orderspec refactor for server and web

src/misc.js

@@ -59,3 +59,21 @@ export function routeInverted(route) {
     return route && (route.token0 === s.tokenA) === s.inverted
 }
 
+export function intervalString(seconds) {
+    if( seconds < 1 )
+        return 'now'
+    else if( seconds < 60 )
+        return `${seconds} seconds`
+    else if( seconds < 3600 )
+        return `${(seconds/60).toFixed(1)} minutes`
+    else if( seconds < 86400 )
+        return `${(seconds/3600).toFixed(1)} hours`
+    else
+        return `${(seconds/86400).toFixed(1)} days`
+}
+
+const _dateFormat = new Intl.DateTimeFormat( undefined, {dateStyle: 'medium', timeStyle: 'short'})
+export function dateString(seconds) {
+    const date = new Date(seconds*1000)
+    return _dateFormat.format(date)
+}