About the TypeScript Online Compiler
TypeScript extends JavaScript with static types, interfaces, and stronger development tooling. This compiler helps test typed functions, object models, and JavaScript-compatible programs without setting up a local project.
Use it to confirm interfaces, unions, generics, enums, type narrowing, and compile-time errors. Print runtime values with console.log after the type checks succeed. The compiler runs a command-line program rather than a browser page, so DOM APIs should not be expected.
Frequently Asked Questions
What is the TypeScript Online Compiler?
TypeScript extends JavaScript with static types, interfaces, and stronger development tooling. This compiler helps test typed functions, object models, and JavaScript-compatible programs without setting up a local project.
How do I run TypeScript code?
Enter or edit your program in the Code field, select Run, and read the program result in the Output field.
Which source file does this compiler use?
The submitted code is executed as index.ts, using the file format expected for TypeScript.
Can this compiler accept interactive program input?
This streamlined compiler contains only Code and Output fields. Programs should include their required test values directly in the source code.
Where are compilation errors displayed?
Syntax errors, compiler messages, runtime errors, and normal program output are displayed together in the read-only Output field.