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/*
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 {
getChunkFilenameTemplate,
chunkHasJs
} = require("../javascript/JavascriptModulesPlugin");
const { getInitialChunkIds } = require("../javascript/StartupHelpers");
const compileBooleanMatcher = require("../util/compileBooleanMatcher");
const { getUndoPath } = require("../util/identifier");
class ImportScriptsChunkLoadingRuntimeModule extends RuntimeModule {
constructor(runtimeRequirements, withCreateScriptUrl) {
super("importScripts chunk loading", RuntimeModule.STAGE_ATTACH);
this.runtimeRequirements = runtimeRequirements;
this._withCreateScriptUrl = withCreateScriptUrl;
}
/**
* @returns {string} runtime code
*/
generate() {
const {
chunk,
chunkGraph,
compilation: {
runtimeTemplate,
outputOptions: { globalObject, chunkLoadingGlobal, hotUpdateGlobal }
},
_withCreateScriptUrl: withCreateScriptUrl
} = this;
const fn = RuntimeGlobals.ensureChunkHandlers;
const withBaseURI = this.runtimeRequirements.has(RuntimeGlobals.baseURI);
const withLoading = this.runtimeRequirements.has(
RuntimeGlobals.ensureChunkHandlers
);
const withHmr = this.runtimeRequirements.has(
RuntimeGlobals.hmrDownloadUpdateHandlers
);
const withHmrManifest = this.runtimeRequirements.has(
RuntimeGlobals.hmrDownloadManifest
);
const chunkLoadingGlobalExpr = `${globalObject}[${JSON.stringify(
chunkLoadingGlobal
)}]`;
const hasJsMatcher = compileBooleanMatcher(
chunkGraph.getChunkConditionMap(chunk, chunkHasJs)
);
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,
false
);
return Template.asString([
withBaseURI
? Template.asString([
`${RuntimeGlobals.baseURI} = self.location + ${JSON.stringify(
rootOutputDir ? "/../" + rootOutputDir : ""
)};`
])
: "// no baseURI",
"",
"// object to store loaded chunks",
'// "1" means "already loaded"',
"var installedChunks = {",
Template.indent(
Array.from(initialChunkIds, id => `${JSON.stringify(id)}: 1`).join(
",\n"
)
),
"};",
"",
withLoading
? Template.asString([
"// importScripts chunk loading",
`var installChunk = ${runtimeTemplate.basicFunction("data", [
runtimeTemplate.destructureArray(
["chunkIds", "moreModules", "runtime"],
"data"
),
"for(var moduleId in moreModules) {",
Template.indent([
`if(${RuntimeGlobals.hasOwnProperty}(moreModules, moduleId)) {`,
Template.indent(
`${RuntimeGlobals.moduleFactories}[moduleId] = moreModules[moduleId];`
),
"}"
]),
"}",
"if(runtime) runtime(__webpack_require__);",
"while(chunkIds.length)",
Template.indent("installedChunks[chunkIds.pop()] = 1;"),
"parentChunkLoadingFunction(data);"
])};`
])
: "// no chunk install function needed",
withLoading
? Template.asString([
`${fn}.i = ${runtimeTemplate.basicFunction(
"chunkId, promises",
hasJsMatcher !== false
? [
'// "1" is the signal for "already loaded"',
"if(!installedChunks[chunkId]) {",
Template.indent([
hasJsMatcher === true
? "if(true) { // all chunks have JS"
: `if(${hasJsMatcher("chunkId")}) {`,
Template.indent(
`importScripts(${
withCreateScriptUrl
? `${RuntimeGlobals.createScriptUrl}(${RuntimeGlobals.publicPath} + ${RuntimeGlobals.getChunkScriptFilename}(chunkId))`
: `${RuntimeGlobals.publicPath} + ${RuntimeGlobals.getChunkScriptFilename}(chunkId)`
});`
),
"}"
]),
"}"
]
: "installedChunks[chunkId] = 1;"
)};`,
"",
`var chunkLoadingGlobal = ${chunkLoadingGlobalExpr} = ${chunkLoadingGlobalExpr} || [];`,
"var parentChunkLoadingFunction = chunkLoadingGlobal.push.bind(chunkLoadingGlobal);",
"chunkLoadingGlobal.push = installChunk;"
])
: "// no chunk loading",
"",
withHmr
? Template.asString([
"function loadUpdateChunk(chunkId, updatedModulesList) {",
Template.indent([
"var success = false;",
`${globalObject}[${JSON.stringify(
hotUpdateGlobal
)}] = ${runtimeTemplate.basicFunction("_, moreModules, runtime", [
"for(var moduleId in moreModules) {",
Template.indent([
`if(${RuntimeGlobals.hasOwnProperty}(moreModules, moduleId)) {`,
Template.indent([
"currentUpdate[moduleId] = moreModules[moduleId];",
"if(updatedModulesList) updatedModulesList.push(moduleId);"
]),
"}"
]),
"}",
"if(runtime) currentUpdateRuntime.push(runtime);",
"success = true;"
])};`,
"// start update chunk loading",
`importScripts(${
withCreateScriptUrl
? `${RuntimeGlobals.createScriptUrl}(${RuntimeGlobals.publicPath} + ${RuntimeGlobals.getChunkUpdateScriptFilename}(chunkId))`
: `${RuntimeGlobals.publicPath} + ${RuntimeGlobals.getChunkUpdateScriptFilename}(chunkId)`
});`,
'if(!success) throw new Error("Loading update chunk failed for unknown reason");'
]),
"}",
"",
Template.getFunctionContent(
require("../hmr/JavascriptHotModuleReplacement.runtime.js")
)
.replace(/\$key\$/g, "importScrips")
.replace(/\$installedChunks\$/g, "installedChunks")
.replace(/\$loadUpdateChunk\$/g, "loadUpdateChunk")
.replace(/\$moduleCache\$/g, RuntimeGlobals.moduleCache)
.replace(/\$moduleFactories\$/g, RuntimeGlobals.moduleFactories)
.replace(
/\$ensureChunkHandlers\$/g,
RuntimeGlobals.ensureChunkHandlers
)
.replace(/\$hasOwnProperty\$/g, RuntimeGlobals.hasOwnProperty)
.replace(/\$hmrModuleData\$/g, RuntimeGlobals.hmrModuleData)
.replace(
/\$hmrDownloadUpdateHandlers\$/g,
RuntimeGlobals.hmrDownloadUpdateHandlers
)
.replace(
/\$hmrInvalidateModuleHandlers\$/g,
RuntimeGlobals.hmrInvalidateModuleHandlers
)
])
: "// no HMR",
"",
withHmrManifest
? Template.asString([
`${
RuntimeGlobals.hmrDownloadManifest
} = ${runtimeTemplate.basicFunction("", [
'if (typeof fetch === "undefined") throw new Error("No browser support: need fetch API");',
`return fetch(${RuntimeGlobals.publicPath} + ${
RuntimeGlobals.getUpdateManifestFilename
}()).then(${runtimeTemplate.basicFunction("response", [
"if(response.status === 404) return; // no update available",
'if(!response.ok) throw new Error("Failed to fetch update manifest " + response.statusText);',
"return response.json();"
])});`
])};`
])
: "// no HMR manifest"
]);
}
}
module.exports = ImportScriptsChunkLoadingRuntimeModule;