JSDoc function type doesn't parse jsdoc function types as parameters

[sandersn]

In other words, higher order functions don't work using only closure syntax:

/** @type {function(string[], function(string): string): string[]} */
var stringmap = function(strings, f) {
    // ...
}

Expected behavior:
stringmap: (arg0: string[], arg1: (arg0: string) => string) => string[]

Actual behavior:
Parse error at the second function keyword: "Parameter expected".