simplify tools imports

tools/omit.ts

@@ -1,7 +1,7 @@
-export default function omit<T extends Record<string, any>>(
+export const omit = <T extends Record<string, any>>(
 	obj: T,
 	propToRemove: keyof T,
-): Omit<T, typeof propToRemove> {
+): Omit<T, typeof propToRemove> => {
 	const { [propToRemove]: _, ...rest } = obj;
 	return rest;
-}
+};