/
i18n.js
61 lines (50 loc) · 1.72 KB
/
i18n.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
const i18n = require('i18next');
const XHR = require('i18next-xhr-backend');
const LanguageDetector = require('i18next-browser-languagedetector');
const options = {
fallbackLng: 'en',
load: 'languageOnly', // we only provide en, de -> no region specific locals like en-US, de-DE
// have a common namespace used around the full app
ns: ['common'],
defaultNS: 'common',
// debug: true,
saveMissing: true,
interpolation: {
escapeValue: false, // not needed for react!!
formatSeparator: ',',
format: (value, format, lng) => {
if (format === 'uppercase') return value.toUpperCase();
return value;
},
},
};
// for browser use xhr backend to load translations and browser lng detector
if (process.browser) {
i18n
.use(XHR)
// .use(Cache)
.use(LanguageDetector);
}
// initialize if not already initialized
if (!i18n.isInitialized) i18n.init(options);
// a simple helper to getInitialProps passed on loaded i18n data
i18n.getInitialProps = (req, namespaces) => {
if (!namespaces) namespaces = i18n.options.defaultNS;
if (typeof namespaces === 'string') namespaces = [namespaces];
req.i18n.toJSON = () => null; // do not serialize i18next instance and send to client
const initialI18nStore = {};
req.i18n.languages.forEach(l => {
initialI18nStore[l] = {};
namespaces.forEach(ns => {
initialI18nStore[l][ns] = req.i18n.services.resourceStore.data[l]
? req.i18n.services.resourceStore.data[l][ns] || {}
: {};
});
});
return {
i18n: req.i18n, // use the instance on req - fixed language on request (avoid issues in race conditions with lngs of different users)
initialI18nStore,
initialLanguage: req.i18n.language,
};
};
module.exports = i18n;