.[index] and {.[index] === xxx} for array like .prop and {.prop === xxx} for object.

[xpol]

For object we have:

const object = {
  categories: [
    [
      {name: 'apple', image: 'apple.jpg'},
      {name: 'pear', image: 'pear.jpg'}
    ],
    [
      {name: 'keyboard', image: 'keyboard.jpg'},
      {name: 'mouse', image: 'mouse.jpg'}
    ]
  ]
}


describe('jspath', () => {
  it('allows query object .name and return .image', () => {
    const r = JSPath.apply('.categories..{.name === "apple"}.image', object)
    expect(r).toBe(['apple.jpg'])
  })
  it('allows query object props and return parent', () => {
    const r = JSPath.apply('.categories{..name === "apple"}[0]', object)
    expect(r).toEqual([{'name': 'apple', 'image': 'apple.jpg'}, {'name': 'pear', 'image': 'pear.jpg'}])
  })
})

When it come to array how can I do same queries? I have tried:

const array = {
  categories: [
    [
      ['apple', 'apple.jpg'],
      ['pear', 'pear.jpg']
    ],
    [
      ['keyboard', 'keyboard.jpg'],
      ['mouse', 'mouse.jpg']
    ]
  ]
}


  it('should allows query array by value at index (.[0]) and return value at another index (.[1])', () => {
    const r = JSPath.apply('.categories..{.[0] === "apple"}.[1]', array)
    expect(r).toBe(['apple.jpg']) // fails...
  })
  it('should allows query array by index and return parent object', () => {
    const r = JSPath.apply('.categories{..[0] === "apple"}[0]', array)
    expect(r).toEqual([['apple', 'apple.jpg'], ['pear', 'pear.jpg']]) // coincidentally works... 
  })
})

1. How can I do the same query when inner object become array.
2. Would it be possible to make .[index] and {.[index] === xxx} works like .prop and {.prop === xxx} for object?

[dfilatov]

Arrays have special meaning in jspath, they are treated as nodesets.
So when .categories.. is applied, result will be ['apple', 'apple.jpg', 'pear', 'pear.jpg', 'keyboard','keyboard.jpg', 'mouse', 'mouse.jpg']. There is no way (in the current implementation) to determine what [0] should be.