$ npm install nysiis-phonetics

The New York State Identification and Intelligence System Phonetic Code, commonly known as NYSIIS, is a phonetic algorithm devised in 1970 as part of the New York State Identification and Intelligence System (now a part of the New York State Division of Criminal Justice Services). It features an accuracy increase of 2.7% over the traditional Soundex algorithm.

See Wikipedia

var nysiis = require( 'nysiis-phonetics' )

• String value
• Boolean truncate, defaults to true