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69 lines
2.0 KiB
69 lines
2.0 KiB
3 years ago
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/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Sergey Melyukov @smelukov
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*/
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"use strict";
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const InnerGraph = require("./optimize/InnerGraph");
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/** @typedef {import("./Compiler")} Compiler */
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/** @typedef {import("./javascript/JavascriptParser")} JavascriptParser */
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class JavascriptMetaInfoPlugin {
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/**
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* Apply the plugin
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* @param {Compiler} compiler the compiler instance
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* @returns {void}
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*/
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apply(compiler) {
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compiler.hooks.compilation.tap(
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"JavascriptMetaInfoPlugin",
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(compilation, { normalModuleFactory }) => {
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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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const handler = parser => {
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parser.hooks.call.for("eval").tap("JavascriptMetaInfoPlugin", () => {
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parser.state.module.buildInfo.moduleConcatenationBailout = "eval()";
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parser.state.module.buildInfo.usingEval = true;
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const currentSymbol = InnerGraph.getTopLevelSymbol(parser.state);
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if (currentSymbol) {
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InnerGraph.addUsage(parser.state, null, currentSymbol);
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} else {
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InnerGraph.bailout(parser.state);
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}
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});
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parser.hooks.finish.tap("JavascriptMetaInfoPlugin", () => {
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let topLevelDeclarations =
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parser.state.module.buildInfo.topLevelDeclarations;
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if (topLevelDeclarations === undefined) {
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topLevelDeclarations =
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parser.state.module.buildInfo.topLevelDeclarations = new Set();
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}
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for (const name of parser.scope.definitions.asSet()) {
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const freeInfo = parser.getFreeInfoFromVariable(name);
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if (freeInfo === undefined) {
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topLevelDeclarations.add(name);
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}
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}
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});
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};
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normalModuleFactory.hooks.parser
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.for("javascript/auto")
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.tap("JavascriptMetaInfoPlugin", handler);
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normalModuleFactory.hooks.parser
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.for("javascript/dynamic")
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.tap("JavascriptMetaInfoPlugin", handler);
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normalModuleFactory.hooks.parser
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.for("javascript/esm")
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.tap("JavascriptMetaInfoPlugin", handler);
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}
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);
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}
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}
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module.exports = JavascriptMetaInfoPlugin;
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