rsnext/packages/next/lib/resolve-from.ts
JJ Kasper ec25b4742b
Add handling for auto installing TypeScript deps and HMRing tsconfig (#39838)
This adds handling for auto-detecting TypeScript being added to a project and installing the necessary dependencies instead of printing the command and requiring the user run the command. We have been testing the auto install handling for a while now with the `next lint` command and it has worked out pretty well. 

This also adds HMR handling for `jsconfig.json`/`tsconfig.json` in development so if the `baseURL` or `paths` configs are modified it doesn't require a dev server restart for the updates to be picked up. 

This also corrects our required dependencies detection as previously an incorrect `paths: []` value was being passed to `require.resolve` causing it to fail in specific situations.

Closes: https://github.com/vercel/next.js/issues/36201

### `next build` before

https://user-images.githubusercontent.com/22380829/186039578-75f8c128-a13d-4e07-b5da-13bf186ee011.mp4

### `next build` after


https://user-images.githubusercontent.com/22380829/186039662-57af22a4-da5c-4ede-94ea-96541a032cca.mp4

### `next dev` automatic setup and HMR handling

https://user-images.githubusercontent.com/22380829/186039678-d78469ef-d00b-4ee6-8163-a4706394a7b4.mp4


## Bug

- [x] Related issues linked using `fixes #number`
- [x] Integration tests added
- [x] Errors have helpful link attached, see `contributing.md`
2022-08-23 13:16:47 -05:00

55 lines
1.2 KiB
TypeScript

// source: https://github.com/sindresorhus/resolve-from
import fs from 'fs'
import path from 'path'
import isError from './is-error'
const Module = require('module')
export const resolveFrom = (
fromDirectory: string,
moduleId: string,
silent?: boolean
) => {
if (typeof fromDirectory !== 'string') {
throw new TypeError(
`Expected \`fromDir\` to be of type \`string\`, got \`${typeof fromDirectory}\``
)
}
if (typeof moduleId !== 'string') {
throw new TypeError(
`Expected \`moduleId\` to be of type \`string\`, got \`${typeof moduleId}\``
)
}
try {
fromDirectory = fs.realpathSync(fromDirectory)
} catch (error: unknown) {
if (isError(error) && error.code === 'ENOENT') {
fromDirectory = path.resolve(fromDirectory)
} else if (silent) {
return
} else {
throw error
}
}
const fromFile = path.join(fromDirectory, 'noop.js')
const resolveFileName = () =>
Module._resolveFilename(moduleId, {
id: fromFile,
filename: fromFile,
paths: Module._nodeModulePaths(fromDirectory),
})
if (silent) {
try {
return resolveFileName()
} catch (error) {
return
}
}
return resolveFileName()
}