Class constructor FileManager cannot be invoked without 'new'

bug: today rely on packaged items reinstall when an error occurs:
Class constructor FileManager CAN not BE the Invoked the without 'new new'

Solution: try a variety of solutions, locking effective solutions
1. Modify package.json inside: "less": "^ 3.9.0 " to "less": "~ 3.9.0"

2. Delete node_modules, and then re-install package, packaging success

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Origin www.cnblogs.com/plBlog/p/11427922.html