Isolated declarations quick fix suggests boolean return type for predicates

[bgenia]

🔎 Search Terms

isolated declarations, quick fix, type predicates

🕗 Version & Regression Information

TS 5.5+

⏯ Playground Link

https://www.typescriptlang.org/play/?isolatedDeclarations=true#code/GYVwdgxgLglg9mABDAzgZSgJxmA5gCgDcBDAGxAFMAuRcAazDgHcwBKRAbwChFfFMKUEJiRQAngAcKcYIhLkKiALwrEAIhRYcuNVwC+XIA

💻 Code

function isString(value: unknown) {
    return typeof value === "string"
}

🙁 Actual behavior

Quick fix suggests 'boolean' return type annotation

🙂 Expected behavior

Quick fix should suggest the inferred 'value is string` predicate annotation

Additional information about the issue

No response

[RyanCavanaugh]

cc @danvk