Coverts ASCII characters in the range \u0021-\u007E to their equivalent full-width form (\uFF01-\uFF5E), and vice versa. Also converts between the ASCII space \u0020 and Ideographic Space \u3000.
$ npm install ascii-fullwidth-halfwidth-convert
const AFHConvert = require('ascii-fullwidth-halfwidth-convert');
const converter = new AFHConvert();
const str = 'THE ｑｕｉｃｋ， ＢＲＯＷＮ\u3000fox.';
converter.toFullWidth(str);
//=> 'ＴＨＥ ｑｕｉｃｋ， ＢＲＯＷＮ ｆｏｘ．'
converter.toHalfWidth(str);
//=> 'THE quick, BROWN fox.'
MIT © Sampath Sitinamaluwa