Format lists and durations with locale data

How to do it

"A, B and C" becomes "A, B y C" in Spanish and "A、B、C" in Japanese. Durations such as "1 hr, 5 min" change words and order too. Use Intl.ListFormat and Intl.DurationFormat in JavaScript, or Babel's format_list and format_timedelta in Python. Keep the formatted list inside one message, as Translate whole sentences says.

Examples

JavaScript example

new Intl.ListFormat('es', { type: 'conjunction' }).format(['A', 'B', 'C']); // 'A, B y C'
new Intl.DurationFormat('sv', { style: 'short' }).format({ hours: 1, minutes: 5 });

Python example

from datetime import timedelta
from babel.dates import format_timedelta
from babel.lists import format_list

format_list(["A", "B", "C"], locale="es")  # 'A, B y C'
format_timedelta(timedelta(minutes=65), locale="sv")

How to check

A unit test formats ["A", "B", "C"] in en, es and ja and gets A, B, and C, A, B y C and A、B、C. A search finds no join(', ') on visible text.

Sources

• ECMA-402 (Intl.ListFormat and Intl.DurationFormat)

Related rules

• LOC-13 Translate whole sentences in Localization