node_modules分辨率详细信息

Question

With the following lookup algorithm in mind: https://nodejs.org/api/modules.html#modules_loading_from_node_modules_folders

Say we have this in package.json:

"dependencies":{
  "foo":"latest",
  "bar":"latest",
  "baz":"latest"
}

given the above algorithm (read the link), I believe it is absolutely true, that in our project'ss primary node_modules folder, we must have at least 3 folders:

node_modules/
    foo/
    bar/
    baz/

what confused me though, is that I swear I have seen case where foo/bar/baz was missing, and the modules still resolved with require. Although maybe I was imagining things.

Answer 1

如果更新了packages.json文件，则大部分时间将必须运行npm install