How to fix the `can't resolve module` error in Next.js
I ran into this issue with Next.js:
Module not found: Can’t resolve ‘fs’
In a Next.js page your can import methods from a file that loads Node.js modules.
This is fine, as long as you also use the imported method in getStaticProps().
Example, I had this code:
import { getData } from '../lib/data'
//...
export async function getStaticProps() {
const data = getData()
return {
props: {
data,
},
}
}When I commented const data = getData(), Next started giving me the error 'fs' module not found because fs was the first module I imported in lib/data.
It might happen with any other Node library you import first.
This happens because anything in getStaticProps() is just called when ran in a server environment, but if we don’t invoke the Node.js function in there, Next.js can’t know that.
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