diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/deferred.js | 13 | ||||
| -rw-r--r-- | src/deferred/exceptionHook.js | 19 | ||||
| -rw-r--r-- | src/jquery.js | 1 |
3 files changed, 32 insertions, 1 deletions
diff --git a/src/deferred.js b/src/deferred.js index ff12ac3e0..6a1ef3b43 100644 --- a/src/deferred.js +++ b/src/deferred.js @@ -157,12 +157,17 @@ jQuery.extend( { mightThrow(); } catch ( e ) { + if ( jQuery.Deferred.exceptionHook ) { + jQuery.Deferred.exceptionHook( e, + process.stackTrace ); + } + // Support: Promises/A+ section 2.3.3.3.4.1 // https://promisesaplus.com/#point-61 // Ignore post-resolution exceptions if ( depth + 1 >= maxDepth ) { - // Only substitue handlers pass on context + // Only substitute handlers pass on context // and multiple values (non-spec behavior) if ( handler !== Thrower ) { that = undefined; @@ -182,6 +187,12 @@ jQuery.extend( { if ( depth ) { process(); } else { + + // Call an optional hook to record the stack, in case of exception + // since it's otherwise lost when execution goes async + if ( jQuery.Deferred.getStackHook ) { + process.stackTrace = jQuery.Deferred.getStackHook(); + } window.setTimeout( process ); } }; diff --git a/src/deferred/exceptionHook.js b/src/deferred/exceptionHook.js new file mode 100644 index 000000000..b9955063a --- /dev/null +++ b/src/deferred/exceptionHook.js @@ -0,0 +1,19 @@ +define( [ + "../core", + "../deferred" +], function( jQuery ) { + +// These usually indicate a programmer mistake during development, +// warn about them ASAP rather than swallowing them by default. +var rerrorNames = /^(Eval|Internal|Range|Reference|Syntax|Type|URI)Error$/; + +jQuery.Deferred.exceptionHook = function( error, stack ) { + + // Support: IE9 + // Console exists when dev tools are open, which can happen at any time + if ( window.console && window.console.warn && error && rerrorNames.test( error.name ) ) { + window.console.warn( "jQuery.Deferred exception: " + error.message, stack ); + } +}; + +} ); diff --git a/src/jquery.js b/src/jquery.js index 2faa9c3cd..4cc9c8a90 100644 --- a/src/jquery.js +++ b/src/jquery.js @@ -4,6 +4,7 @@ define( [ "./traversing", "./callbacks", "./deferred", + "./deferred/exceptionHook", "./core/ready", "./data", "./queue", |