137 lines
3.7 KiB
JavaScript
137 lines
3.7 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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"use strict";
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const { UsageState } = require("../ExportsInfo");
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const makeSerializable = require("../util/makeSerializable");
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const NullDependency = require("./NullDependency");
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/** @typedef {import("webpack-sources").ReplaceSource} ReplaceSource */
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/** @typedef {import("../ChunkGraph")} ChunkGraph */
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/** @typedef {import("../Dependency")} Dependency */
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/** @typedef {import("../Dependency").UpdateHashContext} UpdateHashContext */
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/** @typedef {import("../DependencyTemplate").DependencyTemplateContext} DependencyTemplateContext */
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/** @typedef {import("../Module")} Module */
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/** @typedef {import("../ModuleGraph")} ModuleGraph */
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/** @typedef {import("../util/Hash")} Hash */
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/** @typedef {import("../util/runtime").RuntimeSpec} RuntimeSpec */
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/**
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* @param {ModuleGraph} moduleGraph the module graph
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* @param {Module} module the module
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* @param {string | null} exportName name of the export if any
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* @param {string | null} property name of the requested property
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* @param {RuntimeSpec} runtime for which runtime
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* @returns {any} value of the property
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*/
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const getProperty = (moduleGraph, module, exportName, property, runtime) => {
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if (!exportName) {
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switch (property) {
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case "usedExports": {
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const usedExports = moduleGraph
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.getExportsInfo(module)
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.getUsedExports(runtime);
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if (
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typeof usedExports === "boolean" ||
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usedExports === undefined ||
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usedExports === null
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) {
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return usedExports;
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}
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return Array.from(usedExports).sort();
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}
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}
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}
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switch (property) {
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case "used":
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return (
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moduleGraph.getExportsInfo(module).getUsed(exportName, runtime) !==
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UsageState.Unused
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);
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case "useInfo": {
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const state = moduleGraph
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.getExportsInfo(module)
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.getUsed(exportName, runtime);
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switch (state) {
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case UsageState.Used:
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case UsageState.OnlyPropertiesUsed:
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return true;
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case UsageState.Unused:
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return false;
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case UsageState.NoInfo:
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return undefined;
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case UsageState.Unknown:
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return null;
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default:
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throw new Error(`Unexpected UsageState ${state}`);
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}
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}
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case "provideInfo":
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return moduleGraph.getExportsInfo(module).isExportProvided(exportName);
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}
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return undefined;
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};
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class ExportsInfoDependency extends NullDependency {
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constructor(range, exportName, property) {
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super();
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this.range = range;
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this.exportName = exportName;
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this.property = property;
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}
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serialize(context) {
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const { write } = context;
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write(this.range);
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write(this.exportName);
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write(this.property);
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super.serialize(context);
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}
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static deserialize(context) {
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const obj = new ExportsInfoDependency(
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context.read(),
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context.read(),
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context.read()
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);
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obj.deserialize(context);
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return obj;
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}
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}
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makeSerializable(
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ExportsInfoDependency,
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"webpack/lib/dependencies/ExportsInfoDependency"
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);
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ExportsInfoDependency.Template = class ExportsInfoDependencyTemplate extends (
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NullDependency.Template
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) {
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/**
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* @param {Dependency} dependency the dependency for which the template should be applied
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* @param {ReplaceSource} source the current replace source which can be modified
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* @param {DependencyTemplateContext} templateContext the context object
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* @returns {void}
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*/
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apply(dependency, source, { module, moduleGraph, runtime }) {
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const dep = /** @type {ExportsInfoDependency} */ (dependency);
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const value = getProperty(
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moduleGraph,
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module,
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dep.exportName,
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dep.property,
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runtime
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);
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source.replace(
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dep.range[0],
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dep.range[1] - 1,
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value === undefined ? "undefined" : JSON.stringify(value)
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);
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}
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};
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module.exports = ExportsInfoDependency;
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