On 6/28/13 10:44 AM, Marcos Caceres wrote: > When using a method that vends a promise, it's not clear to me what should happen when WebIDL says to throw a TypeError. > > Like, given: > > interface Foo{ > Promise bar(object obj); > }; > > //Does this throw a TypeError > //or is boo called with the TypeError? > fooInstance.bar(123).then(yay,boo); Per current spec it throws a TypeError. Just like it throws if called on the wrong this object, say. And just like it would throw if you had: interface Foo { Promise bar(DOMString str); }; fooInstance.bar( { toString: function() { throw "xyz"; } } ).then(whatever); I think this behavior is perfectly reasonable, for what it's worth... -BorisReceived on Friday, 28 June 2013 14:56:28 UTC
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