Environment

h3: 2.0.0-beta.1

Reproduction

Simply check the declared type:

declare function handleCors(event: H3Event, options: CorsOptions): false | "";

Describe the bug

Description:
handleCors() returns an empty string ("") when handling preflight requests. However, the official example suggests using a truthy check (if (corsRes)), which fails since "" is falsy. This makes the example incorrect and the API unintuitive.

Expected:
Return a truthy sentinel (e.g. true or "handled") to indicate preflight handled, matching the example pattern.

Actual:
Returns falsy sentinel (""), making:

if (corsRes) return corsRes

ineffective.

Additional context

No response

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