mirror of https://github.com/webpack/webpack.git
57 lines
1.9 KiB
JavaScript
57 lines
1.9 KiB
JavaScript
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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var ModuleParserHelpers = require("./ModuleParserHelpers");
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var ConstDependency = require("./dependencies/ConstDependency");
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var NullFactory = require("./NullFactory");
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function ProvidePlugin(definitions) {
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this.definitions = definitions;
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}
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module.exports = ProvidePlugin;
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ProvidePlugin.prototype.apply = function(compiler) {
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var definitions = this.definitions;
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compiler.plugin("compilation", function(compilation, params) {
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compilation.dependencyFactories.set(ConstDependency, new NullFactory());
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compilation.dependencyTemplates.set(ConstDependency, new ConstDependency.Template());
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params.normalModuleFactory.plugin("parser", function(parser, parserOptions) {
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Object.keys(definitions).forEach(function(name) {
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var request = [].concat(definitions[name]);
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var splittedName = name.split(".");
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if(splittedName.length > 0) {
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splittedName.slice(1).forEach(function(_, i) {
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var name = splittedName.slice(0, i + 1).join(".");
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parser.plugin("can-rename " + name, function() {
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return true;
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});
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});
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}
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parser.plugin("expression " + name, function(expr) {
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var nameIdentifier = name;
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var scopedName = name.indexOf(".") >= 0;
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var expression = "require(" + JSON.stringify(request[0]) + ")";
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if(scopedName) {
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nameIdentifier = "__webpack_provided_" + name.replace(/\./g, "_dot_");
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}
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if(request.length > 1) {
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expression += request.slice(1).map(function(r) {
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return "[" + JSON.stringify(r) + "]";
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}).join("");
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}
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if(!ModuleParserHelpers.addParsedVariable(this, nameIdentifier, expression)) {
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return false;
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}
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if(scopedName) {
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var dep = new ConstDependency(nameIdentifier, expr.range);
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dep.loc = expr.loc;
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this.state.current.addDependency(dep);
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}
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return true;
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});
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});
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});
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});
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};
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