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Have validate accept null and undefined
See original GitHub issueJust to make life easier, it would be great if when I call uuidValidate and pass in null or undefined, it returned false. Right now the compiler doesn’t allow a potentially null/undefined value to be given.
Right now I’m doing something like this:
this.route.paramMap
.pipe(
map(x => x.get('id')),
filter(x => !!x && uuidValidate(x)),
mustHaveValue(),
switchMap(x => this.clientService.get(x)),
untilDestroyed(this)
)
Issue Analytics
- State:
- Created 2 years ago
- Comments:11 (7 by maintainers)
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some more refs:
https://www.typescriptlang.org/docs/handbook/2/narrowing.html#using-type-predicates https://stackoverflow.com/q/40081332/148072
Reopening as this may be solved in #654.