mirror of https://github.com/webpack/webpack.git
266 lines
10 KiB
JavaScript
266 lines
10 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 Template = require("../Template");
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const SyncWaterfallHook = require("tapable").SyncWaterfallHook;
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class JsonpMainTemplatePlugin {
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apply(mainTemplate) {
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const needChunkLoadingCode = chunk => {
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var otherChunksInEntry = chunk.getEntrypoints().some(entrypoint => entrypoint.chunks.length > 1);
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var onDemandChunks = chunk.getNumberOfChunks() > 0;
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return otherChunksInEntry || onDemandChunks;
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};
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// TODO refactor this
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if(!mainTemplate.hooks.jsonpScript) {
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mainTemplate.hooks.jsonpScript = new SyncWaterfallHook(["source", "chunk", "hash"]);
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}
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mainTemplate.hooks.localVars.tap("JsonpMainTemplatePlugin", (source, chunk) => {
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if(needChunkLoadingCode(chunk)) {
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return Template.asString([
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source,
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"",
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"// object to store loaded and loading chunks",
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"var installedChunks = {",
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Template.indent(
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chunk.ids.map(id => `${JSON.stringify(id)}: 0`).join(",\n")
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),
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"};",
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"",
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"var scheduledModules = [];"
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]);
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}
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return source;
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});
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mainTemplate.hooks.jsonpScript.tap("JsonpMainTemplatePlugin", (_, chunk, hash) => {
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const chunkFilename = mainTemplate.outputOptions.chunkFilename;
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const chunkMaps = chunk.getChunkMaps();
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const crossOriginLoading = mainTemplate.outputOptions.crossOriginLoading;
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const chunkLoadTimeout = mainTemplate.outputOptions.chunkLoadTimeout;
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const scriptSrcPath = mainTemplate.getAssetPath(JSON.stringify(chunkFilename), {
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hash: `" + ${mainTemplate.renderCurrentHashCode(hash)} + "`,
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hashWithLength: length => `" + ${mainTemplate.renderCurrentHashCode(hash, length)} + "`,
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chunk: {
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id: "\" + chunkId + \"",
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hash: `" + ${JSON.stringify(chunkMaps.hash)}[chunkId] + "`,
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hashWithLength(length) {
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const shortChunkHashMap = Object.create(null);
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Object.keys(chunkMaps.hash).forEach(chunkId => {
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if(typeof chunkMaps.hash[chunkId] === "string")
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shortChunkHashMap[chunkId] = chunkMaps.hash[chunkId].substr(0, length);
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});
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return `" + ${JSON.stringify(shortChunkHashMap)}[chunkId] + "`;
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},
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name: `" + (${JSON.stringify(chunkMaps.name)}[chunkId]||chunkId) + "`
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}
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});
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return Template.asString([
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"var script = document.createElement('script');",
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"script.charset = 'utf-8';",
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`script.timeout = ${chunkLoadTimeout};`,
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crossOriginLoading ? `script.crossOrigin = ${JSON.stringify(crossOriginLoading)};` : "",
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`if (${mainTemplate.requireFn}.nc) {`,
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Template.indent(`script.setAttribute("nonce", ${mainTemplate.requireFn}.nc);`),
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"}",
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`script.src = ${mainTemplate.requireFn}.p + ${scriptSrcPath};`,
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"var timeout = setTimeout(function(){",
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Template.indent([
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"onScriptComplete({ type: 'timeout', target: script });",
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]),
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`}, ${chunkLoadTimeout});`,
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"script.onerror = script.onload = onScriptComplete;",
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"function onScriptComplete(event) {",
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Template.indent([
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"// avoid mem leaks in IE.",
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"script.onerror = script.onload = null;",
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"clearTimeout(timeout);",
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"var chunk = installedChunks[chunkId];",
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"if(chunk !== 0) {",
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Template.indent([
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"if(chunk) {",
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Template.indent([
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"var errorType = event && (event.type === 'load' ? 'missing' : event.type);",
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"var realSrc = event && event.target && event.target.src;",
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"var error = new Error('Loading chunk ' + chunkId + ' failed.\\n(' + errorType + ': ' + realSrc + ')');",
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"error.type = errorType;",
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"error.request = realSrc;",
