"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.createMapStream = createMapStream;
var _stream = require("stream");
/*
 * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 * or more contributor license agreements. Licensed under the Elastic License
 * 2.0 and the Server Side Public License, v 1; you may not use this file except
 * in compliance with, at your election, the Elastic License 2.0 or the Server
 * Side Public License, v 1.
 */

function createMapStream(fn) {
  let i = 0;
  return new _stream.Transform({
    objectMode: true,
    async transform(value, enc, done) {
      try {
        this.push(await fn(value, i++));
        done();
      } catch (err) {
        done(err);
      }
    }
  });
}