Computed property name is not escaped in declaration emit

🔎 Search Terms

computed property symbol declaration emit

🕗 Version & Regression Information

• This changed between versions 3.7 and 3.8

⏯ Playground Link

https://www.typescriptlang.org/play/?ts=3.7.5#code/MYGwhgzhAEAq0G8BQ1XQgFzBglsaATgKZgAmA9gHYgCe0A2gEQA6GjAugFzQCulOARx5F0NALYAjciADcSAL5IQRDNAAe0ALyIUaerCasOXaAEYFMoA

💻 Code

class T {
    static readonly ["\t"]: unique symbol;
}
let x = {
    [T["\t"]]: 1
};

🙁 Actual behavior

The type of x is emitted as { [T["\t"]]: number; } in declaration files, making the file invalid since the property does not exist on T

🙂 Expected behavior

The escape should be preserved in the property name.

Additional information about the issue

Was introduced by https://github.com/microsoft/TypeScript/pull/18860/commits/8bb7230729f43f1c134f895a535e73c4cd58af3e