[6a3a178] | 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 | "use strict";
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| 7 |
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| 8 | const { UsageState } = require("../ExportsInfo");
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| 9 | const makeSerializable = require("../util/makeSerializable");
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| 10 | const NullDependency = require("./NullDependency");
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| 11 |
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| 12 | /** @typedef {import("webpack-sources").ReplaceSource} ReplaceSource */
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| 13 | /** @typedef {import("../ChunkGraph")} ChunkGraph */
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| 14 | /** @typedef {import("../Dependency")} Dependency */
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| 15 | /** @typedef {import("../Dependency").UpdateHashContext} UpdateHashContext */
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| 16 | /** @typedef {import("../DependencyTemplate").DependencyTemplateContext} DependencyTemplateContext */
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| 17 | /** @typedef {import("../Module")} Module */
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| 18 | /** @typedef {import("../ModuleGraph")} ModuleGraph */
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| 19 | /** @typedef {import("../util/Hash")} Hash */
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| 20 | /** @typedef {import("../util/runtime").RuntimeSpec} RuntimeSpec */
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| 21 |
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| 22 | /**
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| 23 | * @param {ModuleGraph} moduleGraph the module graph
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| 24 | * @param {Module} module the module
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| 25 | * @param {string | null} exportName name of the export if any
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| 26 | * @param {string | null} property name of the requested property
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| 27 | * @param {RuntimeSpec} runtime for which runtime
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| 28 | * @returns {any} value of the property
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| 29 | */
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| 30 | const getProperty = (moduleGraph, module, exportName, property, runtime) => {
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| 31 | if (!exportName) {
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| 32 | switch (property) {
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| 33 | case "usedExports": {
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| 34 | const usedExports = moduleGraph
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| 35 | .getExportsInfo(module)
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| 36 | .getUsedExports(runtime);
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| 37 | if (
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| 38 | typeof usedExports === "boolean" ||
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| 39 | usedExports === undefined ||
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| 40 | usedExports === null
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| 41 | ) {
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| 42 | return usedExports;
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| 43 | }
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| 44 | return Array.from(usedExports).sort();
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| 45 | }
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| 46 | }
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| 47 | }
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| 48 | switch (property) {
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| 49 | case "used":
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| 50 | return (
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| 51 | moduleGraph.getExportsInfo(module).getUsed(exportName, runtime) !==
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| 52 | UsageState.Unused
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| 53 | );
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| 54 | case "useInfo": {
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| 55 | const state = moduleGraph
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| 56 | .getExportsInfo(module)
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| 57 | .getUsed(exportName, runtime);
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| 58 | switch (state) {
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| 59 | case UsageState.Used:
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| 60 | case UsageState.OnlyPropertiesUsed:
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| 61 | return true;
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| 62 | case UsageState.Unused:
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| 63 | return false;
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| 64 | case UsageState.NoInfo:
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| 65 | return undefined;
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| 66 | case UsageState.Unknown:
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| 67 | return null;
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| 68 | default:
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| 69 | throw new Error(`Unexpected UsageState ${state}`);
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| 70 | }
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| 71 | }
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| 72 | case "provideInfo":
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| 73 | return moduleGraph.getExportsInfo(module).isExportProvided(exportName);
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| 74 | }
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| 75 | return undefined;
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| 76 | };
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| 77 |
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| 78 | class ExportsInfoDependency extends NullDependency {
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| 79 | constructor(range, exportName, property) {
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| 80 | super();
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| 81 | this.range = range;
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| 82 | this.exportName = exportName;
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| 83 | this.property = property;
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| 84 | }
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| 85 |
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| 86 | serialize(context) {
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| 87 | const { write } = context;
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| 88 | write(this.range);
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| 89 | write(this.exportName);
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| 90 | write(this.property);
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| 91 | super.serialize(context);
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| 92 | }
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| 93 |
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| 94 | static deserialize(context) {
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| 95 | const obj = new ExportsInfoDependency(
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| 96 | context.read(),
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| 97 | context.read(),
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| 98 | context.read()
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| 99 | );
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| 100 | obj.deserialize(context);
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| 101 | return obj;
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| 102 | }
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| 103 | }
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| 104 |
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| 105 | makeSerializable(
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| 106 | ExportsInfoDependency,
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| 107 | "webpack/lib/dependencies/ExportsInfoDependency"
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| 108 | );
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| 109 |
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| 110 | ExportsInfoDependency.Template = class ExportsInfoDependencyTemplate extends (
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| 111 | NullDependency.Template
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| 112 | ) {
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| 113 | /**
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| 114 | * @param {Dependency} dependency the dependency for which the template should be applied
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| 115 | * @param {ReplaceSource} source the current replace source which can be modified
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| 116 | * @param {DependencyTemplateContext} templateContext the context object
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| 117 | * @returns {void}
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| 118 | */
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| 119 | apply(dependency, source, { module, moduleGraph, runtime }) {
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| 120 | const dep = /** @type {ExportsInfoDependency} */ (dependency);
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| 121 |
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| 122 | const value = getProperty(
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| 123 | moduleGraph,
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| 124 | module,
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| 125 | dep.exportName,
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| 126 | dep.property,
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| 127 | runtime
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| 128 | );
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| 129 | source.replace(
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| 130 | dep.range[0],
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| 131 | dep.range[1] - 1,
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| 132 | value === undefined ? "undefined" : JSON.stringify(value)
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| 133 | );
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| 134 | }
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| 135 | };
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| 136 |
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| 137 | module.exports = ExportsInfoDependency;
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