ExtendedAPIPlugin.js
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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const Template = require("./Template");
const ConstDependency = require("./dependencies/ConstDependency");
const ParserHelpers = require("./ParserHelpers");
const NullFactory = require("./NullFactory");
const REPLACEMENTS = {
// eslint-disable-next-line camelcase
__webpack_hash__: "__webpack_require__.h",
// eslint-disable-next-line camelcase
__webpack_chunkname__: "__webpack_require__.cn"
};
const REPLACEMENT_TYPES = {
// eslint-disable-next-line camelcase
__webpack_hash__: "string",
// eslint-disable-next-line camelcase
__webpack_chunkname__: "string"
};
class ExtendedAPIPlugin {
apply(compiler) {
compiler.hooks.compilation.tap(
"ExtendedAPIPlugin",
(compilation, { normalModuleFactory }) => {
compilation.dependencyFactories.set(ConstDependency, new NullFactory());
compilation.dependencyTemplates.set(
ConstDependency,
new ConstDependency.Template()
);
const mainTemplate = compilation.mainTemplate;
mainTemplate.hooks.requireExtensions.tap(
"ExtendedAPIPlugin",
(source, chunk, hash) => {
const buf = [source];
buf.push("");
buf.push("// __webpack_hash__");
buf.push(`${mainTemplate.requireFn}.h = ${JSON.stringify(hash)};`);
buf.push("");
buf.push("// __webpack_chunkname__");
buf.push(
`${mainTemplate.requireFn}.cn = ${JSON.stringify(chunk.name)};`
);
return Template.asString(buf);
}
);
mainTemplate.hooks.globalHash.tap("ExtendedAPIPlugin", () => true);
const handler = (parser, parserOptions) => {
Object.keys(REPLACEMENTS).forEach(key => {
parser.hooks.expression
.for(key)
.tap(
"ExtendedAPIPlugin",
ParserHelpers.toConstantDependencyWithWebpackRequire(
parser,
REPLACEMENTS[key]
)
);
parser.hooks.evaluateTypeof
.for(key)
.tap(
"ExtendedAPIPlugin",
ParserHelpers.evaluateToString(REPLACEMENT_TYPES[key])
);
});
};
normalModuleFactory.hooks.parser
.for("javascript/auto")
.tap("ExtendedAPIPlugin", handler);
normalModuleFactory.hooks.parser
.for("javascript/dynamic")
.tap("ExtendedAPIPlugin", handler);
normalModuleFactory.hooks.parser
.for("javascript/esm")
.tap("ExtendedAPIPlugin", handler);
}
);
}
}
module.exports = ExtendedAPIPlugin;