webpack/lib/dependencies/RequireContextDependencyParserPlugin.js

Packs CommonJs/AMD modules for the browser. Allows to split your codebase into multiple bundles, which can be loaded on demand. Support loaders to preprocess files, i.e. json, jade, coffee, css, less, ... and your custom stuff.

/*
	MIT License http://www.opensource.org/licenses/mit-license.php
	Author Tobias Koppers @sokra
*/
var AbstractPlugin = require("../AbstractPlugin");
var RequireContextDependency = require("./RequireContextDependency");

module.exports = AbstractPlugin.create({
	"call require.context": function(expr) {
		var regExp = /^\.\/.*$/;
		var recursive = true;
		switch(expr.arguments.length) {
		case 3:
			var regExpExpr = this.evaluateExpression(expr.arguments[2]);
			if(!regExpExpr.isRegExp()) return;
			regExp = regExpExpr.regExp;
			// fall through
		case 2:
			var recursiveExpr = this.evaluateExpression(expr.arguments[1]);
			if(!recursiveExpr.isBoolean()) return;
			recursive = recursiveExpr.bool;
			// fall through
		case 1:
			var requestExpr = this.evaluateExpression(expr.arguments[0]);
			if(!requestExpr.isString()) return;
			var dep = new RequireContextDependency(requestExpr.string, recursive, regExp, expr.range);
			dep.loc = expr.loc;
			dep.optional = this.scope.inTry;
			this.state.current.addDependency(dep);
			return true;
		}
	}
});