iter-tools-es/impls/$filter/async-filter.js

The iterable toolbox

const {
  asyncIterableCurry
} = require('../../internal/async-iterable.js');

async function* __asyncFilter(source, predicate) {
  let c = 0;

  for await (const value of source) {
    if (await predicate(value, c++)) {
      yield value;
    }
  }
}

exports.__asyncFilter = __asyncFilter;
const asyncFilter = /*#__PURE__*/asyncIterableCurry(__asyncFilter);
exports.asyncFilter = asyncFilter;