@thi.ng/transducers-async/filter.js

Async versions of various highly composable transducers, reducers and iterators

import { compR } from "./compr.js";
import { iterator1 } from "./iterator.js";
function filter(fn, src) {
  return src ? iterator1(filter(fn), src) : (rfn) => compR(
    rfn,
    async (acc, x) => await fn(x) ? rfn[2](acc, x) : acc
  );
}
export {
  filter
};