Salsa does not honour JSDoc on prototype assignments

[alexdima]

Testing #2218

function Person() {
    this.name = 'John';
}

/**
 * @param {string} to
 */
Person.prototype.sayHi = function(to) {
    console.log('Hi ' + to + ', I\'m ' + this.name);
}

/**
 * @param {string} to
 */
function sayHi(to) {

}

[billti]

This is tracked by microsoft/TypeScript#6552

[egamma]

closing