chore: move constants file

app/assets/javascripts/constants.ts

@@ -0,0 +1,16 @@
+export const PANEL_NAME_NOTES = 'notes';
+export const PANEL_NAME_NAVIGATION = 'navigation';
+
+export const EMAIL_REGEX =
+  /^([a-zA-Z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-zA-Z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-zA-Z0-9](?:[a-zA-Z0-9-]*[a-zA-Z0-9])?\.)+[a-zA-Z0-9](?:[a-zA-Z0-9-]*[a-zA-Z0-9])?)$/;
+
+export const MENU_MARGIN_FROM_APP_BORDER = 5;
+export const MAX_MENU_SIZE_MULTIPLIER = 30;
+
+export const FOCUSABLE_BUT_NOT_TABBABLE = -1;
+export const NOTES_LIST_SCROLL_THRESHOLD = 200;
+
+export const MILLISECONDS_IN_A_DAY = 1000 * 60 * 60 * 24;
+export const DAYS_IN_A_WEEK = 7;
+export const DAYS_IN_A_YEAR = 365;
+export const BYTES_IN_ONE_MEGABYTE = 1000000;