Replace all tab characters with spaces

Replace each tab with a fixed number of spaces.

JavaScript Version 1.0.0 · MIT · .md

function tabsToSpaces({ text, spaces }) { return text.replaceAll('\t', ' '.repeat(spaces)); }

Input & expected output

{
  "text": "\tindented",
  "spaces": 2
}

"  indented"

The edge case

{
  "text": "a\tb",
  "spaces": 0
}

"ab"

Know the limits

• This does not align to tab stops; every tab becomes the same width.

The function above is the implementation used by the lab. The lab validates JSON types and caps size before execution; include equivalent validation when accepting untrusted input in your application.

Keep exploring

• Capitalize a string — Uppercase the first Unicode code point and preserve the remaining text.
• Reverse a string — Reverse Unicode code points without splitting surrogate pairs.
• Check a palindrome — Compare a string with its code-point reversal.