SyntaxError Export is not defined when exporting variable inside a module declaration

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Your Environment

• Prettier version: 2.8.4
• node version: 19.2.0
• package manager: npm@8.19.3
• IDE: vscode

Describe the bug

in typescript, when exporting a variable declared within a declare module block, prettier fails with a SyntaxError

To Reproduce

declare module 'foo' {
    const a: 1
    export { a }
}

Expected behavior
no error

Error log

> prettier asdf.ts
asdf.ts[error] asdf.ts: SyntaxError: Export 'a' is not defined. (3:13)
[error]   1 | declare module 'foo' {
[error]   2 |     const a: 1
[error]   3 |     export { a }
[error]   4 | }
[error]   5 |