[Pkg-javascript-commits] [dojo] 02/05: Allow downstream error handling

[David Prévot]

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taffit pushed a commit to annotated tag 1.8.8
in repository dojo.

commit df0fff25015e5389de35f0d2a8929cdbd4c06f77
Author: Kris Zyp <kriszyp at gmail.com>
Date:   Thu Jun 26 22:27:02 2014 -0600

    Allow downstream error handling
    
    Allow errors to be handled after rejection passes through unhandled
    rejections, so rejections don't show as unhandled if downstream promises
    handle them, refs #18131.
---
 promise/instrumentation.js | 25 +++++++++++++++++--------
 1 file changed, 17 insertions(+), 8 deletions(-)

diff --git a/promise/instrumentation.js b/promise/instrumentation.js
index 49bf127..a5be441 100644
--- a/promise/instrumentation.js
+++ b/promise/instrumentation.js
@@ -30,17 +30,22 @@ define([
 	var activeTimeout = false;
 	var unhandledWait = 1000;
 	function trackUnhandledRejections(error, handled, rejection, deferred){
-		if(handled){
-			arrayUtil.some(errors, function(obj, ix){
-				if(obj.error === error){
-					errors.splice(ix, 1);
-					return true;
+		// try to find the existing tracking object
+		if(!arrayUtil.some(errors, function(obj){
+			if(obj.error === error){
+				// found the tracking object for this error
+				if(handled){
+					// if handled, update the state
+					obj.handled = true;
 				}
-			});
-		}else if(!arrayUtil.some(errors, function(obj){ return obj.error === error; })){
+				return true;
+			}
+		})){
+			// no tracking object has been setup, create one
 			errors.push({
 				error: error,
 				rejection: rejection,
+				handled: handled,
 				deferred: deferred,
 				timestamp: new Date().getTime()
 			});
@@ -55,8 +60,12 @@ define([
 		var now = new Date().getTime();
 		var reportBefore = now - unhandledWait;
 		errors = arrayUtil.filter(errors, function(obj){
+			// only report the error if we have waited long enough and
+			// it hasn't been handled
 			if(obj.timestamp < reportBefore){
-				logError(obj.error, obj.rejection, obj.deferred);
+				if(!obj.handled){
+					logError(obj.error, obj.rejection, obj.deferred);
+				}
 				return false;
 			}
 			return true;

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