fixed #627

lib/dependencies/CommonJsRequireDependencyParserPlugin.js

@@ -37,15 +37,22 @@ CommonJsRequireDependencyParserPlugin.prototype.apply = function(parser) {
 		var localModule;
 		var param = this.evaluateExpression(expr.arguments[0]);
 		if(param.isConditional()) {
+			var isExpression = false;
+			var prevLength = this.state.current.dependencies.length;
 			this.state.current.addDependency(new RequireHeaderDependency(expr.callee.range));
 			param.options.forEach(function(param) {
 				var result = this.applyPluginsBailResult("call require:commonjs:item", expr, param);
 				if(result === undefined) {
-					throw new Error("Cannot convert options with mixed known and unknown stuff");
+					isExpression = true;
 				}
 			}, this);
+			if(isExpression) {
+				this.state.current.dependencies.length = prevLength;
+			} else {
 				return true;
-		} else if(param.isString() && (localModule = LocalModulesHelpers.getLocalModule(this.state, param.string))) {
+			}
+		}
+		if(param.isString() && (localModule = LocalModulesHelpers.getLocalModule(this.state, param.string))) {
 			var dep = new LocalModuleDependency(localModule, expr.range);
 			dep.loc = expr.loc;
 			this.state.current.addDependency(dep);

test/cases/parsing/issue-627/dir/test.js

@@ -0,0 +1,4 @@
+(function() {
+	var expr1 = "a", expr2 = "b";
+	require(Math.random() < 0.5 ? expr1 : expr2);
+}).should.throw();

test/cases/parsing/issue-627/index.js

@@ -0,0 +1,3 @@
+it("should compile expr in ?: operator", function() {
+	require("./dir/test");
+});

test/cases/parsing/issue-627/warnings.js

@@ -0,0 +1,3 @@
+module.exports = [
+	[/Critical dependencies/]
+];