How to get to NPM Link is still relatively easy, this process can refer to the online tutorial. B is an NPM link, and the ipmort in b is intended to reference node_module A, so it is possible to use –preserve-symlinks. Node-preserve-symlinks startup.js startup.js is the command to start the service, so that b references to a project library
serendipity
Link node_module package, I directly modify, source package is also modified, this is not expected, it is convenient