Number and date formats of a locale (plotly.js's format object, all keys resolved).
format
currency
string
$
date
%x
dateTime
%c
dayMonth
dayMonthYear
days
%A
decimal
layout.separators
grouping
number
[3]
month
months
%B
periods
%p
shortDays
%a
shortMonths
%b
thousands
time
%X
year