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"chunk[1](error);"
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]),
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"}",
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"installedChunks[chunkId] = undefined;"
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]),
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"}"
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]),
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"};",
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]);
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});
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mainTemplate.hooks.requireEnsure.tap("JsonpMainTemplatePlugin", (source, chunk, hash) => {
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return Template.asString([
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source,
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"",
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"// JSONP chunk loading for javascript",
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"",
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"var installedChunkData = installedChunks[chunkId];",
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"if(installedChunkData !== 0) { // 0 means \"already installed\".",
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Template.indent([
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"",
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"// a Promise means \"currently loading\".",
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"if(installedChunkData) {",
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Template.indent([
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"promises.push(installedChunkData[2]);"
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]),
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"} else {",
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Template.indent([
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"// setup Promise in chunk cache",
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"var promise = new Promise(function(resolve, reject) {",
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Template.indent([
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"installedChunkData = installedChunks[chunkId] = [resolve, reject];"
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]),
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"});",
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"promises.push(installedChunkData[2] = promise);",
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"",
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"// start chunk loading",
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"var head = document.getElementsByTagName('head')[0];",
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mainTemplate.hooks.jsonpScript.call("", chunk, hash),
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"head.appendChild(script);"
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]),
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"}",
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]),
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"}",
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]);
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});
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mainTemplate.hooks.requireExtensions.tap("JsonpMainTemplatePlugin", (source, chunk) => {
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if(chunk.getNumberOfChunks() === 0) return source;
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return Template.asString([
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source,
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"",
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"// on error function for async loading",
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`${mainTemplate.requireFn}.oe = function(err) { console.error(err); throw err; };`
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]);
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});
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mainTemplate.hooks.bootstrap.tap("JsonpMainTemplatePlugin", (source, chunk, hash) => {
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if(needChunkLoadingCode(chunk)) {
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return Template.asString([
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source,
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"",
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"// install a JSONP callback for chunk loading",
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"function webpackJsonpCallback(data) {",
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Template.indent([
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"var chunkIds = data[0], moreModules = data[1], executeModules = data[2];",
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"// add \"moreModules\" to the modules object,",
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"// then flag all \"chunkIds\" as loaded and fire callback",
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"var moduleId, chunkId, i = 0, resolves = [], result;",
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"for(;i < chunkIds.length; i++) {",
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Template.indent([
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"chunkId = chunkIds[i];",
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"if(installedChunks[chunkId]) {",
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Template.indent("resolves.push(installedChunks[chunkId][0]);"),
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"}",
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"installedChunks[chunkId] = 0;"
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]),
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"}",
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"for(moduleId in moreModules) {",
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Template.indent([
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"if(Object.prototype.hasOwnProperty.call(moreModules, moduleId)) {",
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Template.indent(mainTemplate.renderAddModule(hash, chunk, "moduleId", "moreModules[moduleId]")),
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"}"
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]),
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"}",
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"if(parentJsonpFunction) parentJsonpFunction(data);",
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"while(resolves.length) {",
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Template.indent("resolves.shift()();"),
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"}",
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mainTemplate.entryPointInChildren(chunk) ? [
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"scheduledModules.push.apply(scheduledModules, executeModules || []);",
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"",
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"for(i = 0; i < scheduledModules.length; i++) {",
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Template.indent([
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"var scheduledModule = scheduledModules[i];",
