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@reactivex/ix-esnext-esm
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The Interactive Extensions for JavaScript
github.com/ReactiveX/IxJS
ReactiveX/IxJS
@reactivex/ix-esnext-esm
/
iterable
/
first.js
12 lines
(10 loc)
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JavaScript
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export
function
first
(
source, predicate = () =>
true
) {
let
i =
0
;
for
(
const
item
of
source) {
if
(
predicate
(item, i++)) {
return
item; } }
return
undefined
; }
//# sourceMappingURL=first.mjs.map