244 lines
		
	
	
		
			8.2 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			244 lines
		
	
	
		
			8.2 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 WebpackError = require("../WebpackError");
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const { getImportAttributes } = require("../javascript/JavascriptParser");
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const InnerGraph = require("../optimize/InnerGraph");
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const ConstDependency = require("./ConstDependency");
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const HarmonyExportExpressionDependency = require("./HarmonyExportExpressionDependency");
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const HarmonyExportHeaderDependency = require("./HarmonyExportHeaderDependency");
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const HarmonyExportImportedSpecifierDependency = require("./HarmonyExportImportedSpecifierDependency");
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const HarmonyExportSpecifierDependency = require("./HarmonyExportSpecifierDependency");
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const { ExportPresenceModes } = require("./HarmonyImportDependency");
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const {
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	getImportMode,
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	harmonySpecifierTag
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} = require("./HarmonyImportDependencyParserPlugin");
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const HarmonyImportSideEffectDependency = require("./HarmonyImportSideEffectDependency");
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/** @typedef {import("../Dependency").DependencyLocation} DependencyLocation */
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/** @typedef {import("../javascript/JavascriptParser")} JavascriptParser */
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/** @typedef {import("../javascript/JavascriptParser").ClassDeclaration} ClassDeclaration */
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/** @typedef {import("../javascript/JavascriptParser").FunctionDeclaration} FunctionDeclaration */
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/** @typedef {import("../javascript/JavascriptParser").Range} Range */
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const { HarmonyStarExportsList } = HarmonyExportImportedSpecifierDependency;
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const PLUGIN_NAME = "HarmonyExportDependencyParserPlugin";
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module.exports = class HarmonyExportDependencyParserPlugin {
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	/**
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	 * @param {import("../../declarations/WebpackOptions").JavascriptParserOptions} options options
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	 */
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	constructor(options) {
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		this.exportPresenceMode =
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			options.reexportExportsPresence !== undefined
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				? ExportPresenceModes.fromUserOption(options.reexportExportsPresence)
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				: options.exportsPresence !== undefined
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					? ExportPresenceModes.fromUserOption(options.exportsPresence)
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					: options.strictExportPresence
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						? ExportPresenceModes.ERROR
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						: ExportPresenceModes.AUTO;
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		this.deferImport = options.deferImport;
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	}
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	/**
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	 * @param {JavascriptParser} parser the parser
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	 * @returns {void}
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	 */
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	apply(parser) {
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		const { exportPresenceMode } = this;
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		parser.hooks.export.tap(PLUGIN_NAME, (statement) => {
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			const dep = new HarmonyExportHeaderDependency(
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				/** @type {Range | false} */ (
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					statement.declaration && statement.declaration.range
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				),
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				/** @type {Range} */ (statement.range)
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			);
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			dep.loc = Object.create(
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				/** @type {DependencyLocation} */ (statement.loc)
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			);
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			dep.loc.index = -1;
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			parser.state.module.addPresentationalDependency(dep);
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			return true;
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		});
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		parser.hooks.exportImport.tap(PLUGIN_NAME, (statement, source) => {
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			parser.state.lastHarmonyImportOrder =
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				(parser.state.lastHarmonyImportOrder || 0) + 1;
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			const clearDep = new ConstDependency(
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				"",
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				/** @type {Range} */ (statement.range)
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			);
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			clearDep.loc = /** @type {DependencyLocation} */ (statement.loc);
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			clearDep.loc.index = -1;
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			parser.state.module.addPresentationalDependency(clearDep);
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			let defer = false;
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			if (this.deferImport) {
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				({ defer } = getImportMode(parser, statement));
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				if (defer) {
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					const error = new WebpackError(
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						"Deferred re-export (`export defer * as namespace from '...'`) is not a part of the Import Defer proposal.\nUse the following code instead:\n    import defer * as namespace from '...';\n    export { namespace };"
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					);
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					error.loc = statement.loc || undefined;
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					parser.state.current.addError(error);
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				}
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			}
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			const sideEffectDep = new HarmonyImportSideEffectDependency(
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				/** @type {string} */ (source),
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				parser.state.lastHarmonyImportOrder,
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				getImportAttributes(statement),
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				defer
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			);
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			sideEffectDep.loc = Object.create(
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				/** @type {DependencyLocation} */ (statement.loc)
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			);
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			sideEffectDep.loc.index = -1;
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			parser.state.current.addDependency(sideEffectDep);
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			return true;
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		});
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		parser.hooks.exportExpression.tap(PLUGIN_NAME, (statement, node) => {
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			const isFunctionDeclaration = node.type === "FunctionDeclaration";
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			const exprRange = /** @type {Range} */ (node.range);
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			const statementRange = /** @type {Range} */ (statement.range);
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			const comments = parser.getComments([statementRange[0], exprRange[0]]);
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			const dep = new HarmonyExportExpressionDependency(
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				exprRange,
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				statementRange,
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				comments
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					.map((c) => {
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						switch (c.type) {
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							case "Block":
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								return `/*${c.value}*/`;
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							case "Line":
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								return `//${c.value}\n`;
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						}
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						return "";
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					})
