TypeScript — Playground

Dev ToolsSee it livetypescriptlang.org

A browser language playground pairs editable TypeScript with compiled output.

TypeScript — Playground — captured interface — Page excerpt · scroll inside to explore

Source capture · 2026-09-04Open full image ↗

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Why this pattern works

Keep source, generated results, and compiler options within one focused workspace.

Design notes

Surface: Playground
Navigation: Compiler choices and run actions stay above the workspace; output modes have their own tabs.
Layout: Editable TypeScript and generated output occupy neighboring editor panes.
Density: Keep the working area large; use compact labels for controls without shrinking the editing text.
Color: Light editor surfaces with syntax highlighting and subdued pane separators.
Type: Monospaced code contrasts with compact sans-serif interface labels.
Pattern: Keep source, generated results, and compiler options within one focused workspace.
States: Default public playground example; no project files or private code are loaded.
Don't: Do not copy brand assets or sample records. Preserve keyboard access and design empty, loading, and error states for the actual task.

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Prompt text

# My project
[Describe the product, audience, and screen you want to improve]

Stack: Use the existing project stack
Task: Implement the interface and verify the result in the existing project.

## Tool guidance (Any AI tool)
Use available project tools to inspect, implement, and test. State any unavailable capabilities.

# Design reference: TypeScript — Playground
Source: https://www.typescriptlang.org/play/
Swipefile reference: https://swipefile.design/ref/typescript-playground/
Captured: 2026-09-04. This is a dated reference, not a claim about the current live product.
Capture scope: a page excerpt. Do not infer unseen sections or interactions.

## Objective
Adapt the interaction and layout patterns below to my project. Use my own content and identity. Do not reproduce logos, proprietary copy, or brand assets.

## Reference notes
- surface: Playground
- nav: Compiler choices and run actions stay above the workspace; output modes have their own tabs.
- layout: Editable TypeScript and generated output occupy neighboring editor panes.
- density: Keep the working area large; use compact labels for controls without shrinking the editing text.
- color: Light editor surfaces with syntax highlighting and subdued pane separators.
- typography: Monospaced code contrasts with compact sans-serif interface labels.
- pattern: Keep source, generated results, and compiler options within one focused workspace.
- states: Default public playground example; no project files or private code are loaded.
- dont: Do not copy brand assets or sample records. Preserve keyboard access and design empty, loading, and error states for the actual task.

Useful for: Keep source, generated results, and compiler options within one focused workspace.

## Acceptance criteria
- Existing project conventions, design tokens, working functionality, and unrelated changes are preserved.
- Two or three reference principles clearly support the user's task; conflicts are resolved in favor of usability and the existing product.
- Reusable components and semantic HTML express the interface. Available licensed assets are used; important UI text is never rendered as a bitmap.
- Every visible control has a defined behavior. Loading, empty, error, success, disabled, and long-content states are specified where relevant. Demo data is clearly labeled.
- Navigation and content adapt at 375px, 768px, and 1440px without horizontal page overflow. Keyboard use, visible focus, labeled inputs, at least 44px touch targets, readable contrast, and reduced motion are supported.
- Verification distinguishes rendered behavior from proposals and identifies anything still requiring a backend or external service.

## Quality bar
Clear hierarchy, consistent spacing, restrained surfaces, and purposeful motion. Avoid decorative gradients, excessive cards, placeholder buttons, and invented metrics unless the project calls for them. Do not claim a feature is connected or tested without evidence.

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## Objective
Adapt the interaction and layout patterns below to my project. Use my own content and identity. Do not reproduce logos, proprietary copy, or brand assets.

Useful for: Keep source, generated results, and compiler options within one focused workspace.

TypeScript — Playground

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