Format and beautify JavaScript with configurable indentation, quotes and semicolons.
Runs in your browserDeveloper
Category: Developer
TypeScript Formatter
Format TypeScript, interfaces and type annotations with the correct parser.
Runs in your browserProcessed locally. Your input never leaves your device.
Details
About this tool
Format TypeScript with a parser that understands interfaces, generics, type annotations, enums and modern module syntax. Configure indentation, line length, quote style and semicolon handling without switching the source to JavaScript mode.
Using the TypeScript grammar matters because valid type syntax is not valid JavaScript. The formatter preserves program structure and reports malformed input instead of applying whitespace rules blindly.
Processing takes place entirely in the browser and the source stays on your device.
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Good to know
Questions people actually ask
- Is this a real TypeScript parser?
- Yes. The tool uses Prettier's TypeScript parser, not regular expressions or a generic indentation algorithm.
- Is the source code uploaded?
- No. Parsing and formatting run in the browser. The language engine is loaded on demand and the source stays on the device.
- Can formatting change program behaviour?
- The formatter is designed to preserve the parsed program while normalising quotes and semicolons. Review a diff before committing, especially when a repository enforces different style rules.