Get lex file numbers of WordNet as constants (of name).
Use wordnet-lexfilenamearray, if lex file name is needed.
Use wordnet-lexfilecontentarray, if content details of lex file is needed.
const lexFileNumberConstants = require('wordnet-lexfilenumberconstants');
// lexFileNumberConstants.<CONSTANT_NAME>
lexFileNumberConstants.ADJ_ALL;
// 0
lexFileNumberConstants.ADJ_PERT;
// 1
lexFileNumberConstants.ADJ_PPL;
// 44