使用toLocaleDateString在相同代码上的不同结果

Question

I am trying to set a date to my culture (fr-FR) using node and javascript. I found a good method on mozilla website:

var event = new Date();

var options = { weekday: 'long', year: 'numeric', month: 'long', day: 'numeric' };

console.log(event.toLocaleDateString('fr-FR', options));
// Result is  "samedi 8 juin 2019"

It is working on the website ( https://developer.mozilla.org/fr/docs/Web/JavaScript/Reference/Objets_globaux/Date/toLocaleDateString)but when i use this code in my node server, the result is totally different:

2019 M06 8, Sat

What am i missing please?

Answer 1

Nodejs by default only contains the en-US locale ( see here ), You can fix it by add full-icu-npm to dependency:

npm install --save full-icu

And then add flag to npm script:

For package.json:
{"scripts":{"start":"node --icu-data-dir=node_modules\\full-icu YOURAPP.js"}}