Copyable Code Block — screenshot 1
Developer Tooling

A code surface engineered to be copied correctly.

Reusable technical primitive / first release

FreeNo trial, no watermark

Syntax-aware code presentation with exact clipboard semantics, optional line context, safe fallback behavior, and responsive overflow.

Preview Live Demo
LIVE IMPLEMENTATION
typescriptidentity-context.tsidentity-context.ts — typescript
type IdentityContext = {
  sessionId: string
  organizationId: string
  roles: string[]
}
​
export function resolveContext(): IdentityContext {
  return {
    sessionId: crypto.randomUUID(),
    organizationId: 'org_demo',
    roles: ['developer'],
  }
}

The same reusable primitive used in the live demo, dropped into a real Velox product surface rather than a screenshot.

A small production-oriented code surface for documentation, technical product pages, and developer-facing interfaces.

The implementation intentionally avoids a large highlighting runtime and keeps the source text selectable even when a language is unsupported.

Runs on
{"React 19+","browser Clipboard API when available"}
Requires
No runtime dependency beyond React. Clipboard support gracefully falls back to selectable text when the browser does not expose navigator.clipboard.
Live previewOpen in a new tab

What you do not have to build. Your product is what is left.

  • Exact copy semantics

    Copies the source string only — never line numbers, labels, or decorative UI.

  • Lightweight syntax awareness

    Provides readable language-aware token styling without shipping a large highlighting engine.

  • Safe fallback

    Unknown languages remain selectable plain text instead of relying on unsafe HTML injection.

  • Responsive by design

    Long lines remain inspectable through deliberate horizontal overflow rather than destructive wrapping.

Drops into your project. Stays intact when you edit.

Integration
The primitive is designed to drop into documentation and technical product surfaces without owning page layout or data.
Install
Import the CodeBlock component, pass the source string, then optionally set language, filename, lineNumbers, highlightedLines, and wrap.
Customizable
Code content, language label, filename, line numbers, highlighted lines, and wrap behavior are exposed through a small typed API.
Protected
Source text safety, copy semantics, and responsive overflow behavior remain internal to the primitive.

Exactly what you can configure. Each one with its type and default.

  • codestringDefault —

    Exact source text rendered and copied.

  • languageCodeBlockLanguageDefault text

    Language identifier used for the lightweight syntax-aware presentation.

  • filenamestring?Default undefined

    Optional filename or path displayed in the toolbar.

  • lineNumbersbooleanDefault false

    Shows a presentation-only line-number gutter.

  • highlightedLinesnumber[]Default []

    One-based line numbers to emphasize without changing the copied source.

  • wrapbooleanDefault false

    Controls whether long lines wrap instead of using horizontal overflow.

The last questions, answered plainly.

Questions

  • No. Line numbers are presentation-only and are excluded from the clipboard payload.

Not answered here?Ask The Velox Studio

Copyable Code Block is built to the same standard as every Velox product. A self-contained, documented system, reviewed for real production use rather than a copy-pasted layer group.