json2csv/lib/json2csv.js

Convert JSON to CSV

'use strict';

const { Readable } = require('stream');
const JSON2CSVParser = require('./JSON2CSVParser');
const JSON2CSVAsyncParser = require('./JSON2CSVAsyncParser');
const JSON2CSVTransform = require('./JSON2CSVTransform');

module.exports.Parser = JSON2CSVParser;
module.exports.AsyncParser = JSON2CSVAsyncParser;
module.exports.Transform = JSON2CSVTransform;

// Convenience method to keep the API similar to version 3.X
module.exports.parse = (data, opts) => new JSON2CSVParser(opts).parse(data);
module.exports.parseAsync = (data, opts, transformOpts) => {
  if (!(data instanceof Readable)) {
    transformOpts = Object.assign({}, transformOpts, { objectMode: true });
  }

  const asyncParser = new JSON2CSVAsyncParser(opts, transformOpts);
  const promise = asyncParser.promise();

  if (Array.isArray(data)) {
    data.forEach(item => asyncParser.input.push(item));
    asyncParser.input.push(null);
  } else if (data instanceof Readable) {
    asyncParser.fromInput(data);
  } else {
    asyncParser.input.push(data);
    asyncParser.input.push(null);
  }

  return promise;
};