Default Entry

@tanstack/highlight registers every bundled language and exposes a ready-to-use singleton. It also re-exports the public core API.

import {
  highlight,
  highlightToHtml,
  listLanguages,
  normalizeLanguage,
  renderCodeBlockData,
  tokenize,
} from '@tanstack/highlight'

Values

allLanguages

A readonly tuple containing all bundled LanguageDefinition objects. Its order is stable and matches listLanguages.

defaultHighlighter

The Highlighter used by every convenience function in this entry point. Its fallback is plaintext.

Functions

normalizeLanguage

function normalizeLanguage(lang?: string): HighlightLanguage

Returns the canonical registered language name for a name or alias. Names are trimmed and lowercased. Unknown or omitted values resolve to plaintext.

listLanguages

function listLanguages(): Array<HighlightLanguage>

Returns the 39 canonical language names registered in defaultHighlighter.

tokenize

function tokenize(code: string, options?: HighlightOptions): HighlightTokenResult

Returns normalized language information and semantic tokens without rendering HTML.

highlight

function highlight(code: string, options?: HighlightOptions): HighlightResult

Returns code, lang, tokens, and a complete escaped <pre><code> string in html.

highlightToHtml

function highlightToHtml(code: string, options?: HighlightOptions): string

Returns only the HTML produced by highlight.

renderCodeBlockData

function renderCodeBlockData(options: {
  code: string
  decorations?: HighlightOptions['decorations']
  lang?: string
  lineNumbers?: boolean
  title?: string
}): RenderedCodeBlockData

Trims trailing whitespace from code, highlights it, and returns copyText, htmlMarkup, lang, title, and tokens for a code block component.

Types

HighlightLanguage

A union of every canonical language name included by this entry point. See the language matrix.

HighlightResult

The core HighlightResult narrowed so lang is HighlightLanguage.

HighlightTokenResult

The core HighlightTokenResult narrowed so lang is HighlightLanguage.

RenderedCodeBlockData

The core RenderedCodeBlockData narrowed so lang is HighlightLanguage.

RenderCodeBlockOptions

HighlightOptions plus an optional title.

Core re-exports

The default entry also exports createHighlighter, defineLanguage, escapeHtml, renderNodesToHtml, and renderTokens, along with these types: Highlighter, HighlightDecoration, HighlightDecorationData, HighlightElementNode, HighlightLineDecoration, HighlightOptions, HighlightRangeDecoration, HighlightRenderNode, HighlightTextNode, HighlightToken, HighlightTokenClass, LanguageDefinition, TokenRange, and TokenizerContext.

Their contracts are documented in the core reference.

Importing only these core helpers lets a compatible bundler remove the all-language registry. The bound convenience functions above retain it.