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node_modules/webpack/lib/dependencies/HarmonyExportDependencyParserPlugin.js

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+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+const InnerGraph = require("../optimize/InnerGraph");
+const ConstDependency = require("./ConstDependency");
+const HarmonyExportExpressionDependency = require("./HarmonyExportExpressionDependency");
+const HarmonyExportHeaderDependency = require("./HarmonyExportHeaderDependency");
+const HarmonyExportImportedSpecifierDependency = require("./HarmonyExportImportedSpecifierDependency");
+const HarmonyExportSpecifierDependency = require("./HarmonyExportSpecifierDependency");
+const { ExportPresenceModes } = require("./HarmonyImportDependency");
+const {
+	harmonySpecifierTag,
+	getAssertions
+} = require("./HarmonyImportDependencyParserPlugin");
+const HarmonyImportSideEffectDependency = require("./HarmonyImportSideEffectDependency");
+
+/** @typedef {import("../javascript/JavascriptParser")} JavascriptParser */
+
+const { HarmonyStarExportsList } = HarmonyExportImportedSpecifierDependency;
+
+module.exports = class HarmonyExportDependencyParserPlugin {
+	/**
+	 * @param {import("../../declarations/WebpackOptions").JavascriptParserOptions} options options
+	 */
+	constructor(options) {
+		this.exportPresenceMode =
+			options.reexportExportsPresence !== undefined
+				? ExportPresenceModes.fromUserOption(options.reexportExportsPresence)
+				: options.exportsPresence !== undefined
+				? ExportPresenceModes.fromUserOption(options.exportsPresence)
+				: options.strictExportPresence
+				? ExportPresenceModes.ERROR
+				: ExportPresenceModes.AUTO;
+	}
+
+	apply(parser) {
+		const { exportPresenceMode } = this;
+		parser.hooks.export.tap(
+			"HarmonyExportDependencyParserPlugin",
+			statement => {
+				const dep = new HarmonyExportHeaderDependency(
+					statement.declaration && statement.declaration.range,
+					statement.range
+				);
+				dep.loc = Object.create(statement.loc);
+				dep.loc.index = -1;
+				parser.state.module.addPresentationalDependency(dep);
+				return true;
+			}
+		);
+		parser.hooks.exportImport.tap(
+			"HarmonyExportDependencyParserPlugin",
+			(statement, source) => {
+				parser.state.lastHarmonyImportOrder =
+					(parser.state.lastHarmonyImportOrder || 0) + 1;
+				const clearDep = new ConstDependency("", statement.range);
+				clearDep.loc = Object.create(statement.loc);
+				clearDep.loc.index = -1;
+				parser.state.module.addPresentationalDependency(clearDep);
+				const sideEffectDep = new HarmonyImportSideEffectDependency(
+					source,
+					parser.state.lastHarmonyImportOrder,
+					getAssertions(statement)
+				);
+				sideEffectDep.loc = Object.create(statement.loc);
+				sideEffectDep.loc.index = -1;
+				parser.state.current.addDependency(sideEffectDep);
+				return true;
+			}
+		);
+		parser.hooks.exportExpression.tap(
+			"HarmonyExportDependencyParserPlugin",
+			(statement, expr) => {
+				const isFunctionDeclaration = expr.type === "FunctionDeclaration";
+				const comments = parser.getComments([
+					statement.range[0],
+					expr.range[0]
+				]);
+				const dep = new HarmonyExportExpressionDependency(
+					expr.range,
+					statement.range,
+					comments
+						.map(c => {
+							switch (c.type) {
+								case "Block":
+									return `/*${c.value}*/`;
+								case "Line":
+									return `//${c.value}\n`;
+							}
+							return "";
+						})
+						.join(""),
+					expr.type.endsWith("Declaration") && expr.id
+						? expr.id.name
+						: isFunctionDeclaration
+						? {
+								id: expr.id ? expr.id.name : undefined,
+								range: [
+									expr.range[0],
+									expr.params.length > 0
+										? expr.params[0].range[0]
+										: expr.body.range[0]
+								],
+								prefix: `${expr.async ? "async " : ""}function${
+									expr.generator ? "*" : ""
+								} `,
+								suffix: `(${expr.params.length > 0 ? "" : ") "}`
+						  }
+						: undefined
+				);
+				dep.loc = Object.create(statement.loc);
+				dep.loc.index = -1;
+				parser.state.current.addDependency(dep);
+				InnerGraph.addVariableUsage(
+					parser,
+					expr.type.endsWith("Declaration") && expr.id
+						? expr.id.name
+						: "*default*",
+					"default"
+				);
+				return true;
+			}
+		);
+		parser.hooks.exportSpecifier.tap(
+			"HarmonyExportDependencyParserPlugin",
+			(statement, id, name, idx) => {
+				const settings = parser.getTagData(id, harmonySpecifierTag);
+				let dep;
+				const harmonyNamedExports = (parser.state.harmonyNamedExports =
+					parser.state.harmonyNamedExports || new Set());
+				harmonyNamedExports.add(name);
+				InnerGraph.addVariableUsage(parser, id, name);
+				if (settings) {
+					dep = new HarmonyExportImportedSpecifierDependency(
+						settings.source,
+						settings.sourceOrder,
+						settings.ids,
+						name,
+						harmonyNamedExports,
+						null,
+						exportPresenceMode,
+						null,
+						settings.assertions
+					);
+				} else {
+					dep = new HarmonyExportSpecifierDependency(id, name);
+				}
+				dep.loc = Object.create(statement.loc);
+				dep.loc.index = idx;
+				parser.state.current.addDependency(dep);
+				return true;
+			}
+		);
+		parser.hooks.exportImportSpecifier.tap(
+			"HarmonyExportDependencyParserPlugin",
+			(statement, source, id, name, idx) => {
+				const harmonyNamedExports = (parser.state.harmonyNamedExports =
+					parser.state.harmonyNamedExports || new Set());
+				let harmonyStarExports = null;
+				if (name) {
+					harmonyNamedExports.add(name);
+				} else {
+					harmonyStarExports = parser.state.harmonyStarExports =
+						parser.state.harmonyStarExports || new HarmonyStarExportsList();
+				}
+				const dep = new HarmonyExportImportedSpecifierDependency(
+					source,
+					parser.state.lastHarmonyImportOrder,
+					id ? [id] : [],
+					name,
+					harmonyNamedExports,
+					harmonyStarExports && harmonyStarExports.slice(),
+					exportPresenceMode,
+					harmonyStarExports
+				);
+				if (harmonyStarExports) {
+					harmonyStarExports.push(dep);
+				}
+				dep.loc = Object.create(statement.loc);
+				dep.loc.index = idx;
+				parser.state.current.addDependency(dep);
+				return true;
+			}
+		);
+	}
+};