Optimize the ES6 template delimiter regexp and regexp to detect strings.

Former-commit-id: 6177f2b32f27515cf8edcac6036d0adb58ebfcd0

build.js

@@ -2413,8 +2413,8 @@
         });
       }
       else if (!isStdOut) {
-        outputUsed = true;
         filePath = outputPath || path.join(cwd, basename + '.js');
+        outputUsed = true;
         callback({
           'source': debugSource,
           'outputPath': filePath

build/pre-compile.js

@@ -233,7 +233,7 @@
     source = source.replace("result[length]['value']", 'result[length].value');
 
     // remove whitespace from string literals
-    source = source.replace(/^([ "'\w]+:)? *"(?:(?=(\\?))\2.)*?"|'(?:(?=(\\?))\3.)*?'/gm, function(string, captured) {
+    source = source.replace(/^([ "'\w]+:)? *"[^"\\\n]*(?:\\.[^"\\\n]*)*"|'[^'\\\n]*(?:\\.[^'\\\n]*)*'/gm, function(string, captured) {
       // remove object literal property name
       if (/:$/.test(captured)) {
         string = string.slice(captured.length);

lodash.js

@@ -55,7 +55,7 @@
    * Used to match ES6 template delimiters
    * http://people.mozilla.org/~jorendorff/es6-draft.html#sec-7.8.6
    */
-  var reEsTemplate = /\$\{((?:(?=\\?)\\?[\s\S])*?)\}/g;
+  var reEsTemplate = /\$\{([^\\}]*(?:\\.[^\\}]*)*)\}/g;
 
   /** Used to match "interpolate" template delimiters */
   var reInterpolate = /<%=([\s\S]+?)%>/g;