On: On leading underscores and names reserved by the C...

[WorldMaker]

One additional fun thing to note is that despite "private" already being reserved as a keyword TC-39 when they did somewhat recently add private fields to classes a few years back decided on "hash names" over the private keyword.

    class Example {
      #privateFieldName
    }

Rather than:

    class Example {
      private privateFieldName
    }

The debate on that was pretty interesting.