swc/crates/swc_ecma_parser/tests/tsc/circularReference.ts

// @Filename: foo1.ts
import foo2 = require('./foo2');
export module M1 {
	export class C1 {
		m1: foo2.M1.C1;
		x: number;
		constructor(){
			this.m1 = new foo2.M1.C1();
			this.m1.y = 10; // OK
			this.m1.x = 20; // Error
		}
	}
}

// @Filename: foo2.ts
import foo1 = require('./foo1');
export module M1 {
	export class C1 {
		m1: foo1.M1.C1;
		y: number
		constructor(){
			this.m1 = new foo1.M1.C1();
			this.m1.y = 10; // Error
			this.m1.x = 20; // OK

			var tmp = new M1.C1();
			tmp.y = 10; // OK
			tmp.x = 20; // Error			
		}
	}
}