Nested class's private field has inconsistent name in declaration file under watch mode

[alvinleung1996]

Bug Report

🔎 Search Terms

private field declaration

🕗 Version & Regression Information

v3.8.3, v4.5.4, v4.6.0-dev.20220116

⏯ Playground Link

Playground link with relevant code

💻 Code

export function func() {
    return class A {
        #field = ''
    }
}

🙁 Actual behavior

In watch mode, the name of the private field in the declaration file is not consistent after rebuild.

The initial build emits the following declaration:

export declare function func(): {
    new (): {
        "__#1@#field": string;
    };
};

Do some changes in the source file, for example:

export function func() {
    return class A {
        #field = 'a'
    }
}

The output becomes:

export declare function func(): {
    new (): {
        "__#12@#field": string;
    };
};

Undo the change. The output becomes:

export declare function func(): {
    new (): {
        "__#16@#field": string;
    };
};

The number in the emitted private field name seems to increase after each rebuild.

🙂 Expected behavior

The emitted private field name is consistent across rebuild and should be named #private.

export declare function func(): {
    new (): {
        #private;
    };
};

[MartinJohns]

Duplicate of #36548. Used search terms: private emit in:title

Technically your bug is about the identifier changing, the other not... but the identifier being in that format is the actual bug.

[typescript-bot]

This issue has been marked as a 'Duplicate' and has seen no recent activity. It has been automatically closed for house-keeping purposes.