TypeScript generates invalid types if @import tags are spread over multiple lines

[remcohaszing]

🔎 Search Terms

“import”

🕗 Version & Regression Information

• This changed between versions 5.4 and 5.5
• I was unable to test this on prior versions because this feature was introduced in TypeScript 5.5

⏯ Playground Link

https://github.com/remcohaszing/typescript-jsdoc-import-bug

💻 Code

/**
 * @import {
 *   Program
 * } from 'estree'
 */

/**
 * @param {Program} program
 */
export function compile(program) {}

🙁 Actual behavior

TypeScript emits the following type invalid definition:

/**
 * @import {
 *   Program
 * } from 'estree'
 */
/**
 * @param {Program} program
 */
export function compile(program: *   Program): void;
import type { Program } from 'estree';

🙂 Expected behavior

TypeScript emits the following valid type definition:

/**
 * @import {
 *   Program
 * } from 'estree'
 */
/**
 * @param {Program} program
 */
export function compile(program: Program): void;
import type { Program } from 'estree';

Additional information about the issue

This bug does not appear in the playground, only when running tsc locally.