I added $filter date query to retrieve items "expire_date" greater than today.
this.props.httpClient.get(`.../items?&$filter=expire_date ge datetime ` + Date.now() + `&$top=10`,
SPHttpClient.configurations.v1)
I tried Date.now().toString() also see same exception in console;
../items?&$filter=StartDate%20ge%20datetime%201486023536535&$top=10 400 (Bad Request)
In ReactJs, i can get current date with Date.now(), but cant figure how to use it correct format in filter query