fix: improve long-stack-trace stack format detection

Author: mhevery

lib/zone-spec/long-stack-trace.ts

@@ -15,7 +15,7 @@ const IGNORE_FRAMES: {[k: string]: true} = {};
 const creationTrace = '__creationTrace__';
 const ERROR_TAG = 'STACKTRACE TRACKING';
 const SEP_TAG = '__SEP_TAG__';
-let sepTemplate = '';
+let sepTemplate: string = SEP_TAG + '@[native]';
 
 class LongStackTrace {
   error: Error = getStacktrace();
@@ -137,19 +137,23 @@ function computeIgnoreFrames() {
   const frames2 = frames[1];
   for (let i = 0; i < frames1.length; i++) {
     const frame1 = frames1[i];
-    const frame2 = frames2[i];
-    if (!sepTemplate && frame1.indexOf(ERROR_TAG) == -1) {
-      sepTemplate = frame1.replace(/^(\s*(at)?\s*)([\w\/\<]+)/, '$1' + SEP_TAG);
+    if (frame1.indexOf(ERROR_TAG) == -1) {
+      let match = frame1.match(/^\s*at\s+/);
+      if (match) {
+        sepTemplate = match[0] + SEP_TAG + ' (http://localhost)';
+        break;
+      }
     }
+  }
+
+  for (let i = 0; i < frames1.length; i++) {
+    const frame1 = frames1[i];
+    const frame2 = frames2[i];
     if (frame1 === frame2) {
       IGNORE_FRAMES[frame1] = true;
     } else {
       break;
     }
   }
-  if (!sepTemplate) {
-    // If we could not find it default to this text.
-    sepTemplate = SEP_TAG + '@[native code]';
-  }
 }
 computeIgnoreFrames();

test/zone-spec/long-stack-trace-zone.spec.ts

@@ -28,17 +28,25 @@ describe('longStackTraceZone', function() {
     log = [];
   });
 
+  function expectElapsed(stack: string, expectedCount: number) {
+    try {
+      let actualCount = stack.split('_Elapsed_').length;
+      if (actualCount !== expectedCount) {
+        expect(actualCount).toEqual(expectedCount);
+        console.log(stack);
+      }
+    } catch (e) {
+      expect(e).toBe(null);
+    }
+  }
+
   it('should produce long stack traces', function(done) {
     lstz.run(function() {
       setTimeout(function() {
         setTimeout(function() {
           setTimeout(function() {
-            try {
-              expect(log[0].stack.split('Elapsed').length).toBe(3);
-              done();
-            } catch (e) {
-              expect(e).toBe(null);
-            }
+            expectElapsed(log[0].stack, 3);
+            done();
           }, 0);
           throw new Error('Hello');
         }, 0);
@@ -81,12 +89,8 @@ describe('longStackTraceZone', function() {
             fail('should not get here');
           });
           setTimeout(function() {
-            try {
-              expect(log[0].stack.split('Elapsed').length).toBe(5);
-              done();
-            } catch (e) {
-              expect(e).toBe(null);
-            }
+            expectElapsed(log[0].stack, 5);
+            done();
           }, 0);
         }, 0);
       }, 0);
@@ -105,7 +109,7 @@ describe('longStackTraceZone', function() {
           promise.catch(function(error) {
             // should be able to get long stack trace
             const longStackFrames: string = longStackTraceZoneSpec.getLongStackTrace(error);
-            expect(longStackFrames.split('Elapsed').length).toBe(4);
+            expectElapsed(longStackFrames, 4);
             done();
           });
         }, 0);