[ts-5.5-rc] Import elided in spite of being use in declarations

[dragomirtitian]

🔎 Search Terms

import elided declarations

🕗 Version & Regression Information

• This changed between versions 5.5-beta and 5.5-rc

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💻 Code

// @declaration: true
// @filename: utils.ts
export interface Evt { }


// @filename: decl.ts
import {Evt} from './utils'
export const o = <T>(o: T) => () : T => null!

// @filename: main.ts
import { o }  from './decl'
import { Evt }  from './utils'

export const f = { o: o({ v: null! as Evt}) };

🙁 Actual behavior

main.d.ts contains f: { o: () => { v: Evt; }; } but the import for Evt is elided from the declaration file.

🙂 Expected behavior

Evt should be preserved in the declaration file.

Additional information about the issue

No response