index.js
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// https://github.com/ElemeFE/element/blob/dev/src/locale/index.js
import defaultLang from './lang/zh-CN';
import Vue from 'vue';
import deepmerge from 'deepmerge';
import Format from './format';
const format = Format(Vue);
let lang = defaultLang;
let merged = false;
let i18nHandler = function() {
const vuei18n = Object.getPrototypeOf(this || Vue).$t;
if (typeof vuei18n === 'function') {
if (!merged) {
merged = true;
Vue.locale(
Vue.config.lang,
deepmerge(lang, Vue.locale(Vue.config.lang) || {}, { clone: true })
);
}
return vuei18n.apply(this, arguments);
}
};
export const t = function(path, options) {
let value = i18nHandler.apply(this, arguments);
if (value !== null && value !== undefined) return value;
const array = path.split('.');
let current = lang;
for (let i = 0, j = array.length; i < j; i++) {
const property = array[i];
value = current[property];
if (i === j - 1) return format(value, options);
if (!value) return '';
current = value;
}
return '';
};
export const use = function(l) {
lang = l || lang;
};
export const i18n = function(fn) {
i18nHandler = fn || i18nHandler;
};
export default { use, t, i18n };