Function isValid

docs/app/js/sanddance-app.js:109036–109036

(_)

    (0, _vegaUtil.error)("No HTTP fetch method available.");
}
const isValid = (_)=>_ != null && _ === _;
const isBoolean = (_)=>_ === "true" || _ === "false" || _ === true || _ === false;
const isDate = (_)=>!Number.isNaN(Date.parse(_));
const isNumber = (_)=>!Number.isNaN(+_) && !(_ instanceof Date);