Detecting Global DFL

[FineWolf]

Since all plugins are supposed to be compiled as IIFEs, you can test if they are using the global DFL or not by analyzing the output binary.

A cheap but good enough way of doing so if the following:

tail -n1 dist/index.js | grep -Eq '\(([^)]+,\s*)?((globalThis|window)\.)?DFL(,[^)]+)?\)+;?$'

This verifies that the last line of the script self-executes itself by passing in DFL. An exit status of 0 means that global DFL is used, 1 means it isn't.

It should account for different ways of writing IIFEs (not just rollup's).