forked from sashin/sashinexists
27 lines
264 B
TypeScript
Executable File
27 lines
264 B
TypeScript
Executable File
|
|
/* MAIN */
|
|
|
|
const once = <T> ( fn: (() => T) ): (() => T) => {
|
|
|
|
let called = false;
|
|
let result: T;
|
|
|
|
return (): T => {
|
|
|
|
if ( !called ) {
|
|
|
|
called = true;
|
|
result = fn ();
|
|
|
|
}
|
|
|
|
return result;
|
|
|
|
};
|
|
|
|
};
|
|
|
|
/* EXPORT */
|
|
|
|
export default once;
|