My guess is replacing /([A-Z])/
with /([a-z])([A-Z])/
and ' $1'
with '$1 $2'
"MyCamelCaseString"
.replace(/([a-z])([A-Z])/g, '$1 $2');
/([a-z0-9])([A-Z])/
for numbers counting as lowercase characters
console.log("MyCamelCaseStringID".replace(/([a-z0-9])([A-Z])/g, '$1 $2'))