Function fromThrowable

fromThrowable<T>(fn: () => T): ResultType<T, unknown>
Execute a synchronous function and capture thrown exceptions as err. Without onError, the raw thrown value is surfaced with type unknown; pass onError to map it into a domain error — the error type is entirely user-controlled.
Type Parameters
- T
Parameters
- fn: () => T
Returns ResultType<T, unknown>
Example
```
const parsed = fromThrowable(
    () => JSON.parse(rawBody) as Order,
    (cause) => ({ code: "INVALID_JSON", cause }),
  )
```
- Defined in result/constructors.ts:46
fromThrowable<T, E>(
fn: () => T,
onError: (cause: unknown) => E,
): ResultType<T, E>
Execute a synchronous function and capture thrown exceptions as err. Without onError, the raw thrown value is surfaced with type unknown; pass onError to map it into a domain error — the error type is entirely user-controlled.
Type Parameters
- T
- E
Parameters
- fn: () => T
- onError: (cause: unknown) => E
Returns ResultType<T, E>
Example
```
const parsed = fromThrowable(
    () => JSON.parse(rawBody) as Order,
    (cause) => ({ code: "INVALID_JSON", cause }),
  )
```
- Defined in result/constructors.ts:47