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feat(patch): fix #499, let promise instance toString active like native#734
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mhevery merged 1 commit intoangular:masterfrom Apr 21, 2017
Merged
feat(patch): fix #499, let promise instance toString active like native#734mhevery merged 1 commit intoangular:masterfrom
mhevery merged 1 commit intoangular:masterfrom
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mhevery
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Apr 21, 2017
sod
reviewed
Oct 9, 2017
| export function patchObjectToString() { | ||
| const originalObjectToString = Object.prototype.toString; | ||
| Object.prototype.toString = function() { | ||
| if (this instanceof Promise) { |
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Isn't the reason why Promise shims are in use because Promise is not available in all common browsers today? So wouldn't this line throw
ReferenceError: Can't find variable: Promise
for projects & browsers that haven't window.Promise (neither native nor shim)?
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zone.js has provided Promise shim, so it will be ok even some browser or other environment doesn't provide native Promise
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fix #499, let
active as native to output
instead of current
in ES6, we can use Symbol.toStringTag, in ES5, I didn't find a better way to do this.