如何查看给定的Node.js版本支持哪些语言环境，以及如何启用缺少的语言环境? [英] How to see what locales a given Node.js version supports and how to enable missing locales?

问题描述

我在Windows 8.1上的Node.js版本是:

My Node.js version on Windows 8.1 is:

$ node -v
v5.3.0

但是似乎它不支持语言环境识别和协商.我指的是 ECMAScript国际化API 的支持.仅支持en语言环境.这是浏览器和Node.js中的示例.在浏览器中，可以确定一个区域设置就可以了:

But it seems it doesn't support locale identification and negotiation. I mean the support of ECMAScript Internationalization API. Only en locale is supported. Here is an example in a browser and in Node.js. In a browser a locale is identified just fine:

// en
> Intl.NumberFormat('en', {currency: 'USD', style:"currency"}).format(300)
> "$300.00"

// ru
> Intl.NumberFormat('ru', {currency: 'USD', style:"currency"}).format(300)
> "300,00 $"

但是在Node.js中，它不起作用. Node.js为en和ru返回相同的en格式:

But in Node.js it doesn't work. Node.js returns the same en format for both en and ru:

// en
> Intl.NumberFormat('en', {currency: 'USD', style:"currency"}).format(300)
'$300.00'

// ru
> Intl.NumberFormat('ru', {currency: 'USD', style:"currency"}).format(300)
'$300.00'

是否可以查看给定的Node.js支持哪些语言环境，以及如何启用所需的语言环境?

Is there a way to see what locales does a given Node.js support and how can I enable desired locales?

推荐答案

根据 https://github.com/andyearnshaw/Intl.js/是一个nodejs模块，称为

According to https://github.com/andyearnshaw/Intl.js/ there is a nodejs module, called

intl-locales-supported

intl-locales-supported

显示是否支持语言环境.

which shows if a locale is supported.

var areIntlLocalesSupported = require('intl-locales-supported');

var localesMyAppSupports = [
    /* list locales here */
];

if (global.Intl) {
    // Determine if the built-in `Intl` has the locale data we need.
    if (!areIntlLocalesSupported(localesMyAppSupports)) {
        // `Intl` exists, but it doesn't have the data we need, so load the
        // polyfill and patch the constructors we need with the polyfill's.
        var IntlPolyfill    = require('intl');
        Intl.NumberFormat   = IntlPolyfill.NumberFormat;
        Intl.DateTimeFormat = IntlPolyfill.DateTimeFormat;
    }
} else {
    // No `Intl`, so use and load the polyfill.
    global.Intl = require('intl');
}

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