TypeScript does not support bigint literals in type literal keys

[lucacasonato]

🔎 Search Terms

• type literal
• bigint literal
• type literal key

🕗 Version & Regression Information

5.4.5

⏯ Playground Link

https://www.typescriptlang.org/play/?#code/KYDwDg9gTgLgBDAnmYcCCcC8cDeAoOQuASwBNgA7GALgSgFdgAaAogIgGcYo3bvGWROAEY+DZq0LCKtAGYBDADYdgeAL4BuIA

💻 Code

export type A = {
    ident: true,
    "str": true,
    1: true,
    1n: false
};

🙁 Actual behavior

Property or signature expected.
';' expected.
Declaration or statement expected.

🙂 Expected behavior

1n is parsed correctly.

Additional information about the issue

No response

[MartinJohns]

Duplicate of #35982.