ESLint Rule: Underscored backing property names.

[paul-go]

Underscores should only be allowed when they're used as the backing field of a getter property. They should be disallowed in all other cases. For example, the following is valid:

class MyClass
{
  get value()
  {
    return this._value;
  }
  private _value = 0;
}

The name of the backing field should be identical to the name of the corresponding property, with the addition of the underscore prefix.

Also, the backing property with the underscore needs to be placed directly after the actual property in the file.