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					.join(""),
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				node.type.endsWith("Declaration") &&
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				/** @type {FunctionDeclaration | ClassDeclaration} */ (node).id
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					? /** @type {FunctionDeclaration | ClassDeclaration} */
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						(node).id.name
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					: isFunctionDeclaration
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						? {
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								range: [
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									exprRange[0],
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									node.params.length > 0
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										? /** @type {Range} */ (node.params[0].range)[0]
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										: /** @type {Range} */ (node.body.range)[0]
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								],
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								prefix: `${node.async ? "async " : ""}function${
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									node.generator ? "*" : ""
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								} `,
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								suffix: `(${node.params.length > 0 ? "" : ") "}`
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							}
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						: undefined
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			);
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			dep.loc = Object.create(
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				/** @type {DependencyLocation} */ (statement.loc)
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			);
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			dep.loc.index = -1;
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			parser.state.current.addDependency(dep);
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			InnerGraph.addVariableUsage(
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				parser,
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				node.type.endsWith("Declaration") &&
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					/** @type {FunctionDeclaration | ClassDeclaration} */ (node).id
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					? /** @type {FunctionDeclaration | ClassDeclaration} */ (node).id.name
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					: "*default*",
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				"default"
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			);
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			return true;
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		});
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		parser.hooks.exportSpecifier.tap(
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			PLUGIN_NAME,
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			(statement, id, name, idx) => {
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				const settings = parser.getTagData(id, harmonySpecifierTag);
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				const harmonyNamedExports = (parser.state.harmonyNamedExports =
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					parser.state.harmonyNamedExports || new Set());
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				harmonyNamedExports.add(name);
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				InnerGraph.addVariableUsage(parser, id, name);
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				const dep = settings
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					? new HarmonyExportImportedSpecifierDependency(
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							settings.source,
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							settings.sourceOrder,
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							settings.ids,
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							name,
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							harmonyNamedExports,
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							null,
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							exportPresenceMode,
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							null,
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							settings.attributes,
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							settings.defer
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						)
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					: new HarmonyExportSpecifierDependency(id, name);
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				dep.loc = Object.create(
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					/** @type {DependencyLocation} */ (statement.loc)
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				);
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				dep.loc.index = idx;
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				const isAsiSafe = !parser.isAsiPosition(
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					/** @type {Range} */
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					(statement.range)[0]
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				);
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				if (!isAsiSafe) {
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					parser.setAsiPosition(/** @type {Range} */ (statement.range)[1]);
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				}
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				parser.state.current.addDependency(dep);
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				return true;
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			}
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		);
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		parser.hooks.exportImportSpecifier.tap(
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			PLUGIN_NAME,
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			(statement, source, id, name, idx) => {
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				const harmonyNamedExports = (parser.state.harmonyNamedExports =
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					parser.state.harmonyNamedExports || new Set());
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				/** @type {InstanceType<HarmonyStarExportsList> | null} */
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				let harmonyStarExports = null;
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				if (name) {
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					harmonyNamedExports.add(name);
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				} else {
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					harmonyStarExports = parser.state.harmonyStarExports =
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						parser.state.harmonyStarExports || new HarmonyStarExportsList();
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				}
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				const attributes = getImportAttributes(statement);
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				const defer = this.deferImport
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					? getImportMode(parser, statement).defer
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					: false;
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				const dep = new HarmonyExportImportedSpecifierDependency(
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					/** @type {string} */
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					(source),
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					parser.state.lastHarmonyImportOrder,
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					id ? [id] : [],
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					name,
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					harmonyNamedExports,
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					// eslint-disable-next-line unicorn/prefer-spread
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					harmonyStarExports && harmonyStarExports.slice(),
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					exportPresenceMode,
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					harmonyStarExports,
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					attributes,
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					defer
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				);
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				if (harmonyStarExports) {
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					harmonyStarExports.push(dep);
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				}
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				dep.loc = Object.create(
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					/** @type {DependencyLocation} */ (statement.loc)
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				);
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				dep.loc.index = idx;
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				const isAsiSafe = !parser.isAsiPosition(
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					/** @type {Range} */
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					(statement.range)[0]
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				);
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				if (!isAsiSafe) {
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					parser.setAsiPosition(/** @type {Range} */ (statement.range)[1]);
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				}
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				parser.state.current.addDependency(dep);
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				return true;
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			}
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		);
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	}
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};
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