Refine JSON.stringify return type for booean value

Search Terms

JSON.stringify "true" "false"

Suggestion

I'd like to have additional typings for the return type of JSON.stringify, namely when given a boolean, the return type should be 'true' | 'false'

Use Cases

In React assigning the ARIA boolean attributes requires a boolean-string, currently you have to do:

<div aria-expanded={isExpanded ? 'true' : 'false'}/>

With the change you could simplify that to:

<div aria-expanded={JSON.stringify(isExpanded)}/>

Examples

const r1: 'true' | 'false' = JSON.stringify(true);
// Or if we could have it be even more granular:
const r2a: 'true' = JSON.stringify(true);
const r2b: 'false' = JSON.stringify(false);
``

No file or test path is named in the issue. Start by locating the TypeScript declaration and existing tests for JSON.stringify, then compare boolean inputs with the requested literal return types. Done means the boolean examples type-check with the intended return type while existing stringify behavior remains covered.