mirror of https://github.com/webpack/webpack.git
51 lines
1.4 KiB
JavaScript
51 lines
1.4 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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/* globals WebAssembly */
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"use strict";
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// Syntax: https://developer.mozilla.org/en/SpiderMonkey/Parser_API
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const { Tapable } = require("tapable");
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const WebAssemblyImportDependency = require("./dependencies/WebAssemblyImportDependency");
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class WebAssemblyParser extends Tapable {
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constructor(options) {
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super();
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this.hooks = {};
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this.options = options;
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}
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parse(source, state, callback) {
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// TODO parse WASM AST and walk it
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// TODO extract imports
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// flag it as ESM
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state.module.buildMeta.exportsType = "namespace";
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// extract exports
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// TODO find more efficient way doing it
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// TODO use Promises
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if (typeof WebAssembly !== "undefined") {
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WebAssembly.compile(source)
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.then(module => {
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state.module.buildMeta.providedExports = WebAssembly.Module.exports(
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module
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).map(exp => exp.name);
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for (const imp of WebAssembly.Module.imports(module)) {
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const dep = new WebAssemblyImportDependency(imp.module, imp.name);
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state.module.addDependency(dep);
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}
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})
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.then(() => callback(null, state), err => callback(err));
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} else {
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throw new Error(
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"Can't compile WebAssembly modules without WebAssembly support in current node.js version (Update to latest node.js version)"
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);
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}
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}
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}
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module.exports = WebAssemblyParser;
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