Nested parameters description doesn't work with arrow functions

[jiri-vyc]

• I have checked issues with bug label and found no duplicates

Expected Behavior

TypeDoc should generate description for nested "options" parameter. E.g. options.first, options.second and options.third in options: { first: string, second: number, third: (a: number) => number }

Actual Behavior

Doesn't generate description for nested parameters. Only for the "options" object.

Steps to reproduce the bug

Code to document:

class Bar {
    /**
     * Test method with object param
     * @param options Describing the options param
     * @param options.first A description of the first property of the options param
     */
    public fooArrow = (options: { first?: string, second: number, third: (a: number) => number }) => {

    }
}

Typedoc command:
typedoc --out docs index.ts

Typedoc.json:

{
    "mode": "modules",
    "out": "docs"
}

Should generate documentation with description of option.first nested parameter, instead generates only for options.

It works perfectly well with the function written normally, but arrow notation doesn't work. I.e.:

class Bar {
    /**
     * Test method with object param
     * @param options Describing the options param
     * @param options.first A description of the first property of the options param
     */
    public fooArrow (options: { first?: string, second: number, third: (a: number) => number })  {

    }
}

generates

options: object
Describing the options param

Optional first?: undefined | string
A description of the first property of the options param

while

class Bar {
    /**
     * Test method with object param
     * @param options Describing the options param
     * @param options.first A description of the first property of the options param
     */
    public fooArrow = (options: { first?: string, second: number, third: (a: number) => number }) => {

    }
}

generates only

options: object
Describing the options param

Optional first?: undefined | string

Complete sample code to reproduce the bug and sample output documentation here: https://github.com/jiri-vyc/typedoc-test

(with comparison with standard and arrow function notation)

This is afaik not a duplicate of #987 nor #497

Environment

• Typedoc version: 0.14.2
• Node.js version: v10.15.1
• OS: Windows 10 Pro

[fc]

FYI, the repro ( jiri-vyc/typedoc-test ) is missing a package.json

[jiri-vyc]

@fc Added.

Also, I found an issue describing the same problem, including temporary workaround: #522, so this can be probably closed as duplicate.

[Gerrit0]

In 0.20, this appears to work as expected. The first codeblock generates this: