Code block
A React component in Beamline's Content & display category.
Code to read and copy: highlighted in the system's colours, numbered, marked lines, long files folded behind “Show all”.
Use it for
- Showing code in docs, settings and answers.
Not for
- Changes (file-diff).
- Editable code (a code editor).
Anatomy
- header (file or language, copy)
- gutter
- lines (always left to right, also in RTL pages)
- marked lines (accent tint + 2px accent edge)
- fold (fades out through a mask, then Show all)
States
- full
- folded
Keyboard
- The code is a focusable region (scroll with arrows)
- Show all is a button
Motion
None.
Props
| Prop | Type | Default | Description |
|---|---|---|---|
code / language / filename | string | — | |
maxLines | number | — | |
lineNumbers / wrap | boolean | — | |
highlight | number[] | — | |
style / ref | CSSProperties / native Ref | — | native figure HTMLElement |
classNames | CodeBlockClassNames | — |
Dependencies
lowlight, lucide-react
Import
import { CodeBlock } from "@/components/code-block/code-block";Get it
Code block is part of Beamline: 190 React components and screens your coding agent (Claude Code, Codex, Cursor or any MCP client) installs into your app through Beamline's MCP server, as a ready-built package or as plain React source you can change. $49 one payment (regular $200), no subscription, a year of updates, one licence for your whole team. Get Beamline · Connect your agent
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