Blob Notebook
Switch guideTypeScript editor

TYPESCRIPT EDITOR

Keep typed examples close to the work they explain.

Use Blob Notebook as a TypeScript scratchpad for interfaces, utility functions, and code review notes. Edit .ts source with syntax highlighting and save it in the same browser as the rest of your notebook.

Open editor

Free to use · No account needed · Saved in this browser

release.ts TypeScript
interface Release {
  version: string;
  ready: boolean;
}

function readyReleases(items: Release[]): Release[] {
  return items.filter((item) => item.ready);
}
An interface and a typed helper make a useful starting point for a TypeScript note.Try this example

EDIT IN YOUR BROWSER

Your local draft

The notebook’s editing tools, right here. Save to notebook when you want a named copy.

Open full editor

Enable JavaScript to edit here, or open the full editor above. The example and guide are always available.

This draft is shared with the full editor for this task and stays separate from named notes. Export a copy or save to notebook to include it in a notebook backup. This editor page and its tools reopen offline after the editor reports readiness. Informational and privacy guides need a connection.

A FEW SIMPLE STEPS

Get started

  1. Create a note and search the language chooser for TypeScript or .ts.
  2. Paste the typed source or import a .ts file.
  3. Use Format in the code tools, then review the change in the source.
  4. Copy or download the result and check it in your TypeScript project.

Open editor takes you to the draft on this page. Paste or open a source file, or choose Try this example. Save to notebook keeps a named copy with your notes. Your workspace style stays unchanged.

Save the type and its example together

A short snippet is more useful when you remember its expected input. Keep the interface, a small call example, and a comment about edge cases in the same note. Add tags to distinguish experiments from snippets you use in a project.

Format supported TypeScript source, search for a symbol with find and replace, or compare two versions in separate panes. Switch a note to JavaScript when you are working with the untyped form.

Check types in your project

Syntax highlighting and formatting do not type-check a program. The notebook does not run tsc, resolve your tsconfig, install type definitions, or compile TypeScript into a runnable application.

Download or copy the edited source into your actual project to check types and run tests with its dependencies. Keep a notebook backup if these examples need to survive a browser reset.

A few questions

Does the editor compile or type-check TypeScript?

No. It provides source editing, syntax highlighting, and formatting. Use your project’s compiler and tests to check types and behavior.