Added media_aspect_ratio util

app/javascript/gabsocial/utils/media_aspect_ratio.js

@@ -0,0 +1,17 @@
+export const minimumAspectRatio = .8;
+export const maximumAspectRatio = 2.8;
+
+export const isPanoramic = ar => {
+  if (isNaN(ar)) return false;
+  return ar >= maximumAspectRatio;
+}
+
+export const isPortrait = ar => {
+  if (isNaN(ar)) return false;
+  return ar <= minimumAspectRatio;
+}
+
+export const isNonConformingRatio = ar => {
+  if (isNaN(ar)) return false;
+  return !isPanoramic(ar) && !isPortrait(ar);
+}