Files F117898844

JavascriptMetaInfoPlugin.js
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Created: Mon, Jun 16, 11:02

JavascriptMetaInfoPlugin.js
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	/*
	MIT License http://www.opensource.org/licenses/mit-license.php
	Author Sergey Melyukov @smelukov
	*/

	"use strict";

	const InnerGraph = require("./optimize/InnerGraph");

	/** @typedef {import("./Compiler")} Compiler */
	/** @typedef {import("./javascript/JavascriptParser")} JavascriptParser */

	class JavascriptMetaInfoPlugin {
	/**
	* Apply the plugin
	* @param {Compiler} compiler the compiler instance
	* @returns {void}
	*/
	apply(compiler) {
	compiler.hooks.compilation.tap(
	"JavascriptMetaInfoPlugin",
	(compilation, { normalModuleFactory }) => {
	/**
	* @param {JavascriptParser} parser the parser
	* @returns {void}
	*/
	const handler = parser => {
	parser.hooks.call.for("eval").tap("JavascriptMetaInfoPlugin", () => {
	parser.state.module.buildInfo.moduleConcatenationBailout = "eval()";
	parser.state.module.buildInfo.usingEval = true;
	const currentSymbol = InnerGraph.getTopLevelSymbol(parser.state);
	if (currentSymbol) {
	InnerGraph.addUsage(parser.state, null, currentSymbol);
	} else {
	InnerGraph.bailout(parser.state);
	}
	});
	parser.hooks.finish.tap("JavascriptMetaInfoPlugin", () => {
	let topLevelDeclarations =
	parser.state.module.buildInfo.topLevelDeclarations;
	if (topLevelDeclarations === undefined) {
	topLevelDeclarations =
	parser.state.module.buildInfo.topLevelDeclarations = new Set();
	}
	for (const name of parser.scope.definitions.asSet()) {
	const freeInfo = parser.getFreeInfoFromVariable(name);
	if (freeInfo === undefined) {
	topLevelDeclarations.add(name);
	}
	}
	});
	};

	normalModuleFactory.hooks.parser
	.for("javascript/auto")
	.tap("JavascriptMetaInfoPlugin", handler);
	normalModuleFactory.hooks.parser
	.for("javascript/dynamic")
	.tap("JavascriptMetaInfoPlugin", handler);
	normalModuleFactory.hooks.parser
	.for("javascript/esm")
	.tap("JavascriptMetaInfoPlugin", handler);
	}
	);
	}
	}

	module.exports = JavascriptMetaInfoPlugin;

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