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

Async versions of various highly composable transducers, reducers and iterators

import { implementsFunction } from "@thi.ng/checks/implements-function";
import { isAsyncIterable } from "@thi.ng/checks/is-async-iterable";
import { isIterable } from "@thi.ng/checks/is-iterable";
import { illegalArgs } from "@thi.ng/errors/illegal-arguments";
const ensureAsyncTransducer = (x) => implementsFunction(x, "xformAsync") ? x.xformAsync() : x;
const ensureIterable = (x) => {
  !(isIterable(x) || isAsyncIterable(x)) && illegalArgs(`value is not iterable: ${x}`);
  return x;
};
export {
  ensureAsyncTransducer,
  ensureIterable
};