Error BS1091 Incorrectly Flags "#if not <CONST>"

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Pretty simple to test in any app, see the screenshot.

I've had one of these #if nots in our repo for a long time, but I did a quick sanity test too and verified that the Roku OS can process either if/else path successfully.

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Line Source:

brighterscript/src/preprocessor/Preprocessor.ts

Line 183 in 4bd4a5f

if (this.constants.has(nameLower)) {

Possible Fix (throwing this out there at 6:40am, so take with salt):

  case TokenKind.Identifier:
    // added replaceAll to remove 1 or more "not"
    const nameLower = token.text?.toLowerCase().replaceAll("not ", "");

    if (this.constants.has(nameLower)) {
      return !!this.constants.get(nameLower);
    }