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utils.js
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utils.js
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export const warn = (...args) => {
if (console?.warn) {
if (isString(args[0])) args[0] = `react-i18next:: ${args[0]}`;
console.warn(...args);
}
};
const alreadyWarned = {};
export const warnOnce = (...args) => {
if (isString(args[0]) && alreadyWarned[args[0]]) return;
if (isString(args[0])) alreadyWarned[args[0]] = new Date();
warn(...args);
};
// not needed right now
//
// export const deprecated = (...args) => {
// if (process && process.env && (!process.env.NODE_ENV || process.env.NODE_ENV === 'development')) {
// if (isString(args[0])) args[0] = `deprecation warning -> ${args[0]}`;
// warnOnce(...args);
// }
// }
const loadedClb = (i18n, cb) => () => {
// delay ready if not yet initialized i18n instance
if (i18n.isInitialized) {
cb();
} else {
const initialized = () => {
// due to emitter removing issue in i18next we need to delay remove
setTimeout(() => {
i18n.off('initialized', initialized);
}, 0);
cb();
};
i18n.on('initialized', initialized);
}
};
export const loadNamespaces = (i18n, ns, cb) => {
i18n.loadNamespaces(ns, loadedClb(i18n, cb));
};
// should work with I18NEXT >= v22.5.0
export const loadLanguages = (i18n, lng, ns, cb) => {
// eslint-disable-next-line no-param-reassign
if (isString(ns)) ns = [ns];
ns.forEach((n) => {
if (i18n.options.ns.indexOf(n) < 0) i18n.options.ns.push(n);
});
i18n.loadLanguages(lng, loadedClb(i18n, cb));
};
export const hasLoadedNamespace = (ns, i18n, options = {}) => {
if (!i18n.languages || !i18n.languages.length) {
warnOnce('i18n.languages were undefined or empty', i18n.languages);
return true;
}
return i18n.hasLoadedNamespace(ns, {
lng: options.lng,
precheck: (i18nInstance, loadNotPending) => {
if (
options.bindI18n?.indexOf('languageChanging') > -1 &&
i18nInstance.services.backendConnector.backend &&
i18nInstance.isLanguageChangingTo &&
!loadNotPending(i18nInstance.isLanguageChangingTo, ns)
)
return false;
},
});
};
export const getDisplayName = (Component) =>
Component.displayName ||
Component.name ||
(isString(Component) && Component.length > 0 ? Component : 'Unknown');
export const isString = (obj) => typeof obj === 'string';
export const isObject = (obj) => typeof obj === 'object' && obj !== null;