init

node_modules/dayjs/esm/plugin/negativeYear/index.js

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+export default (function (_, c, dayjs) {
+  var proto = c.prototype;
+
+  var parseDate = function parseDate(cfg) {
+    var date = cfg.date,
+        utc = cfg.utc;
+
+    if (typeof date === 'string' && date.charAt(0) === '-') {
+      var normalData = date.slice(1);
+      var newDate = dayjs(normalData);
+
+      if (utc) {
+        newDate = dayjs.utc(normalData);
+      } else {
+        newDate = dayjs(normalData);
+      }
+
+      var fullYear = newDate.year();
+
+      if (date.indexOf("-" + fullYear) !== -1) {
+        return dayjs(newDate).subtract(fullYear * 2, 'year').toDate();
+      }
+
+      return date;
+    }
+
+    return date;
+  };
+
+  var oldParse = proto.parse;
+
+  proto.parse = function (cfg) {
+    cfg.date = parseDate.bind(this)(cfg);
+    oldParse.bind(this)(cfg);
+  };
+});