateMainContent.c[chunkId] = true;
+ currentChunk.files.push(filename);
+ this.applyPlugins("chunk-asset", currentChunk, filename);
+ }
+ } else {
+ hotUpdateMainContent.c[chunkId] = false;
+ }
+ }, this);
+ var source = new RawSource(JSON.stringify(hotUpdateMainContent));
+ var filename = this.getPath(hotUpdateMainFilename, {
+ hash: records.hash
+ });
+ this.assets[filename] = source;
+ });
+
+ compilation.mainTemplate.plugin("hash", function(hash) {
+ hash.update("HotMainTemplateDecorator");
+ });
+
+ compilation.mainTemplate.plugin("module-require", function(_, chunk, hash, varModuleId) {
+ return "hotCreateRequire(" + varModuleId + ")";
+ });
+
+ compilation.mainTemplate.plugin("require-extensions", function(source) {
+ var buf = [source];
+ buf.push("");
+ buf.push("// __webpack_hash__");
+ buf.push(this.requireFn + ".h = function() { return hotCurrentHash; };");
+ return this.asString(buf);
+ });
+
+ compilation.mainTemplate.plugin("bootstrap", function(source, chunk, hash) {
+ source = this.applyPluginsWaterfall("hot-bootstrap", source, chunk, hash);
+ return this.asString([
+ source,
+ "",
+ hotInitCode
+ .replace(/\$require\$/g, this.requireFn)
+ .replace(/\$hash\$/g, JSON.stringify(hash))
+ .replace(/\/\*foreachInstalledChunks\*\//g, chunk.chunks.length > 0 ? "for(var chunkId in installedChunks)" : "var chunkId = " + JSON.stringify(chunk.id) + ";")
+ ]);
+ });
+
+ compilation.mainTemplate.plugin("global-hash", function() {
+ return true;
+ });
+
+ compilation.mainTemplate.plugin("current-hash", function(_, length) {
+ if(isFinite(length))
+ return "hotCurrentHash.substr(0, " + length + ")";
+ else
+ return "hotCurrentHash";
+ });
+
+ compilation.mainTemplate.plugin("module-obj", function(source, chunk, hash, varModuleId) {
+ return this.asString([
+ source + ",",
+ "hot: hotCreateModule(" + varModuleId + "),",
+ "parents: (hotCurrentParentsTemp = hotCurrentParents, hotCurrentParents = [], hotCurrentParentsTemp),",
+ "children: []"
+ ]);
+ });
+
+ params.normalModuleFactory.plugin("parser", function(parser, parserOptions) {
+ parser.plugin("expression __webpack_hash__", ParserHelpers.toConstantDependency("__webpack_require__.h()"));
+ parser.plugin("evaluate typeof __webpack_hash__", ParserHelpers.evaluateToString("string"));
+ parser.plugin("evaluate Identifier module.hot", function(expr) {
+ return ParserHelpers.evaluateToBoolean(!!this.state.compilation.hotUpdateChunkTemplate)(expr);
+ });
+ parser.plugin("call module.hot.accept", function(expr) {
+ if(!this.state.compilation.hotUpdateChunkTemplate) return false;
+ if(expr.arguments.length >= 1) {
+ var arg = this.evaluateExpression(expr.arguments[0]);
+ var params = [],
+ requests = [];
+ if(arg.isString()) {
+ params = [arg];
+ } else if(arg.isArray()) {
+ params = arg.items.filter(function(param) {
+ return param.isString();
+ });
+ }
+ if(params.length > 0) {
+ params.forEach(function(param, idx) {
+ var request = param.string;
+ var dep = new ModuleHotAcceptDependency(request, param.range);
+ dep.optional = true;
+ dep.loc = Object.create(expr.loc);
+ dep.loc.index = idx;
+ this.state.module.addDependency(dep);
+ requests.push(request);
+ }.bind(this));
+ if(expr.arguments.length > 1)
+ this.applyPluginsBailResult("hot accept callback", expr.arguments[1], requests);
+ else
+ this.applyPluginsBailResult("hot accept without callback", expr, requests);
+ }
+ }
+ });
+ parser.plugin("call module.hot.decline", function(expr) {
+ if(!this.state.compilation.hotUpdateChunkTemplate) return false;
+ if(expr.arguments.length === 1) {
+ var arg = this.evaluateExpression(expr.arguments[0]);
+ var params = [];
+ if(arg.isString()) {
+ params = [arg];
+ } else if(arg.isArray()) {
+ params = arg.items.filter(function(param) {
+ return param.isString();
+ });
+ }
+ params.forEach(function(param, idx) {
+ var dep = new ModuleHotDeclineDependency(param.string, param.range);
+ dep.optional = true;
+ dep.loc = Object.create(expr.loc);
+ dep.loc.index = idx;
+ this.state.module.addDependency(dep);
+ }.bind(this));
+ }
+ });
+ parser.plugin("expression module.hot", ParserHelpers.skipTraversal);
+ });
+ });
+
+};
+
+var hotInitCode = Template.getFunctionContent(require("./HotModuleReplacement.runtime.js"));
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