The JS plugins work in Biab using ReaPlugs you just load reajs.dll
The ReaPlugs are installed to
C:\Program Files\VSTplugins64\ReaPlugs\
you can set it to use C:\Program Files\VSTplugins64\ReaPlugs\JS\Effects
or it will use your Reaper effects folder
AppData\Roaming\REAPER\Effects

see reajs_info.txt

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