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Function: tryCatchAsync()

Call Signature​

tryCatchAsync<T>(fn): Promise<Result<T, unknown>>

Defined in: result/constructors/index.ts:109

Wraps an async function in a Result, catching any errors.

Type Parameters​

T​

T

Parameters​

fn​

() => Promise<T>

Async function that may throw

Returns​

Promise<Result<T, unknown>>

Promise of Result containing either the value or error

Example​

const fetchUser = async (id: string) =>
  tryCatchAsync(async () => {
    const res = await fetch(`/api/users/${id}`)
    return res.json()
  })

const result = await fetchUser('123')
// => Ok({ name: 'John' }) or Err(NetworkError)

Call Signature​

tryCatchAsync<T, E>(fn, mapError): Promise<Result<T, E>>

Defined in: result/constructors/index.ts:131

Wraps an async function in a Result with custom error mapping.

Type Parameters​

T​

T

E​

E

Parameters​

fn​

() => Promise<T>

Async function that may throw

mapError​

(error) => E

Function to transform the caught error

Returns​

Promise<Result<T, E>>

Promise of Result containing either the value or mapped error

Example​

const fetchUser = async (id: string) =>
  tryCatchAsync(
    async () => {
      const res = await fetch(`/api/users/${id}`)
      if (!res.ok) throw new Error(`HTTP ${res.status}`)
      return res.json()
    },
    (e) => ({ code: 'FETCH_ERROR', message: String(e) })
  )