format.space not working

I am trying to use the format.space settings but it does not seem to be working. I have the below in my settings.json file and I am not getting the space before and after the key characters. In particular for JavaScript and the + sign.

"format.space": {
"language": {
"php": {
".": {
"before": 1,
"after": 1
}
},
"javascript": {
"+": {
"before": 1,
"after": 1
}
},