Example of using globals + namespace + interface

[basickarl]

Hello! I'm trying to convert my TypeScript to JavaScript + JSDoc but can't seem to get around some things. Unfortunately the examples on more advanced JSDoc are pretty scarce, I'm wondering if anyone could help translate the following into JSDoc:

declare global {
    namespace jest {
        interface Matchers<R> {
            toBeWithMessage(result: boolean, message: string): R;
        }
    }
}

I've so far:

/**
 * @namespace jest
 */

/**
 * @interface Matchers
 * @memberof jest
 */

/**
 * @function
 * @name Matchers#toBeWithMessage
 * @param {boolean} result
 * @param {string} message
 */

Or is it correct? Unfortunetly TypeScript oes not support @interface or any other advanced features https://www.typescriptlang.org/docs/handbook/jsdoc-supported-types.html as stated.