forked from zhurui/management
86 lines
2.3 KiB
JavaScript
86 lines
2.3 KiB
JavaScript
/*
|
|
MIT License http://www.opensource.org/licenses/mit-license.php
|
|
Author Tobias Koppers @sokra
|
|
*/
|
|
"use strict";
|
|
|
|
const ParserHelpers = require("./ParserHelpers");
|
|
const ConstDependency = require("./dependencies/ConstDependency");
|
|
|
|
const NullFactory = require("./NullFactory");
|
|
|
|
class ProvidePlugin {
|
|
constructor(definitions) {
|
|
this.definitions = definitions;
|
|
}
|
|
|
|
apply(compiler) {
|
|
const definitions = this.definitions;
|
|
compiler.hooks.compilation.tap(
|
|
"ProvidePlugin",
|
|
(compilation, { normalModuleFactory }) => {
|
|
compilation.dependencyFactories.set(ConstDependency, new NullFactory());
|
|
compilation.dependencyTemplates.set(
|
|
ConstDependency,
|
|
new ConstDependency.Template()
|
|
);
|
|
const handler = (parser, parserOptions) => {
|
|
Object.keys(definitions).forEach(name => {
|
|
var request = [].concat(definitions[name]);
|
|
var splittedName = name.split(".");
|
|
if (splittedName.length > 0) {
|
|
splittedName.slice(1).forEach((_, i) => {
|
|
const name = splittedName.slice(0, i + 1).join(".");
|
|
parser.hooks.canRename
|
|
.for(name)
|
|
.tap("ProvidePlugin", ParserHelpers.approve);
|
|
});
|
|
}
|
|
parser.hooks.expression.for(name).tap("ProvidePlugin", expr => {
|
|
let nameIdentifier = name;
|
|
const scopedName = name.includes(".");
|
|
let expression = `require(${JSON.stringify(request[0])})`;
|
|
if (scopedName) {
|
|
nameIdentifier = `__webpack_provided_${name.replace(
|
|
/\./g,
|
|
"_dot_"
|
|
)}`;
|
|
}
|
|
if (request.length > 1) {
|
|
expression += request
|
|
.slice(1)
|
|
.map(r => `[${JSON.stringify(r)}]`)
|
|
.join("");
|
|
}
|
|
if (
|
|
!ParserHelpers.addParsedVariableToModule(
|
|
parser,
|
|
nameIdentifier,
|
|
expression
|
|
)
|
|
) {
|
|
return false;
|
|
}
|
|
if (scopedName) {
|
|
ParserHelpers.toConstantDependency(parser, nameIdentifier)(
|
|
expr
|
|
);
|
|
}
|
|
return true;
|
|
});
|
|
});
|
|
};
|
|
normalModuleFactory.hooks.parser
|
|
.for("javascript/auto")
|
|
.tap("ProvidePlugin", handler);
|
|
normalModuleFactory.hooks.parser
|
|
.for("javascript/dynamic")
|
|
.tap("ProvidePlugin", handler);
|
|
|
|
// Disable ProvidePlugin for javascript/esm, see https://github.com/webpack/webpack/issues/7032
|
|
}
|
|
);
|
|
}
|
|
}
|
|
module.exports = ProvidePlugin;
|