tibetan-normalize

const tibetanNormalize = require('tibetan-normalize);

const tibetanString = '\u0f43';
const normalizationMode = 'NFKD'; // It can be 'NFD', 'NFKD'. Lowercase is ok.

tibetanNormalize(tibetanString, normalizationMode); 
// return '\u0f42\u0fb7'