tryError API Documentation v0.0.1-alpha.1

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tryError API Documentation / withFallback

Function: withFallback()

function withFallback<T>(
  primary,
  fallback,
  shouldFallback?
): TryResult<T, TryError<string>>;

Defined in: sync.ts:559

Error recovery pattern - try operation with fallback

Type Parameters

T

T

Parameters

primary

() => T

Primary operation to try

fallback

() => T

Fallback operation if primary fails

shouldFallback?

(error) => boolean

Optional predicate to determine if fallback should be used

Returns

TryResult<T, TryError<string>>

Result from primary or fallback operation

Example

const config = withFallback(
  () => JSON.parse(readFileSync("config.json", "utf8")),
  () => ({ defaultConfig: true }),
  (error) => error.type === "SyntaxError"
);