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authorGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
committerGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
commite06ec920f7a5d784e674c4c4b4e6d1da3dc7391d (patch)
tree55713f725f77b44ebfec86e4eec3ce33e71458ca /node_modules/webpack/lib/wasm/WebAssemblyUtils.js
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Diffstat (limited to 'node_modules/webpack/lib/wasm/WebAssemblyUtils.js')
-rw-r--r--node_modules/webpack/lib/wasm/WebAssemblyUtils.js59
1 files changed, 59 insertions, 0 deletions
diff --git a/node_modules/webpack/lib/wasm/WebAssemblyUtils.js b/node_modules/webpack/lib/wasm/WebAssemblyUtils.js
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+++ b/node_modules/webpack/lib/wasm/WebAssemblyUtils.js
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+/*
+ MIT License http://www.opensource.org/licenses/mit-license.php
+ Author Tobias Koppers @sokra
+*/
+"use strict";
+
+const Template = require("../Template");
+const WebAssemblyImportDependency = require("../dependencies/WebAssemblyImportDependency");
+
+/** @typedef {import("../Module")} Module */
+
+/** @typedef {Object} UsedWasmDependency
+ * @property {WebAssemblyImportDependency} dependency the dependency
+ * @property {string} name the export name
+ * @property {string} module the module name
+ */
+
+const MANGLED_MODULE = "a";
+
+/**
+ * @param {Module} module the module
+ * @param {boolean} mangle mangle module and export names
+ * @returns {UsedWasmDependency[]} used dependencies and (mangled) name
+ */
+const getUsedDependencies = (module, mangle) => {
+ /** @type {UsedWasmDependency[]} */
+ const array = [];
+ let importIndex = 0;
+ for (const dep of module.dependencies) {
+ if (dep instanceof WebAssemblyImportDependency) {
+ if (dep.description.type === "GlobalType" || dep.module === null) {
+ continue;
+ }
+
+ const exportName = dep.name;
+ // TODO add the following 3 lines when removing of ModuleExport is possible
+ // const importedModule = dep.module;
+ // const usedName = importedModule && importedModule.isUsed(exportName);
+ // if (usedName !== false) {
+ if (mangle) {
+ array.push({
+ dependency: dep,
+ name: Template.numberToIdentifer(importIndex++),
+ module: MANGLED_MODULE
+ });
+ } else {
+ array.push({
+ dependency: dep,
+ name: exportName,
+ module: dep.request
+ });
+ }
+ }
+ }
+ return array;
+};
+
+exports.getUsedDependencies = getUsedDependencies;
+exports.MANGLED_MODULE = MANGLED_MODULE;