expose require.cache and require.resolve, fixes #4

lib/parse.js

@@ -194,6 +194,7 @@ function walkExpression(context, expression) {
 			expression.arguments.length == 1 &&
 			expression.callee.type === "Identifier" &&
 			expression.callee.name === "require") {
+			// "require(...)"
 			var param = parseCalculatedString(expression.arguments[0]);
 			if(param.conditional) {
 				context.requires = context.requires || [];
@@ -252,6 +253,7 @@ function walkExpression(context, expression) {
 			expression.callee.object.name === "require" &&
 			expression.callee.property.type === "Identifier" &&
 			{async:1, ensure:1}.hasOwnProperty(expression.callee.property.name)) {
+			// "require.ensure(...)" or "require.async(...)"
 			var param = parseStringArray(expression.arguments[0]);
 			var newContext = {
 				requires: [],
@@ -292,6 +294,7 @@ function walkExpression(context, expression) {
 			expression.callee.object.name === "require" &&
 			expression.callee.property.type === "Identifier" &&
 			expression.callee.property.name === "context") {
+			// "require.context(...)"
 			var param = parseString(expression.arguments[0]);
 			context.contexts = context.contexts || [];
 			var newContext = {
@@ -304,12 +307,37 @@ function walkExpression(context, expression) {
 			noCallee = true;
 		}
 		if(context.overwrite.indexOf("require") === -1 &&
-			expression.callee &&
+			expression.callee && expression.arguments &&
+			expression.arguments.length == 1 &&
 			expression.callee.type === "MemberExpression" &&
 			expression.callee.object.type === "Identifier" &&
 			expression.callee.object.name === "require" &&
 			expression.callee.property.type === "Identifier" &&
-			expression.callee.property.name === "valueOf") {
+			expression.callee.property.name === "resolve") {
+			// "require.resolve(...)"
+			var param = parseCalculatedString(expression.arguments[0]);
+			if(param.conditional) {
+				context.requires = context.requires || [];
+				param.conditional.forEach(function(paramItem, idx) {
+					context.requires.push({
+						name: paramItem.value,
+						valueRange: paramItem.range,
+						deleteRange: idx === 0 ? expression.callee.range : undefined,
+						line: expression.loc.start.line,
+						column: expression.loc.start.column
+					});
+				});
+			} else {
+				// normal require
+				context.requires = context.requires || [];
+				context.requires.push({
+					name: param.value,
+					expressionRange: [expression.callee.range[0], expression.range[1]],
+					idOnly: true,
+					line: expression.loc.start.line,
+					column: expression.loc.start.column
+				});
+			}
 			noCallee = true;
 		}
 
@@ -324,6 +352,11 @@ function walkExpression(context, expression) {
 			expression.property.type === "Identifier" &&
 			expression.property.name === "exports")
 			break;
+		if(expression.object.type === "Identifier" &&
+			expression.object.name === "require" &&
+			expression.property.type === "Identifier" &&
+			{valueOf:1, cache:1, modules:1}.hasOwnProperty(expression.property.name))
+			break;
 		walkExpression(context, expression.object);
 		if(expression.property.type !== "Identifier")
 			walkExpression(context, expression.property);

lib/writeSource.js

@@ -42,7 +42,7 @@ module.exports = function(module, options, toRealId, toRealChuckId) {
 					replaces.push({
 						from: requireItem.expressionRange[0],
 						to: requireItem.expressionRange[1],
-						value: "require(" + prefix + toRealId(requireItem.id) + ")" + (requireItem.append || "")
+						value: (requireItem.idOnly ? "" : "require") + "(" + prefix + toRealId(requireItem.id) + ")" + (requireItem.append || "")
 					});
 				} else if(requireItem.valueRange) {
 					replaces.push({
@@ -50,6 +50,13 @@ module.exports = function(module, options, toRealId, toRealChuckId) {
 						to: requireItem.valueRange[1],
 						value: prefix + toRealId(requireItem.id)
 					});
+					if(requireItem.deleteRange) {
+						replaces.push({
+							from: requireItem.deleteRange[0],
+							to: requireItem.deleteRange[1],
+							value: ""
+						});
+					}
 				} else if(requireItem.variable) {
 					if(!freeVars[requireItem.variable]) {
 						freeVars[requireItem.variable] = requireItem;

templates/browserAsync.js

@@ -26,6 +26,7 @@
 /******/			}
 /******/		};
 /******/		require.modules = modules;
+/******/		require.cache = installedModules;
 /******/		window[modules.b] = function(chunkId, moreModules) {
 /******/			for(var moduleId in moreModules)
 /******/				modules[moduleId] = moreModules[moduleId];

templates/browserSingle.js

@@ -14,5 +14,6 @@
 /******/		callback(require);
 /******/	};
 /******/	require.modules = modules;
+/******/	require.cache = installedModules;
 /******/	return require(0);
 /******/})

test/browsertest/lib/index.web.js

@@ -146,6 +146,16 @@ var abc = "abc", scr = "script.coffee";
 window.test(require("../resources/" + scr) === "coffee test", "context should process extensions");
 window.test(require("raw!../resources/" + abc + ".txt") === "abc", "raw loader with context");
 
+// require behavior
+var singlarObj = require("./singluar2");
+var singlarId = require.resolve("./singluar2");
+var singlarIdInConditional = require.resolve(true ? "./singluar2" : "./singluar");
+window.test(typeof singlarId == "number", "require.resolve returns a id");
+window.test(singlarIdInConditional === singlarId, "require.resolve returns a id if in conditional");
+window.test(typeof require.cache[singlarId] == "object", "require.cache can be read");
+delete require.cache[singlarId];
+window.test(require("./singluar2") !== singlarObj, "require.cache can be deleted");
+
 
 // Tests from node.js
 require("bundle!../nodetests");