Working with the File System on Node.js

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I remember a project that someone had created earlier. It had custom prebuild step that replaced some values in .js files to make dev/stage/prod selection. You had to run it twice to be almost sure it worked. It was using fs.readFile without waiting for a callback.

> It was using fs.readFile without waiting for a callback.

This is why I always use fs.readFileSync or correctly implement the callback and read it sequentially myself as it feeds me chunks of the file data buffer via the callback.

You can also use TypeScript and await on the promise which is super clean, highly recommend it.

All in all, node's file system libs are pretty solid.

> You can also use TypeScript and await on the promise

I'm not sure what you mean here. The promises and async/await syntax come from JavaScript, not from TypeScript - TS is just the sugar on top that provides the typings.

Yup, you’re right… I just had a brain fart lol.

Recent versions of node have an ‘fa/promises’ module and event support top-level await natively. So you can just await fs.readFile where fs here is the promises version of the module.

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