3.0.0 • Published 7 years ago
is-checks v3.0.0
is-checks
This is just a POC and has NO real thoughts behind it.
This is basiaclly eventual-values with some extra methods that I wanted.
See:
example
if ( isError(state) ) {
return <Error message={ state } />
}
else if ( isPending(state) ) {
return <Spinner />
}
else if ( isData(state) ) {
return !isEmpty(state) ? state.map(item => <Item />) : <div>No items to display</div> :
}
values
val | isOk(val) | isData(val) | isEmpty(val) | isPending(val) | isError(val) |
---|---|---|---|---|---|
undefined | false | false | true | true | false |
null | true | false | true | false | false |
1 (number) | true | true | false | false | false |
'' (empty string) | true | true | true | false | false |
'name' (string) | true | true | false | false | false |
[] or {} | true | true | true | false | false |
[1] or { value: true } | true | true | false | false | false |
throw Error() or Promise.reject() | false | false | true | false | true |