strip-ansi

Remove ANSI escape codes

Contents

• What is this?
• Install
• Use
• API
  • stripAnsi(value[, options])
• Types
  • Options
  • ToString<[T]>
• Contribute

What is this?

This is a tiny, but useful package for removing ANSI escape codes from a string or stringified value.

Install

This package is ESM only.

In Node.js with yarn:

yarn add @flex-development/strip-ansi

In Deno with esm.sh:

import { stripAnsi } from 'https://esm.sh/@flex-development/strip-ansi'

In browsers with esm.sh:

<script type="module">
  import { stripAnsi } from 'https://esm.sh/@flex-development/strip-ansi'
</script>

With bun:

bun add @flex-development/strip-ansi

Use

example.mjs:

import { ansiRegex } from '@flex-development/ansi-regex'
import c from '@flex-development/colors'
import { stripAnsi } from '@flex-development/strip-ansi'

const hello = c.bgBlue(c.bold('hello world 🌎'))
const hi = stripAnsi(hello, { flags: { u: false } })

console.log(`${JSON.stringify(hello)}:`, ansiRegex().test(hello))
console.log(`${JSON.stringify(hi)}:`, ansiRegex().test(hi))

...yields

"\u001b[44m\u001b[1mhello world 🌎\u001b[22m\u001b[49m": true
"hello world 🌎": false

API

This package exports the following identifiers:

• stripAnsi

The default export is stripAnsi.

stripAnsi(value[, options])

Remove ANSI escape codes from value.

Parameters

• value (unknown) — the string or value to remove escape codes from.
  non-string values will be converted to strings (i.e. options.toString(value))
• options (Options | null | undefined, optional) — options for removing escape codes
  • default: { flags: { g: true, u: true }, toString: String }

Returns

(string) The stringified value with ANSI escape codes removed

Types

This package is fully typed with TypeScript.

Options

Options for removing ANSI escape codes (interface).

Properties

• flags? (Flags | null | undefined, optional) — record, where each key is a regular expression flag and each truthy value indicates if the flag should be applied to the regular expression matching ansi escape codes
• toString? (ToString | null | undefined, optional) — convert a value to a string

ToString<[T]>

Convert value to a string (type).

type ToString<T = any> = (this: void, value: T) => string

Type Parameters

• T (any, optional) — the thing to stringify

Parameters

• value (T) — the thing to stringify

Returns

(string) The stringified value

Contribute

See CONTRIBUTING.md.

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