@effect-ts/system
Version:
Effect-TS is a zero dependency set of libraries to write highly productive, purely functional TypeScript at scale.
33 lines (30 loc) • 946 B
JavaScript
// ets_tracing: off
import * as CK from "../../../../Collections/Immutable/Chunk/index.mjs";
import * as CH from "../../Channel/index.mjs";
import * as C from "../core.mjs";
/**
* Takes all elements of the stream until the specified predicate evaluates
* to `true`.
*/
export function takeUntil_(self, f) {
const loop = CH.readWith(chunk => {
const taken = CK.takeWhile_(chunk, _ => !f(_));
const last = CK.take_(CK.drop_(chunk, CK.size(taken)), 1);
if (CK.isEmpty(last)) {
return CH.zipRight_(CH.write(taken), loop);
} else {
return CH.write(CK.concat_(taken, last));
}
}, _ => CH.fail(_), _ => CH.succeed(_));
return new C.Stream(self.channel[">>>"](loop));
}
/**
* Takes all elements of the stream until the specified predicate evaluates
* to `true`.
*
* @ets_data_first takeUntil_
*/
export function takeUntil(f) {
return self => takeUntil_(self, f);
}
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