in front-end/src/utils/index.js [106:116]
export function getByteLen(val) {
let len = 0
for (let i = 0; i < val.length; i++) {
if (val[i].match(/[^\x00-\xff]/gi) != null) {
len += 1
} else {
len += 0.5
}
}
return Math.floor(len)
}