FIXES: alias pm for polymeter

[bwagner]

(return statement was missing)

I was looking at polymeter and when replacing polymeter by pm in the MiniRepl, I got error "Cannot read properties of undefined (reading 'note')".

FIXES: Issue #532

[yaxu]

Aha thanks for the fix!

While you're here, it would probably be better to just have export pm = polymeter; instead of the function

[bwagner]

I had tried that before, but it causes an error at startup:

pattern.mjs?t=1679428469545:1142 Uncaught (in promise) ReferenceError: Cannot access 'pm' before initialization
    at pattern.mjs?t=1679428469545:1142:3

This error stems from this code:

// methods that create patterns, which are added to patternified Pattern methods
// TODO: remove? this is only used in old transpiler (shapeshifter)
Pattern.prototype.factories = {
  pure,
  stack,
  slowcat,
  fastcat,
  cat,
  timeCat,
  sequence,
  seq,
  polymeter,
  pm,
  polyrhythm,
  pr,
};
// the magic happens in Pattern constructor. Keeping this in prototype enables adding methods from the outside (e.g. see tonal.ts)

So I shifted export pm = polymeter; before that Pattern.prototype.factories statement.

[bwagner]

pushed.