更新前端静态网页获取方式，放弃使用后端获取api

frontend/node_modules/core-js/actual/date/get-year.js

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+'use strict';
+var parent = require('../../stable/date/get-year');
+
+module.exports = parent;

frontend/node_modules/core-js/actual/date/index.js

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+'use strict';
+var parent = require('../../stable/date');
+
+module.exports = parent;

frontend/node_modules/core-js/actual/date/now.js

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+'use strict';
+var parent = require('../../stable/date/now');
+
+module.exports = parent;

frontend/node_modules/core-js/actual/date/set-year.js

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+'use strict';
+var parent = require('../../stable/date/set-year');
+
+module.exports = parent;

frontend/node_modules/core-js/actual/date/to-gmt-string.js

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+'use strict';
+var parent = require('../../stable/date/to-gmt-string');
+
+module.exports = parent;

frontend/node_modules/core-js/actual/date/to-iso-string.js

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+'use strict';
+var parent = require('../../stable/date/to-iso-string');
+
+module.exports = parent;

frontend/node_modules/core-js/actual/date/to-json.js

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+'use strict';
+var parent = require('../../stable/date/to-json');
+
+module.exports = parent;

frontend/node_modules/core-js/actual/date/to-primitive.js

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+'use strict';
+var parent = require('../../stable/date/to-primitive');
+
+module.exports = parent;

frontend/node_modules/core-js/actual/date/to-string.js

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+'use strict';
+var parent = require('../../stable/date/to-string');
+
+module.exports = parent;