Sibling namespace missing name from import in allowJs declaration

[JoshuaKGoldberg]

TypeScript Version: 4.0.0-dev.20200528

Search Terms: javascript declaration js dot array notation namespace

Code

index.js:

export const colors = {
 royalBlue: "#6400e4",
};

export const brandColors = {
 purple: colors.royalBlue,
};

Expected behavior:

When compiled with tsc --allowJs --declaration --emitDeclarationOnly index.js, it should export:

export namespace colors {
 export const royalBlue: string;
}
export namespace brandColors {
 import purple = colors.royalBlue;
 export { purple };
}

Actual behavior:

Instead, we get:

export namespace colors {
 export const royalBlue: string;
}
export namespace brandColors {
 import purple = royalBlue;
 export { purple };
}

Note the import purple = royalBlue;. It's missing colors..

Compiler Options

{
 "compilerOptions": {
 "noImplicitAny": true,
 "strictFunctionTypes": true,
 "strictPropertyInitialization": true,
 "strictBindCallApply": true,
 "noImplicitThis": true,
 "noImplicitReturns": true,
 "alwaysStrict": true,
 "esModuleInterop": true,
 "checkJs": true,
 "allowJs": true,
 "declaration": true,
 "experimentalDecorators": true,
 "emitDecoratorMetadata": true,
 "moduleResolution": 2,
 "target": "ES2017",
 "jsx": "React",
 "module": "ESNext"
 }
}

Playground Link: Provided

Related Issues: The closest issues I could find were #36270 and #33626...

[weswigham]

Looks like this is fixed in our latest nightlies. Probably by one of the refactors in #38982.