hexo/node_modules/webpack/lib/runtime/AsyncModuleRuntimeModule.js

134 lines
4.2 KiB
JavaScript

/*
MIT License http://www.opensource.org/licenses/mit-license.php
*/
"use strict";
const RuntimeGlobals = require("../RuntimeGlobals");
const Template = require("../Template");
const HelperRuntimeModule = require("./HelperRuntimeModule");
/** @typedef {import("../Compilation")} Compilation */
class AsyncModuleRuntimeModule extends HelperRuntimeModule {
constructor() {
super("async module");
}
/**
* @returns {string | null} runtime code
*/
generate() {
const compilation = /** @type {Compilation} */ (this.compilation);
const { runtimeTemplate } = compilation;
const fn = RuntimeGlobals.asyncModule;
return Template.asString([
'var webpackQueues = typeof Symbol === "function" ? Symbol("webpack queues") : "__webpack_queues__";',
`var webpackExports = typeof Symbol === "function" ? Symbol("webpack exports") : "${RuntimeGlobals.exports}";`,
'var webpackError = typeof Symbol === "function" ? Symbol("webpack error") : "__webpack_error__";',
`var resolveQueue = ${runtimeTemplate.basicFunction("queue", [
"if(queue && queue.d < 1) {",
Template.indent([
"queue.d = 1;",
`queue.forEach(${runtimeTemplate.expressionFunction(
"fn.r--",
"fn"
)});`,
`queue.forEach(${runtimeTemplate.expressionFunction(
"fn.r-- ? fn.r++ : fn()",
"fn"
)});`
]),
"}"
])}`,
`var wrapDeps = ${runtimeTemplate.returningFunction(
`deps.map(${runtimeTemplate.basicFunction("dep", [
'if(dep !== null && typeof dep === "object") {',
Template.indent([
"if(dep[webpackQueues]) return dep;",
"if(dep.then) {",
Template.indent([
"var queue = [];",
"queue.d = 0;",
`dep.then(${runtimeTemplate.basicFunction("r", [
"obj[webpackExports] = r;",
"resolveQueue(queue);"
])}, ${runtimeTemplate.basicFunction("e", [
"obj[webpackError] = e;",
"resolveQueue(queue);"
])});`,
"var obj = {};",
`obj[webpackQueues] = ${runtimeTemplate.expressionFunction(
`fn(queue)`,
"fn"
)};`,
"return obj;"
]),
"}"
]),
"}",
"var ret = {};",
`ret[webpackQueues] = ${runtimeTemplate.emptyFunction()};`,
"ret[webpackExports] = dep;",
"return ret;"
])})`,
"deps"
)};`,
`${fn} = ${runtimeTemplate.basicFunction("module, body, hasAwait", [
"var queue;",
"hasAwait && ((queue = []).d = -1);",
"var depQueues = new Set();",
"var exports = module.exports;",
"var currentDeps;",
"var outerResolve;",
"var reject;",
`var promise = new Promise(${runtimeTemplate.basicFunction(
"resolve, rej",
["reject = rej;", "outerResolve = resolve;"]
)});`,
"promise[webpackExports] = exports;",
`promise[webpackQueues] = ${runtimeTemplate.expressionFunction(
`queue && fn(queue), depQueues.forEach(fn), promise["catch"](${runtimeTemplate.emptyFunction()})`,
"fn"
)};`,
"module.exports = promise;",
`body(${runtimeTemplate.basicFunction("deps", [
"currentDeps = wrapDeps(deps);",
"var fn;",
`var getResult = ${runtimeTemplate.returningFunction(
`currentDeps.map(${runtimeTemplate.basicFunction("d", [
"if(d[webpackError]) throw d[webpackError];",
"return d[webpackExports];"
])})`
)}`,
`var promise = new Promise(${runtimeTemplate.basicFunction(
"resolve",
[
`fn = ${runtimeTemplate.expressionFunction(
"resolve(getResult)",
""
)};`,
"fn.r = 0;",
`var fnQueue = ${runtimeTemplate.expressionFunction(
"q !== queue && !depQueues.has(q) && (depQueues.add(q), q && !q.d && (fn.r++, q.push(fn)))",
"q"
)};`,
`currentDeps.map(${runtimeTemplate.expressionFunction(
"dep[webpackQueues](fnQueue)",
"dep"
)});`
]
)});`,
"return fn.r ? promise : getResult();"
])}, ${runtimeTemplate.expressionFunction(
"(err ? reject(promise[webpackError] = err) : outerResolve(exports)), resolveQueue(queue)",
"err"
)});`,
"queue && queue.d < 0 && (queue.d = 0);"
])};`
]);
}
}
module.exports = AsyncModuleRuntimeModule;