NPM under scripts performs multiple commands under Mac vs Windows differences

Window under the wording:

Mac:

Using && to connect multiple commands under Mac does not bring the previously assigned projectname back to the semantic context of the current execution environment, and if you remove &&, the Webpack and Webpack commands will not be executed. So there is a problem, the use of && before the variable can not be obtained, do not use && after the command can not be executed, after consulting colleagues (Linux experts), changed to not use && also not with a space, but using a semicolon;

NPM under scripts performs multiple commands under Mac vs Windows differences