TypeScript

ts-node Commands

Execute TypeScript files directly without a separate compilation step using ts-node. Ideal for scripts, REPL, and development workflows.

7 commands

Pro Tips

Use 'ts-node --esm script.ts' for ES module support, or set 'ts-node: { esm: true }' in tsconfig.

Use 'ts-node --transpileOnly' to skip type checking for faster execution — useful for scripts.

Consider 'tsx' as a faster alternative: 'npx tsx script.ts' uses esbuild for near-instant startup.

Common Mistakes

ts-node is for development only. Compile to JavaScript for production — ts-node adds startup overhead.

ts-node uses its own tsconfig resolution. Ensure 'ts-node' options in tsconfig.json match your needs.

Commands

Run TypeScript file

$ ts-node src/index.ts

Execute TypeScript file directly without precompilation.

Start REPL

$ ts-node

Start interactive TypeScript REPL.

Evaluate code

$ ts-node -e "console.log('Hello')"

Evaluate TypeScript code from command line.

Transpile only (fast)

$ ts-node --transpile-only src/index.ts

Skip type checking for faster execution.

ES modules mode

$ ts-node --esm src/index.ts

Run with ES modules support.

With specific config

$ ts-node --project tsconfig.dev.json src/index.ts

Use specific tsconfig for execution.

Register hook (Node.js)

$ node -r ts-node/register src/index.ts

Run TypeScript via Node.js with ts-node as loader.