Stack trace for asserts shouldn't include assert module

lib/assert.js

@@ -35,26 +35,16 @@ var assert = exports;
 // 2. The AssertionError is defined in assert.
 // new assert.AssertionError({message: message, actual: actual, expected: expected})
 
-assert.AssertionError = function AssertionError(options) {
+assert.AssertionError = function AssertionError (options) {
   this.name = "AssertionError";
   this.message = options.message;
   this.actual = options.actual;
   this.expected = options.expected;
   this.operator = options.operator;
+  var stackStartFunction = options.stackStartFunction || fail;
 
-  //v8 specific
   if (Error.captureStackTrace) {
-    Error.captureStackTrace(this, fail);
+    Error.captureStackTrace(this, stackStartFunction);
-    //node specific, removes the node machinery stack frames
-    if (typeof(__filename) !== undefined) {
-      var stack = this.stack.split('\n');
-      for (var i = stack.length - 1; i >= 0; i--) {
-        if (stack[i].indexOf(__filename) != -1) {
-          this.stack = stack.slice(0, i+2).join('\n');
-          break;
-        }
-      }
-    }
   }
 };
 
@@ -85,12 +75,13 @@ assert.AssertionError.__proto__ = Error.prototype;
 // both the actual and expected values to the assertion error for
 // display purposes.
 
-function fail(actual, expected, message, operator) {
+function fail(actual, expected, message, operator, stackStartFunction) {
   throw new assert.AssertionError({
     message: message,
     actual: actual,
     expected: expected,
-    operator: operator
+    operator: operator,
+    stackStartFunction: stackStartFunction
   });
 }
 
@@ -105,7 +96,7 @@ assert.fail = fail;
 // assert.strictEqual(true, guard, message_opt);.
 
 assert.ok = function ok(value, message) {
-  if (!!!value) fail(value, true, message, "==");
+  if (!!!value) fail(value, true, message, "==", assert.ok);
 };
 
 // 5. The equality assertion tests shallow, coercive equality with
@@ -113,22 +104,24 @@ assert.ok = function ok(value, message) {
 // assert.equal(actual, expected, message_opt);
 
 assert.equal = function equal(actual, expected, message) {
-  if (actual != expected) fail(actual, expected, message, "==");
+  if (actual != expected) fail(actual, expected, message, "==", assert.equal);
 };
 
 // 6. The non-equality assertion tests for whether two objects are not equal
 // with != assert.notEqual(actual, expected, message_opt);
 
 assert.notEqual = function notEqual(actual, expected, message) {
-  if (actual == expected) fail(actual, expected, message, "!=");
+  if (actual == expected) { 
+    fail(actual, expected, message, "!=", assert.notEqual);
+  }
 };
 
 // 7. The equivalence assertion tests a deep equality relation.
 // assert.deepEqual(actual, expected, message_opt);
 
-exports.deepEqual = function deepEqual(actual, expected, message) {
+assert.deepEqual = function deepEqual(actual, expected, message) {
   if (!_deepEqual(actual, expected)) {
-    fail(actual, expected, message, "deepEqual");
+    fail(actual, expected, message, "deepEqual", assert.deepEqual);
   }
 };
 
@@ -212,9 +205,9 @@ function objEquiv (a, b) {
 // 8. The non-equivalence assertion tests for any deep inequality.
 // assert.notDeepEqual(actual, expected, message_opt);
 
-exports.notDeepEqual = function notDeepEqual(actual, expected, message) {
+assert.notDeepEqual = function notDeepEqual(actual, expected, message) {
   if (_deepEqual(actual, expected)) {
-    fail(actual, expected, message, "notDeepEqual");
+    fail(actual, expected, message, "notDeepEqual", assert.notDeepEqual);
   }
 };
 
@@ -222,14 +215,18 @@ exports.notDeepEqual = function notDeepEqual(actual, expected, message) {
 // assert.strictEqual(actual, expected, message_opt);
 
 assert.strictEqual = function strictEqual(actual, expected, message) {
-  if (actual !== expected) fail(actual, expected, message, "===");
+  if (actual !== expected) {
+    fail(actual, expected, message, "===", assert.strictEqual);
+  }
 };
 
 // 10. The strict non-equality assertion tests for strict inequality, as determined by !==.
 // assert.notStrictEqual(actual, expected, message_opt);
 
 assert.notStrictEqual = function notStrictEqual(actual, expected, message) {
-  if (actual === expected) fail(actual, expected, message, "!==");
+  if (actual === expected) {
+    fail(actual, expected, message, "!==", assert.notStrictEqual);
+  }
 };
 
 function _throws (shouldThrow, block, err, message) {
@@ -285,3 +282,4 @@ assert.throws = function(block, /*optional*/error, /*optional*/message) {
 assert.doesNotThrow = function(block, /*optional*/error, /*optional*/message) {
   _throws.apply(this, [false].concat(pSlice.call(arguments)));
 };
+