unicorn/no-empty-file

A file without code does nothing. It's usually left over from a refactor, or someone created it and never filled it in. It still shows up in searches and in the file tree, and importing it works but gives you nothing.

A file counts as empty if it only has whitespace, comments, directives such as "use strict", lone semicolons, or empty blocks.

Configure

Off by default. To turn it on:

[lint.rules]
"unicorn/no-empty-file" = "error" # or "warn"

Examples

Reported:

// TODO: move the date helpers here

"use strict";

Not reported:

export function formatDate(date) {
  return date.toISOString().slice(0, 10);
}

A file with a /// comment isn't reported, because /// <reference> does something in TypeScript:

/// <reference types="bun" />

export {} is code. It makes the file a module:

export {};