tryError API Documentation v0.0.1-alpha.1

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tryError API Documentation / tryChain

Function: tryChain()

function tryChain<T, U, E1, E2>(result, chainer): TryResult<U, E1 | E2>;

Defined in: sync.ts:207

Chain operations that return TryResult, short-circuiting on errors

Type Parameters

T

T

U

U

E1

E1 extends TryError<string>

E2

E2 extends TryError<string>

Parameters

result

TryResult<T, E1>

The result to chain from

chainer

(value) => TryResult<U, E2>

Function that takes success value and returns new TryResult

Returns

TryResult<U, E1 | E2>

Chained result or first error encountered

Example

const result = trySync(() => JSON.parse(jsonString))
  |> tryChain(obj => trySync(() => validateUser(obj)))
  |> tryChain(user => trySync(() => saveUser(user)));