typescript/no-useless-empty-export Correctness
What it does
Disallow empty exports that don't change anything in a module file.
Why is this bad?
An empty export {} statement is sometimes useful in TypeScript code to turn a file that would otherwise be a script file into a module file. Per the TypeScript Handbook Modules page:
In TypeScript, just as in ECMAScript 2015, any file containing a top-level import or export is considered a module. Conversely, a file without any top-level import or export declarations is treated as a script whose contents are available in the global scope (and therefore to modules as well).
However, an export {} statement does nothing if there are any other top-level import or export statements in a file.
This rule reports an export {} that doesn't do anything in a file already using ES modules.
Example
Examples of incorrect code for this rule:
export const value = "Hello, world!";
export {};Examples of correct code for this rule:
export const value = "Hello, world!";