ExportsInfoApiPlugin.js
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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const ConstDependency = require("./dependencies/ConstDependency");
const ExportsInfoDependency = require("./dependencies/ExportsInfoDependency");
/** @typedef {import("./Compiler")} Compiler */
/** @typedef {import("./javascript/JavascriptParser")} JavascriptParser */
class ExportsInfoApiPlugin {
/**
* Apply the plugin
* @param {Compiler} compiler the compiler instance
* @returns {void}
*/
apply(compiler) {
compiler.hooks.compilation.tap(
"ExportsInfoApiPlugin",
(compilation, { normalModuleFactory }) => {
compilation.dependencyTemplates.set(
ExportsInfoDependency,
new ExportsInfoDependency.Template()
);
/**
* @param {JavascriptParser} parser the parser
* @returns {void}
*/
const handler = parser => {
parser.hooks.expressionMemberChain
.for("__webpack_exports_info__")
.tap("ExportsInfoApiPlugin", (expr, members) => {
const dep =
members.length >= 2
? new ExportsInfoDependency(
expr.range,
members.slice(0, -1),
members[members.length - 1]
)
: new ExportsInfoDependency(expr.range, null, members[0]);
dep.loc = expr.loc;
parser.state.module.addDependency(dep);
return true;
});
parser.hooks.expression
.for("__webpack_exports_info__")
.tap("ExportsInfoApiPlugin", expr => {
const dep = new ConstDependency("true", expr.range);
dep.loc = expr.loc;
parser.state.module.addPresentationalDependency(dep);
return true;
});
};
normalModuleFactory.hooks.parser
.for("javascript/auto")
.tap("ExportsInfoApiPlugin", handler);
normalModuleFactory.hooks.parser
.for("javascript/dynamic")
.tap("ExportsInfoApiPlugin", handler);
normalModuleFactory.hooks.parser
.for("javascript/esm")
.tap("ExportsInfoApiPlugin", handler);
}
);
}
}
module.exports = ExportsInfoApiPlugin;