Don't strip comments (both inline and end of line)

[twolfson]

Our latest iteration is better than our first as it preserves node/token linkages. However, we are currently stripping out the content between VariableDeclarator's. We should preserve this information by some means (e.g. generating a new betweenDeclarationTokens set for each declaration pair).

Here are some test cases:

var a, b;

to

var a; var b;

---

var a, b,
    c = 1;

to

var a; var b;
var c = 1;

---

var a, /* hi */ b;

to

var a; /* hi */ var b;

---

var a,/* hi */ b;

to

var a;/* hi */ var b;

---

var a, b, // hello
    c = 1;

to

var a; var b; // hello
var c = 1;

[twolfson]

After thinking about this more, we should always normalize to 1 var per line to keep our sanity. Here are some updated cases:

After thinking about this more, we should always normalize to 1 var per line to keep our sanity. Here are some updated cases:

var a, b;

to

var a;
var b;

---

var a /* sup */, b;

to

var a; /* sup */
var b;

---

var a, // sup
    b;

to

var a; //sup
var b;

---

var a // sup
  , b;

to

var a; //sup
var b;

[twolfson]

Started on this but stopping due to draining time and other priorities.

https://github.com/twolfson/esformatter-var-each/tree/dev/allow.comments

[twolfson]

If we ever resume this, my parting thoughts are:

• Our current implementation links declarations as their ends are defined
  • This was practical for the "in between" logic where we are defining new heads/tails for these chunks
• However, when we move to reuse, it makes more sense to define the heads/tails independently
• Then link them together in a final step. As this removes the possibility for the next head from not existing when we want to link it.

To rephrase:

1. Set up VariableDeclaration nodes and attach to inner VariableDeclarator (e.g. parent/child)
2. Connect VariableDeclaration nodes prev/next and to parent BlockStatement/Program
3. Set up VariableDeclaration tokens and attach to inner VariableDeclarator (e.g. startToken.prev/endToken.next)
4. Connect VariableDeclaration tokens prev/next (unless HEAD/TAIL, in which case trade places with original varDeclaration.startToken/varDeclaration.endToken)