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---
title: Performance
---
These tricks will make ts-node faster.
## Skip typechecking
It is often better to typecheck as part of your tests or linting. You can run `tsc --noEmit` to do this. In these cases, ts-node can skip typechecking, making it much faster.
To skip typechecking in ts-node, do one of the following:
* Enable [swc](./swc.md)
* This is by far the fastest option
* Enable [`transpileOnly`](./options.md#transpileonly) to skip typechecking without swc
## With typechecking
If you absolutely must typecheck in ts-node:
* Avoid dynamic `require()` which may trigger repeated typechecking; prefer `import`
* Try with and without `--files`; one may be faster depending on your project
* Check `tsc --showConfig`; make sure all executed files are included
* Enable [`skipLibCheck`](https://www.typescriptlang.org/tsconfig#skipLibCheck)
* Set a [`types`](https://www.typescriptlang.org/tsconfig#types) array to avoid loading unnecessary `@types`
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