@thi.ng/transducers/filter.js

Collection of ~170 lightweight, composable transducers, reducers, generators, iterators for functional data transformations

import { isIterable } from "@thi.ng/checks/is-iterable";
import { compR } from "./compr.js";
import { iterator1 } from "./iterator.js";
function filter(pred, src) {
  return isIterable(src) ? iterator1(filter(pred), src) : (rfn) => {
    const r = rfn[2];
    return compR(rfn, (acc, x) => pred(x) ? r(acc, x) : acc);
  };
}
export {
  filter
};