// Get font subsetter classvarFontSubseter=require('@lassehaslev/font-subsetter');// Create instancevarsubsetter=newFontSubseter(filePath,{regex: newRegExp(regex),});// -- Subset -- //// To filesubsetter.subset().toFile(path);// Subset to base64subsetter.subset().toBase64();// -- Other functions -- //// Get all characters matching regexsubsetter.characters();// Get all charcodes matching regexsubsetter.charCodes();