trySync - API reference

API reference › @evolu/common › Result › trySync

function trySync<T, E>(
  fn: () => T,
  mapError: (error: unknown) => E,
): Result<T, E>;

Defined in: packages/common/src/Result.ts:408

Wraps a synchronous function that may throw, returning a Result.

Use this when the thrown value should become a typed, recoverable error for the caller. Do not use it for failures that should terminate the current flow and propagate to a global handler.

Example

const parseJson = (value: string): Result<unknown, ParseJsonError> =>
  trySync(
    () => JSON.parse(value) as unknown,
    (error) => ({ type: "ParseJsonError", message: String(error) }),
  );