153 lines
		
	
	
		
			4.6 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			153 lines
		
	
	
		
			4.6 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
/*
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	MIT License http://www.opensource.org/licenses/mit-license.php
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	Author Ivan Kopeykin @vankop
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*/
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"use strict";
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const makeSerializable = require("../util/makeSerializable");
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const HarmonyImportSpecifierDependency = require("./HarmonyImportSpecifierDependency");
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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("../DependencyTemplate").DependencyTemplateContext} DependencyTemplateContext */
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/** @typedef {import("../Module").BuildMeta} BuildMeta */
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/** @typedef {import("../ModuleGraphConnection")} ModuleGraphConnection */
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/** @typedef {import("../javascript/JavascriptParser").ImportAttributes} ImportAttributes */
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/** @typedef {import("../javascript/JavascriptParser").Range} Range */
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/** @typedef {import("../serialization/ObjectMiddleware").ObjectDeserializerContext} ObjectDeserializerContext */
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/** @typedef {import("../serialization/ObjectMiddleware").ObjectSerializerContext} ObjectSerializerContext */
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/**
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 * Dependency for static evaluating import specifier. e.g.
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 * @example
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 * import a from "a";
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 * "x" in a;
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 * a.x !== undefined; // if x value statically analyzable
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 */
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class HarmonyEvaluatedImportSpecifierDependency extends HarmonyImportSpecifierDependency {
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	/**
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	 * @param {string} request the request string
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	 * @param {number} sourceOrder source order
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	 * @param {string[]} ids ids
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	 * @param {string} name name
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	 * @param {Range} range location in source code
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	 * @param {ImportAttributes} attributes import assertions
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	 * @param {string} operator operator
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	 */
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	constructor(request, sourceOrder, ids, name, range, attributes, operator) {
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		super(request, sourceOrder, ids, name, range, false, attributes, []);
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		this.operator = operator;
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	}
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	get type() {
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		return `evaluated X ${this.operator} harmony import specifier`;
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	}
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	/**
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	 * @param {ObjectSerializerContext} context context
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	 */
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	serialize(context) {
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		super.serialize(context);
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		const { write } = context;
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		write(this.operator);
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	}
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	/**
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	 * @param {ObjectDeserializerContext} context context
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	 */
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	deserialize(context) {
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		super.deserialize(context);
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		const { read } = context;
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		this.operator = read();
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	}
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}
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makeSerializable(
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	HarmonyEvaluatedImportSpecifierDependency,
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	"webpack/lib/dependencies/HarmonyEvaluatedImportSpecifierDependency"
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);
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HarmonyEvaluatedImportSpecifierDependency.Template = class HarmonyEvaluatedImportSpecifierDependencyTemplate extends (
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	HarmonyImportSpecifierDependency.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, templateContext) {
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		const dep =
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			/** @type {HarmonyEvaluatedImportSpecifierDependency} */
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			(dependency);
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		const { module, moduleGraph, runtime } = templateContext;
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		const connection = moduleGraph.getConnection(dep);
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		// Skip rendering depending when dependency is conditional
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		if (connection && !connection.isTargetActive(runtime)) return;
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		const exportsInfo = moduleGraph.getExportsInfo(
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			/** @type {ModuleGraphConnection} */ (connection).module
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		);
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		const ids = dep.getIds(moduleGraph);
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		let value;
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		const exportsType =
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			/** @type {ModuleGraphConnection} */
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			(connection).module.getExportsType(
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				moduleGraph,
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				/** @type {BuildMeta} */
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				(module.buildMeta).strictHarmonyModule
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			);
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		switch (exportsType) {
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			case "default-with-named": {
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				if (ids[0] === "default") {
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					value =
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						ids.length === 1 || exportsInfo.isExportProvided(ids.slice(1));
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				} else {
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					value = exportsInfo.isExportProvided(ids);
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				}
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				break;
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			}
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			case "namespace": {
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				value =
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					ids[0] === "__esModule"
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						? ids.length === 1 || undefined
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						: exportsInfo.isExportProvided(ids);
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				break;
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			}
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			case "dynamic": {
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				if (ids[0] !== "default") {
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					value = exportsInfo.isExportProvided(ids);
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				}
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				break;
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			}
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			// default-only could lead to runtime error, when default value is primitive
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		}
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		if (typeof value === "boolean") {
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			source.replace(dep.range[0], dep.range[1] - 1, ` ${value}`);
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		} else {
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			const usedName = exportsInfo.getUsedName(ids, runtime);
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			const code = this._getCodeForIds(
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				dep,
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				source,
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				templateContext,
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				ids.slice(0, -1)
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			);
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			source.replace(
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				dep.range[0],
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				dep.range[1] - 1,
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				`${
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					usedName ? JSON.stringify(usedName[usedName.length - 1]) : '""'
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				} in ${code}`
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			);
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		}
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	}
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};
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module.exports = HarmonyEvaluatedImportSpecifierDependency;
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