date fomate

@@ -20,7 +20,7 @@ import ArticleItemIntro from './article-item-intro';
 import ArticleItemComment from './article-item-comment';
 import ArticleResource from './article-resource-item';
 import YAS from 'utils/yas-constants';
-import dayjs from 'dayjs';
+import dayjs from 'utils/day';
 
 import {createNamespacedHelpers} from 'vuex';
 const {mapState} = createNamespacedHelpers('article');

+import {isNull, isUndefined} from 'lodash';
+
+class Day {
+  constructor(date) {
+    if (isNull(date) || isUndefined(date)) {
+      this._date = new Date();
+    } else {
+      this._date = new Date(date);
+    }
+
+    this._init();
+  }
+  _init() {
+    const { _date } = this;
+
+    this._date_y = _date.getFullYear();
+    this._date_M = _date.getMonth() + 1;
+    this._date_D = _date.getDate();
+    this._date_W = _date.getDay();
+    this._date_H = _date.getHours();
+    this._date_m = _date.getMinutes();
+    this._date_s = _date.getSeconds();
+    this._date_ms = _date.getMilliseconds();
+  }
+  _get(type) {
+    return this[`_date_${type}`];
+  }
+  _fix(num, length) {
+    num = num + '';
+
+    return num.length < length ? ((new Array(length + 1)).join('0') + num).slice(-length) : num;
+  }
+  year() {
+    return this._get('y');
+  }
+  month() {
+    return this._get('M');
+  }
+  day() {
+    return this._get('W');
+  }
+  date() {
+    return this._get('D');
+  }
+  hour() {
+    return this._get('H');
+  }
+  minute() {
+    return this._get('m');
+  }
+  second() {
+    return this._get('s');
+  }
+  millisecond() {
+    return this._get('ms');
+  }
+  fromNow() {
+    const date = this._date.getTime();
+    const today = new Date(new Date().toLocaleDateString()).getTime();
+    const days = Math.floor((today - date) / (24 * 60 * 60 * 1000)) + 1;
+
+    if (days > 5) {
+      return `${this.year()}-${this._fix(this.month(), 2)}-${this._fix(this.day(), 2)}`;
+    } else if (days > 2) {
+      return '2天前';
+    } else if (days > 1) {
+      return '前天';
+    } else if (days > 0) {
+      return '昨天';
+    } else {
+      return `${this.hour()}:${this.minute()}`;
+    }
+  }
+}
+
+function day(date) {
+  return new Day(date);
+}
+
+
+export default day;