vite-import-windows.md

Using absolute paths and vite.

Static import

✔️ Posix style path

This is ok because the import is processed by vite or rollup and node never sees this.

import "C:/users/edivados/index.js";
await import("C:/users/edivados/index.js");

	resolver	mode	sees	comment
✔️	vite	dev	/@fs/C:/users/edivados/index.js	/@fs/ gets added by vite. vite:resolve plugin removes /@fs/ and normalizes to slash. /@fs/ skips checking if the file exists.
✔️	rollup	build	?	valid Windows path
✔️	node	runtime	bundler output

✔️ Windows style path

This is ok because the import is processed by vite or rollup and node never sees this.

import "C:\\users\\edivados\\index.js";
await import("C:\\users\\edivados\\index.js");

	resolver	mode	sees	comment
✔️	vite	dev	/@fs/C:/users/edivados/index.js	/@fs/ gets added by vite + normalization. vite:resolve plugin removes /@fs/ and normalizes to slash. /@fs/ skips checking if the file exists.
✔️	rollup	build	?	valid Windows path
✔️	node	runtime	bundler output

✔️ Leading slash (Posix style path)

import "/C:/users/edivados/index.js";
await import("/C:/users/edivados/index.js");

	resolver	mode	sees	comment
✔️	vite	dev	/@fs/C:/users/edivados/index.js
✔️	rollup	build	?	valid Windows path
✔️	node	runtime	bundler output

Dynamic import

✔️ Conditional

// path = C:/users/edivados/index.js
if (import.meta.env.DEV) path = posix.resolve("/@fs", path);
else path = pathToFileURL(path).href;

await import(path)

	resolver	mode	sees	comment
✔️	vite	dev	/@fs/C:/users/edivados/index.js	vite:resolve plugin removes /@fs/ and normalizes to slash. /@fs/ skips checking if the file exists.
✔️	rollup	build		noop
✔️	node	runtime	file:///C:/users/edivados/index.js

✔️ Leading slash (Posix style path)

// path = C:/users/edivados/index.js
path = posix.resolve("/", path);
await import(path);

	resolver	mode	sees	comment
✔️	vite	dev	/C:/users/edivados/index.js	vite:resolve plugin removes the leading slash, calls resolve(root, path) and also checks if the file exists.
✔️	rollup	build		noop
✔️	node	runtime	file:///C:/users/edivados/index.js	ok?

❌ Posix style path

// path = C:/users/edivados/index.js
await import(path)

	resolver	mode	sees	comment
❌	vite	dev	C:/users/edivados/index.js	uses nodeImport and fails
✔️	rollup	build		noop
❌	node	runtime	C:/users/edivados/index.js	has to be a file url

❌ Windows style path

// path = C:\\users\\edivados\\index.js
await import(path)

	resolver	mode	sees	comment
❌	vite	dev	C:\users\edivados\index.js	uses nodeImport and fails
✔️	rollup	build		noop
❌	node	runtime	C:\users\edivados\index.js	has to be a file url