JSDoc property on typedef can only extend `Object` type

[bmeck]

TypeScript Version: 3.4.0-dev.201xxxxx

Search Terms: typedef jsdoc widen extend property

Code

/**
 * @typedef {Array} A
 * @property {string} a
 */
/**
 * @type {A}
 */
var a;
a.a; // Property 'a' does not exist on type 'any[]'.
/**
 * @typedef {any[]} B
 * @property {string} b
 */
/**
 * @type {B}
 */
var b;
b.b; // Property 'b' does not exist on type 'any[]'.
/**
 * @typedef {{}} C
 * @property {string} c
 */
/**
 * @type {C}
 */
var c;
c.c; // Property 'c' does not exist on type '{}'.
/**
 * @typedef {Object} O
 * @property {string} o
 */
/**
 * @type {O}
 */
var o;
o.o; // string

Expected behavior:

Other types to behave similarly? I thought non-alias typedefs would act like

type __X = {}; // from @typedef type expression
interface X extends __X {
    x: string // from @property
}

Either way of making it not work for object or allowing it to work for other types seems reasonable.

Actual behavior: Object is treated as a special type that doesn't behave like other types. See comments in example for errors when using other types.

Playground Link: it is JSDoc, can't.

Related Issues: n/a