JoostK b5ed403bc4 fix(ivy): prevent ngtsc from synchronous compilation for in-flight resouces (#27357)
When a single resource is preloaded twice in ngtsc, the second request
would be recognized as in-flight in which case `undefined` would
be returned, which signals to the compilation that is can resume
synchronously. The compilation would then proceed immediately and call
`load`, only to find out that the request is still in-flight which is
not allowed.

This commit caches the Promise of the in-flight fetch requests, such
that subsequent preload requests can return the corresponding Promise
instance.

PR Close #27357
2018-12-04 14:03:54 -08:00
2017-01-27 15:03:11 -06:00
2018-08-14 11:58:47 -07:00
2018-10-19 20:59:29 -07:00
2018-07-03 13:32:06 -07:00

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