Unicode normalization using Google Apps Script

Overview This is a script for converting strings from NFD (Normalization Form Decomposition) to NFC (Normalization Form Composition) using Google Apps Script. Description Here, I would like to introduce a script for the unicode normalization using Google Apps Script. There are the characters with ゙ which is the voiced dot and the characters with ゚ which is the semi-voiced dot in Japanese language. When these are used for some applications,