mirror of https://github.com/webpack/webpack.git
76 lines
2.2 KiB
JavaScript
76 lines
2.2 KiB
JavaScript
/*
|
|
MIT License http://www.opensource.org/licenses/mit-license.php
|
|
Author Sergey Melyukov @smelukov
|
|
*/
|
|
|
|
"use strict";
|
|
|
|
const {
|
|
JAVASCRIPT_MODULE_TYPE_AUTO,
|
|
JAVASCRIPT_MODULE_TYPE_DYNAMIC,
|
|
JAVASCRIPT_MODULE_TYPE_ESM
|
|
} = require("./ModuleTypeConstants");
|
|
const InnerGraph = require("./optimize/InnerGraph");
|
|
|
|
/** @typedef {import("./Compiler")} Compiler */
|
|
/** @typedef {import("./javascript/JavascriptParser")} JavascriptParser */
|
|
|
|
const PLUGIN_NAME = "JavascriptMetaInfoPlugin";
|
|
|
|
class JavascriptMetaInfoPlugin {
|
|
/**
|
|
* Apply the plugin
|
|
* @param {Compiler} compiler the compiler instance
|
|
* @returns {void}
|
|
*/
|
|
apply(compiler) {
|
|
compiler.hooks.compilation.tap(
|
|
PLUGIN_NAME,
|
|
(compilation, { normalModuleFactory }) => {
|
|
/**
|
|
* @param {JavascriptParser} parser the parser
|
|
* @returns {void}
|
|
*/
|
|
const handler = parser => {
|
|
parser.hooks.call.for("eval").tap(PLUGIN_NAME, () => {
|
|
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(PLUGIN_NAME, () => {
|
|
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_MODULE_TYPE_AUTO)
|
|
.tap(PLUGIN_NAME, handler);
|
|
normalModuleFactory.hooks.parser
|
|
.for(JAVASCRIPT_MODULE_TYPE_DYNAMIC)
|
|
.tap(PLUGIN_NAME, handler);
|
|
normalModuleFactory.hooks.parser
|
|
.for(JAVASCRIPT_MODULE_TYPE_ESM)
|
|
.tap(PLUGIN_NAME, handler);
|
|
}
|
|
);
|
|
}
|
|
}
|
|
|
|
module.exports = JavascriptMetaInfoPlugin;
|