Property Initializers of Class

[Rokt33r]

class KeyBinding {
  static currentIndex = 1 // <-- This

  constructor(source, command, keystrokes, selector, priority) {
    this.source = source;
    this.command = command;
    this.keystrokes = keystrokes;
    this.priority = priority;
    this.keystrokeArray = this.keystrokes.split(" ");
    this.keystrokeCount = this.keystrokeArray.length;
    this.selector = selector.replace(/!important/g, "");
    this.specificity = calculateSpecificity(selector);
    this.index = this.constructor.currentIndex++;
  }
...
}

Will this feature be available on Standard?

[dcousens]

@Rokt33r what do you mean?

If ESLint can parse it, then it is "supported".
But I don't think we have any specific rules related to it yet...

edit: just realised you might have meant the static initialiser specifically... in which case, there was an issue for that around here somewhere...

[Rokt33r]

@dcousens Thanks for your comment.
Yes, I always got an error, Parsing error: Unexpected token =, when I using the static initializer.
Btw,I found the answer. It seems to need babel-eslint as a parser to using this syntax.

[feross]

If you're using experimental JavaScript features (which I personally don't advise doing), then you'll need babel-eslint. Once a feature reaches stage-4, ESLint and standard will support it, but not before then!