CSVParse for Node.js


Option trim

Table of Contents

The trim option ignore whitespace characters immediately around the delimiter. Defaults to false. It does not remove whitespace present inside the quotes of a field.

  • Type: boolean
  • Optional
  • Default: false
  • Since: early days
  • Related: ltrim, rtrim — see Available Options

The characters interpreted as whitespaces are identical to the \s meta character in regular expressions:

  • Horizontal tab, String.fromCharCode(9)
  • NL line feed, new line, String.fromCharCode(10)
  • NP Form feed, new page, String.fromCharCode(12)
  • Carriage return, String.fromCharCode(13)
  • Space, String.fromCharCode(32)


This example insert spaces around fields at multiple locations.

import assert from 'assert';
import { parse } from 'csv-parse/sync';

const records = parse('a ,1\nb, 2\n c,3', {
  trim: true
  records, [
    [ 'a', '1' ],
    [ 'b', '2' ],
    [ 'c', '3' ]


The Node.js CSV project is an open source product hosted on GitHub and developed by Adaltas.