Gecko [ fernandoquevedodop.com ]

Name	Size	Permission
UnsupportedWebAssemblyFeatureE...	439 B	-rw-r--r--
WasmFinalizeExportsPlugin.js	1.99 KB	-rw-r--r--
WasmMainTemplatePlugin.js	10.01 KB	-rw-r--r--
WebAssemblyGenerator.js	11.5 KB	-rw-r--r--
WebAssemblyInInitialChunkError...	2.68 KB	-rw-r--r--
WebAssemblyJavascriptGenerator...	4.69 KB	-rw-r--r--
WebAssemblyModulesPlugin.js	3.58 KB	-rw-r--r--
WebAssemblyParser.js	4.45 KB	-rw-r--r--
WebAssemblyUtils.js	1.61 KB	-rw-r--r--

Code Editor : WasmMainTemplatePlugin.js

/*
	MIT License http://www.opensource.org/licenses/mit-license.php
	Author Tobias Koppers @sokra
*/
"use strict";

const Template = require("../Template");
const WebAssemblyUtils = require("./WebAssemblyUtils");

/** @typedef {import("../Module")} Module */
/** @typedef {import("../MainTemplate")} MainTemplate */

// Get all wasm modules
const getAllWasmModules = chunk => {
	const wasmModules = chunk.getAllAsyncChunks();
	const array = [];
	for (const chunk of wasmModules) {
		for (const m of chunk.modulesIterable) {
			if (m.type.startsWith("webassembly")) {
				array.push(m);
			}
		}
	}

return array;
};

/**
 * generates the import object function for a module
 * @param {Module} module the module
 * @param {boolean} mangle mangle imports
 * @returns {string} source code
 */
const generateImportObject = (module, mangle) => {
	const waitForInstances = new Map();
	const properties = [];
	const usedWasmDependencies = WebAssemblyUtils.getUsedDependencies(
		module,
		mangle
	);
	for (const usedDep of usedWasmDependencies) {
		const dep = usedDep.dependency;
		const importedModule = dep.module;
		const exportName = dep.name;
		const usedName = importedModule && importedModule.isUsed(exportName);
		const description = dep.description;
		const direct = dep.onlyDirectImport;

const module = usedDep.module;
		const name = usedDep.name;

if (direct) {
			const instanceVar = `m${waitForInstances.size}`;
			waitForInstances.set(instanceVar, importedModule.id);
			properties.push({
				module,
				name,
				value: `${instanceVar}[${JSON.stringify(usedName)}]`
			});
		} else {
			const params = description.signature.params.map(
				(param, k) => "p" + k + param.valtype
			);

const mod = `installedModules[${JSON.stringify(importedModule.id)}]`;
			const func = `${mod}.exports[${JSON.stringify(usedName)}]`;

properties.push({
				module,
				name,
				value: Template.asString([
					(importedModule.type.startsWith("webassembly")
						? `${mod} ? ${func} : `
						: "") + `function(${params}) {`,
					Template.indent([`return ${func}(${params});`]),
					"}"
				])
			});
		}
	}

let importObject;
	if (mangle) {
		importObject = [
			"return {",
			Template.indent([
				properties.map(p => `${JSON.stringify(p.name)}: ${p.value}`).join(",\n")
			]),
			"};"
		];
	} else {
		const propertiesByModule = new Map();
		for (const p of properties) {
			let list = propertiesByModule.get(p.module);
			if (list === undefined) {
				propertiesByModule.set(p.module, (list = []));
			}
			list.push(p);
		}
		importObject = [
			"return {",
			Template.indent([
				Array.from(propertiesByModule, ([module, list]) => {
					return Template.asString([
						`${JSON.stringify(module)}: {`,
						Template.indent([
							list.map(p => `${JSON.stringify(p.name)}: ${p.value}`).join(",\n")
						]),
						"}"
					]);
				}).join(",\n")
			]),
			"};"
		];
	}

if (waitForInstances.size === 1) {
		const moduleId = Array.from(waitForInstances.values())[0];
		const promise = `installedWasmModules[${JSON.stringify(moduleId)}]`;
		const variable = Array.from(waitForInstances.keys())[0];
		return Template.asString([
			`${JSON.stringify(module.id)}: function() {`,
			Template.indent([
				`return promiseResolve().then(function() { return ${promise}; }).then(function(${variable}) {`,
				Template.indent(importObject),
				"});"
			]),
			"},"
		]);
	} else if (waitForInstances.size > 0) {
		const promises = Array.from(
			waitForInstances.values(),
			id => `installedWasmModules[${JSON.stringify(id)}]`
		).join(", ");
		const variables = Array.from(
			waitForInstances.keys(),
			(name, i) => `${name} = array[${i}]`
		).join(", ");
		return Template.asString([
			`${JSON.stringify(module.id)}: function() {`,
			Template.indent([
				`return promiseResolve().then(function() { return Promise.all([${promises}]); }).then(function(array) {`,
				Template.indent([`var ${variables};`, ...importObject]),
				"});"
			]),
			"},"
		]);
	} else {
		return Template.asString([
			`${JSON.stringify(module.id)}: function() {`,
			Template.indent(importObject),
			"},"
		]);
	}
};

class WasmMainTemplatePlugin {
	constructor({ generateLoadBinaryCode, supportsStreaming, mangleImports }) {
		this.generateLoadBinaryCode = generateLoadBinaryCode;
		this.supportsStreaming = supportsStreaming;
		this.mangleImports = mangleImports;
	}

/**
	 * @param {MainTemplate} mainTemplate main template
	 * @returns {void}
	 */
	apply(mainTemplate) {
		mainTemplate.hooks.localVars.tap(
			"WasmMainTemplatePlugin",
			(source, chunk) => {
				const wasmModules = getAllWasmModules(chunk);
				if (wasmModules.length === 0) return source;
				const importObjects = wasmModules.map(module => {
					return generateImportObject(module, this.mangleImports);
				});
				return Template.asString([
					source,
					"",
					"// object to store loaded and loading wasm modules",
					"var installedWasmModules = {};",
					"",
					// This function is used to delay reading the installed wasm module promises
					// by a microtask. Sorting them doesn't help because there are egdecases where
					// sorting is not possible (modules splitted into different chunks).
					// So we not even trying and solve this by a microtask delay.
					"function promiseResolve() { return Promise.resolve(); }",
					"",
					"var wasmImportObjects = {",
					Template.indent(importObjects),
					"};"
				]);
			}
		);
		mainTemplate.hooks.requireEnsure.tap(
			"WasmMainTemplatePlugin",
			(source, chunk, hash) => {
				const webassemblyModuleFilename =
					mainTemplate.outputOptions.webassemblyModuleFilename;

module.exports = WasmMainTemplatePlugin;

${this.title}

Code Editor : WasmMainTemplatePlugin.js