fix[attempt]: add default type for error

lambdalisue · lambdalisue · commit d48f72c28451 · 2025-01-30T23:27:49.000+09:00
diff --git a/attempt.ts b/attempt.ts
@@ -16,10 +16,10 @@ export type Result<T, E> = Success<T> | Failure<E>;
  * console.log(attempt(() => { throw "err" })); // ["err", undefined]
  * ```
  */
-export function attempt<T, E>(fn: () => T): Result<T, E> {
+export function attempt<T, E = unknown>(fn: () => T): Result<T, E> {
   try {
     return [undefined, fn()];
   } catch (e) {
-    return [e, undefined];
+    return [e as E, undefined];
   }
 }

Original file line number	Diff line number	Diff line change
`@@ -16,10 +16,10 @@ export type Result<T, E> = Success<T> \| Failure<E>;`
`16`	`16`	`* console.log(attempt(() => { throw "err" })); // ["err", undefined]`
`17`	`17`	* ```
`18`	`18`	`*/`
`19`		`-export function attempt<T, E>(fn: () => T): Result<T, E> {`
	`19`	`+export function attempt<T, E = unknown>(fn: () => T): Result<T, E> {`
`20`	`20`	`try {`
`21`	`21`	`return [undefined, fn()];`
`22`	`22`	`} catch (e) {`
`23`		`- return [e, undefined];`
	`23`	`+ return [e as E, undefined];`
`24`	`24`	`}`
`25`	`25`	`}`