DashCase and CamelCase intrinsic string types, or similar

Search Terms

dashcase snakecase

Suggestion

It would be great to also have DashCase and CamelCase and similar!

Use Cases

It is common in DOM libs to map from JS camelCase properties to DOM dash-case attributes (f.e. el.fooBar = 123 and <el foo-bar="123">), or CapitalizedClass names to dash-case custom element names (f.e. class FooBar extends HTMLElement and <foo-bar>).

Examples

type T1 = Dashcase<'fooBar' | 'BarBaz'> // 'foo-bar' | 'bar-baz'
type T2 = Camelcase<'foo-bar' | 'bar-baz'> // 'fooBar' | 'barBaz'

Or similar.

Checklist

My suggestion meets these guidelines:

• This wouldn't be a breaking change in existing TypeScript/JavaScript code
• This wouldn't change the runtime behavior of existing JavaScript code
• This could be implemented without emitting different JS based on the types of the expressions
• This isn't a runtime feature (e.g. library functionality, non-ECMAScript syntax with JavaScript output, etc.)
• This feature would agree with the rest of TypeScript's Design Goals.

要求された DashCase と CamelCase の例から始め、TypeScript が現在 intrinsic string types をどのように定義しているかを確認してください。実装を提案する前に、大文字・小文字のセマンティクスと「または類似」の範囲を明確にしてください。受け入れられた型レベルの変換がサポートされ、テストが issue の例をカバーしていれば完了です。