Signature for `toLocale[X]String` is missing `Intl.Locale`

[anddoutoi]

Bug Report

The signature for all toLocale[X]String() should be changed to:

toLocaleString(locales?: string | string[] | Intl.Locale | Intl.Locale[], options?: Intl.DateTimeFormatOptions): string;

See locales argument at MDN and 9.2.1 CanonicalizeLocaleList from ECMA-402.

Edit: This works in plain JavaScript.

🔎 Search Terms

• toLocaleString
• toLocaleDateString
• toLocaleTimeString
• Intl.Locale

🕗 Version & Regression Information

• Tested in 4.5.2 and 4.5.4.

⏯ Playground Link

Playground link with relevant code

💻 Code

let now = new Date();
let svSE = new Intl.Locale("sv-SE");

now.toLocaleString(svSE);

🙁 Actual behavior

🙂 Expected behavior

TS should allow for Intl.Locale.