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"var fullfilled = true;",
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"for(var j = 1; j < scheduledModule.length; j++) {",
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Template.indent([
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"var depId = scheduledModule[j];",
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"if(installedChunks[depId] !== 0) fullfilled = false;"
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]),
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"}",
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"if(fullfilled) {",
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Template.indent([
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"scheduledModules.splice(i--, 1);",
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"result = " + mainTemplate.requireFn + "(" + mainTemplate.requireFn + ".s = scheduledModule[0]);",
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]),
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"}"
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]),
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"}",
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"return result;",
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] : ""
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]),
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"};"
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]);
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}
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return source;
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});
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mainTemplate.hooks.startup.tap("JsonpMainTemplatePlugin", (source, chunk, hash) => {
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if(needChunkLoadingCode(chunk)) {
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var jsonpFunction = mainTemplate.outputOptions.jsonpFunction;
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var globalObject = mainTemplate.outputOptions.globalObject;
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return Template.asString([
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`var jsonpArray = ${globalObject}[${JSON.stringify(jsonpFunction)}] = ${globalObject}[${JSON.stringify(jsonpFunction)}] || [];`,
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"var parentJsonpFunction = jsonpArray.push.bind(jsonpArray);",
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"jsonpArray.push = webpackJsonpCallback;",
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"jsonpArray = jsonpArray.slice();",
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"for(var i = 0; i < jsonpArray.length; i++) webpackJsonpCallback(jsonpArray[i]);",
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"",
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source
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]);
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}
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return source;
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});
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mainTemplate.hooks.hotBootstrap.tap("JsonpMainTemplatePlugin", (source, chunk, hash) => {
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const globalObject = mainTemplate.outputOptions.globalObject;
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const hotUpdateChunkFilename = mainTemplate.outputOptions.hotUpdateChunkFilename;
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const hotUpdateMainFilename = mainTemplate.outputOptions.hotUpdateMainFilename;
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const crossOriginLoading = mainTemplate.outputOptions.crossOriginLoading;
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const hotUpdateFunction = mainTemplate.outputOptions.hotUpdateFunction;
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const currentHotUpdateChunkFilename = mainTemplate.getAssetPath(JSON.stringify(hotUpdateChunkFilename), {
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hash: `" + ${mainTemplate.renderCurrentHashCode(hash)} + "`,
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hashWithLength: length => `" + ${mainTemplate.renderCurrentHashCode(hash, length)} + "`,
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chunk: {
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id: "\" + chunkId + \""
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}
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});
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const currentHotUpdateMainFilename = mainTemplate.getAssetPath(JSON.stringify(hotUpdateMainFilename), {
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hash: `" + ${mainTemplate.renderCurrentHashCode(hash)} + "`,
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hashWithLength: length => `" + ${mainTemplate.renderCurrentHashCode(hash, length)} + "`
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});
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const runtimeSource = Template.getFunctionContent(require("./JsonpMainTemplate.runtime.js"))
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.replace(/\/\/\$semicolon/g, ";")
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.replace(/\$require\$/g, mainTemplate.requireFn)
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.replace(/\$crossOriginLoading\$/g, crossOriginLoading ? `script.crossOrigin = ${JSON.stringify(crossOriginLoading)}` : "")
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.replace(/\$hotMainFilename\$/g, currentHotUpdateMainFilename)
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.replace(/\$hotChunkFilename\$/g, currentHotUpdateChunkFilename)
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.replace(/\$hash\$/g, JSON.stringify(hash));
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return `${source}
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function hotDisposeChunk(chunkId) {
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delete installedChunks[chunkId];
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}
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var parentHotUpdateCallback = ${globalObject}[${JSON.stringify(hotUpdateFunction)}];
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${globalObject}[${JSON.stringify(hotUpdateFunction)}] = ${runtimeSource}`;
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});
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mainTemplate.hooks.hash.tap("JsonpMainTemplatePlugin", hash => {
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hash.update("jsonp");
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hash.update("5");
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hash.update(`${mainTemplate.outputOptions.globalObject}`);
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hash.update(`${mainTemplate.outputOptions.chunkFilename}`);
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hash.update(`${mainTemplate.outputOptions.jsonpFunction}`);
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hash.update(`${mainTemplate.outputOptions.hotUpdateFunction}`);
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});
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}
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}
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module.exports = JsonpMainTemplatePlugin;
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