in static/plugins/machines.js [7:16]
function split_once(str, splitter) {
// split a string only once (String.split doesn't allow this)
if (typeof str === "string") {
const i = str.indexOf(splitter);
if (i >= 0) {
return [str.slice(0,i), str.slice(i+1)]
}
}
return [str, null]
}