Comments (5)
👍
from es6-promise.
so currently precisely 0 browser support this. Would we like to still check and override?
from es6-promise.
Happy to clobber all until we get an implementation that supports subclassing, then we can look at how best to feature test it.
from es6-promise.
- subclass-ability is now a criteria for polyfil
- update readme accordingly
Something like the following (although it adds many bytes).
var isNative = Object.prototype.toString.call(Promise.resolve()) === '[object Promise]';
function testSubclassing() {
function SubClass() {
Promise.call(this);
}
SubClass.prototype= Object.create(Promise.prototype)
var seemsToSubClass;
try {
new SubClass(function() { });
seemsToSubClass = true;
} catch(e) {
seemsToSubClass = false
}
return seemsToSubClass;
}
if (isNative) {
canSubclass = testSubClassing();
}
from es6-promise.
master should do this now, but If you have time to audit it that would be awesome.!
from es6-promise.
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