Angular firebase error

Question

i keep on getting this error in index.d.ts file for firebase ERROR

Error:(18, 18) TS1005:',' expected.
Error:(28, 27) TS1005:',' expected.
Error:(30, 12) TS2314:Generic type 'ErrorFn' requires 2 type argument(s).
Error:(232, 11) TS2314:Generic type 'Observer<T, E, Error>' requires 3 type argument(s).
Error:(239, 11) TS2314:Generic type 'Observer<T, E, Error>' requires 3 type argument(s).
Error:(587, 46) TS2314:Generic type 'Observer<T, E, Error>' requires 3 type argument(s).
Error:(588, 15) TS2314:Generic type 'ErrorFn' requires 2 type argument(s).
Error:(592, 46) TS2314:Generic type 'Observer<T, E, Error>' requires 3 type argument(s).
Error:(593, 15) TS2314:Generic type 'ErrorFn' requires 2 type argument(s).
Error:(701, 24) TS2314:Generic type 'Observer<T, E, Error>' requires 3 type argument(s).

Code

  type ErrorFn<E = Error> = (error: E) => void;
  interface Observer<T, E = Error> 
  error: ErrorFn<E>;
  firebase.Observer<any>

can anyone help me with this, i have been stuck for about a week now

interface Observer<T, E = Error> { error: ErrorFn<E>; }

JunJie Wang
– JunJie Wang

2018-08-29 12:05:09 +00:00
Commented Aug 29, 2018 at 12:05 — JunJie Wang
– JunJie Wang, Commented Aug 29, 2018 at 12:05
try add block { }

JunJie Wang
– JunJie Wang

2018-08-29 12:06:53 +00:00
Commented Aug 29, 2018 at 12:06 — JunJie Wang
– JunJie Wang, Commented Aug 29, 2018 at 12:06

Matt McCutchen · Accepted Answer · 2018-08-29 22:41:22Z

1

It looks like TypeScript is failing on every type parameter default in the file. Upgrade to TypeScript 2.3 or newer, which supports type parameter defaults.

answered Aug 29, 2018 at 22:41

Matt McCutchen

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1 Comment

Sreekanth Karini Over a year ago

Thanks, Struggled for 3 days finally this fixed the issue.

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