mirror of https://github.com/webpack/webpack.git
60 lines
2.2 KiB
JavaScript
60 lines
2.2 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 SystemImportDependency = require("./SystemImportDependency");
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var SystemImportContextDependency = require("./SystemImportContextDependency");
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var UnsupportedFeatureWarning = require("../UnsupportedFeatureWarning");
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var ConstDependency = require("./ConstDependency");
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var BasicEvaluatedExpression = require("../BasicEvaluatedExpression");
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var SystemImportParserPlugin = require("./SystemImportParserPlugin");
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function SystemPlugin(options) {
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this.options = options;
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}
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module.exports = SystemPlugin;
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SystemPlugin.prototype.apply = function(compiler) {
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function setTypeof(expr, value) {
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compiler.parser.plugin("evaluate typeof " + expr, function(expr) {
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return new BasicEvaluatedExpression().setString(value).setRange(expr.range);
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});
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compiler.parser.plugin("typeof " + expr, function(expr) {
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var dep = new ConstDependency(JSON.stringify(value), expr.range);
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dep.loc = expr.loc;
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this.state.current.addDependency(dep);
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return true;
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});
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}
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function setNotSupported(expr) {
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compiler.parser.plugin("expression " + expr, function(expr) {
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var dep = new ConstDependency("(void 0)", expr.range);
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dep.loc = expr.loc;
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this.state.current.addDependency(dep);
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if(!this.state.module) return;
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this.state.module.warnings.push(new UnsupportedFeatureWarning(this.state.module, expr + " is not supported by webpack."));
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return true;
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});
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}
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compiler.plugin("compilation", function(compilation, params) {
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var normalModuleFactory = params.normalModuleFactory;
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var contextModuleFactory = params.contextModuleFactory;
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compilation.dependencyFactories.set(SystemImportDependency, normalModuleFactory);
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compilation.dependencyTemplates.set(SystemImportDependency, new SystemImportDependency.Template());
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compilation.dependencyFactories.set(SystemImportContextDependency, contextModuleFactory);
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compilation.dependencyTemplates.set(SystemImportContextDependency, new SystemImportContextDependency.Template());
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});
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setTypeof("System", "object");
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setTypeof("System.import", "function");
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setNotSupported("System.set");
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setNotSupported("System.get");
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compiler.parser.apply(
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new SystemImportParserPlugin(this.options)
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);
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};
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