1 | /*
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2 | MIT License http://www.opensource.org/licenses/mit-license.php
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3 | Author Tobias Koppers @sokra
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4 | */
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5 | ;
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6 |
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7 | const Template = require("../Template");
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8 | const WebAssemblyImportDependency = require("../dependencies/WebAssemblyImportDependency");
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9 |
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10 | /** @typedef {import("../Module")} Module */
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11 |
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12 | /** @typedef {Object} UsedWasmDependency
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13 | * @property {WebAssemblyImportDependency} dependency the dependency
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14 | * @property {string} name the export name
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15 | * @property {string} module the module name
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16 | */
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17 |
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18 | const MANGLED_MODULE = "a";
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19 |
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20 | /**
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21 | * @param {Module} module the module
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22 | * @param {boolean} mangle mangle module and export names
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23 | * @returns {UsedWasmDependency[]} used dependencies and (mangled) name
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24 | */
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25 | const getUsedDependencies = (module, mangle) => {
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26 | /** @type {UsedWasmDependency[]} */
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27 | const array = [];
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28 | let importIndex = 0;
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29 | for (const dep of module.dependencies) {
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30 | if (dep instanceof WebAssemblyImportDependency) {
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31 | if (dep.description.type === "GlobalType" || dep.module === null) {
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32 | continue;
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33 | }
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34 |
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35 | const exportName = dep.name;
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36 | // TODO add the following 3 lines when removing of ModuleExport is possible
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37 | // const importedModule = dep.module;
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38 | // const usedName = importedModule && importedModule.isUsed(exportName);
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39 | // if (usedName !== false) {
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40 | if (mangle) {
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41 | array.push({
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42 | dependency: dep,
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43 | name: Template.numberToIdentifer(importIndex++),
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44 | module: MANGLED_MODULE
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45 | });
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46 | } else {
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47 | array.push({
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48 | dependency: dep,
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49 | name: exportName,
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50 | module: dep.request
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51 | });
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52 | }
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53 | }
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54 | }
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55 | return array;
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56 | };
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57 |
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58 | exports.getUsedDependencies = getUsedDependencies;
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59 | exports.MANGLED_MODULE = MANGLED_MODULE;
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