feat(minErr): set max depth for angular error JSON stringify

closes angular#15402

Author: m-amr

Diff for: src/Angular.js

@@ -815,9 +815,11 @@ function arrayRemove(array, value) {
     </file>
   </example>
  */
-function copy(source, destination) {
+function copy(source, destination, maxDepth) {
   var stackSource = [];
   var stackDest = [];
+  var currentDepth = 0;
+  maxDepth = (maxDepth && isNumber(maxDepth) && maxDepth > 0) ? maxDepth : -1;
 
   if (destination) {
     if (isTypedArray(destination) || isArrayBuffer(destination)) {
@@ -840,43 +842,48 @@ function copy(source, destination) {
 
     stackSource.push(source);
     stackDest.push(destination);
-    return copyRecurse(source, destination);
+    return copyRecurse(source, destination, currentDepth);
   }
 
-  return copyElement(source);
+  return copyElement(source, currentDepth);
+
+  function copyRecurse(source, destination, currentDepth) {
+    currentDepth++;
+    if (maxDepth !== -1 && currentDepth > maxDepth) {
+      return typeof source;
+    }
 
-  function copyRecurse(source, destination) {
     var h = destination.$$hashKey;
     var key;
     if (isArray(source)) {
       for (var i = 0, ii = source.length; i < ii; i++) {
-        destination.push(copyElement(source[i]));
+        destination.push(copyElement(source[i], currentDepth));
       }
     } else if (isBlankObject(source)) {
       // createMap() fast path --- Safe to avoid hasOwnProperty check because prototype chain is empty
       for (key in source) {
-        destination[key] = copyElement(source[key]);
+        destination[key] = copyElement(source[key], currentDepth);
       }
     } else if (source && typeof source.hasOwnProperty === 'function') {
       // Slow path, which must rely on hasOwnProperty
       for (key in source) {
         if (source.hasOwnProperty(key)) {
-          destination[key] = copyElement(source[key]);
+          destination[key] = copyElement(source[key], currentDepth);
         }
       }
     } else {
       // Slowest path --- hasOwnProperty can't be called as a method
       for (key in source) {
         if (hasOwnProperty.call(source, key)) {
-          destination[key] = copyElement(source[key]);
+          destination[key] = copyElement(source[key], currentDepth);
         }
       }
     }
     setHashKey(destination, h);
     return destination;
   }
 
-  function copyElement(source) {
+  function copyElement(source, currentDepth) {
     // Simple values
     if (!isObject(source)) {
       return source;
@@ -905,7 +912,7 @@ function copy(source, destination) {
     stackDest.push(destination);
 
     return needsRecurse
-      ? copyRecurse(source, destination)
+      ? copyRecurse(source, destination, currentDepth)
       : destination;
   }
 

Diff for: src/minErr.js

@@ -34,6 +34,7 @@ function minErr(module, ErrorConstructor) {
   ErrorConstructor = ErrorConstructor || Error;
   return function() {
     var SKIP_INDEXES = 2;
+    var MAX_DEPTH = 1;
 
     var templateArgs = arguments,
       code = templateArgs[0],
@@ -46,7 +47,7 @@ function minErr(module, ErrorConstructor) {
         shiftedIndex = index + SKIP_INDEXES;
 
       if (shiftedIndex < templateArgs.length) {
-        return toDebugString(templateArgs[shiftedIndex]);
+        return toDebugString(templateArgs[shiftedIndex], MAX_DEPTH);
       }
 
       return match;
@@ -57,7 +58,7 @@ function minErr(module, ErrorConstructor) {
 
     for (i = SKIP_INDEXES, paramPrefix = '?'; i < templateArgs.length; i++, paramPrefix = '&') {
       message += paramPrefix + 'p' + (i - SKIP_INDEXES) + '=' +
-        encodeURIComponent(toDebugString(templateArgs[i]));
+        encodeURIComponent(toDebugString(templateArgs[i]), MAX_DEPTH);
     }
 
     return new ErrorConstructor(message);

Diff for: src/stringify.js

@@ -2,10 +2,16 @@
 
 /* global toDebugString: true */
 
-function serializeObject(obj) {
+function serializeObject(obj, maxDepth) {
   var seen = [];
+  var tempObj = {};
+  if (maxDepth && isNumber(maxDepth) && maxDepth > 0) {
+    copy(obj, tempObj, maxDepth)
+  } else {
+    tempObj = obj;
+  }
 
-  return JSON.stringify(obj, function(key, val) {
+  return JSON.stringify(tempObj, function(key, val) {
     val = toJsonReplacer(key, val);
     if (isObject(val)) {
 
@@ -17,13 +23,13 @@ function serializeObject(obj) {
   });
 }
 
-function toDebugString(obj) {
+function toDebugString(obj, maxDepth) {
   if (typeof obj === 'function') {
     return obj.toString().replace(/ \{[\s\S]*$/, '');
   } else if (isUndefined(obj)) {
     return 'undefined';
   } else if (typeof obj !== 'string') {
-    return serializeObject(obj);
+    return serializeObject(obj, maxDepth);
   }
   return obj;
 }