feat: add objects and arrays in javascript

[dylanbyars]

#93

Add queries for a few common shapes of arrays and objects.

const foo = {
  bar: {
    baz: {
      bip: 'bop' // cursor on this line
    }
  }
}

{} foo > {} bar > {} baz > {} bip

foo = {
  yabba: {
    dabba: {
      doo: 'wilma' // cursor on this line
    }
  }
}

{} foo > {} yabba > {} dabba > {} doo

foo.zip = {
  zop: 'wow' // cursor on this line
}

{} foo.zip > {} zop

const yo = [1,2,3] // cursor after `=`

[] yo

Some of these queries look very similar. I feel like there's probably some way to make these a bit more clever. For example, the object literal and array queries are identical besides the selector on object or array.

[SmiteshP]

Some of these queries look very similar. I feel like there's probably some way to make these a bit more clever. For example, the object literal and array queries are identical besides the selector on object or array.

Yeah, we can use the same query for both captures using [object array] syntax, which mean object or array node. But its more readable to keep them separate so its fine 😄

[SmiteshP]

Thanks for the PR! LGTM 😄