System Initiative

import isPromise from 'is-promise'; // see https://www.npmjs.com/package/no-try for inspiration // although their focus was not on the typing... // this is more about avoiding an explicitly typed `let thing: TypeOfThingFromInsideTry;` above the try/catch scope /** try-catch alternative that exposes a _typed response_ rather than having it stuck in the try's scope */ export async function tryCatch<T>( tryFn: () => T | Promise<T>, catchFn: (e: any) => void | Promise<void>, ): Promise<T | undefined> { try { return await tryFn(); } catch (err) { const catchResult = catchFn(err); if (isPromise(catchResult)) { await catchResult; } } }