问题
Currently, If I run npm install, it installs the updated version of already installed packages. How can I install the exact version as specified in the package.json file?
回答1:
That behavior is really driven by the one specifying the versions in the package.json. If the version number looks like "1.0.0", without any other symbols, the exact version (1.0.0) should be installed.
So what you could do is simply modify the package.json and run a npm install then. Be sure to clear out the node_modules directory before you do that.
https://docs.npmjs.com/files/package.json#dependencies
回答2:
By default npm installs packages using ^ which means any version in the same major range, you can switch this behaviour by using --save-exact
// npm
npm install --save --save-exact react
// yarn
yarn add --exact react
I created a blog post about this if anyone is looking for this in the future.
https://www.dalejefferson.com/articles/2018-02-04-how-to-save-exact-npm-package-versions/
回答3:
You can also open package.json and change value for the package you want to remain exact. From "vue": "^2.6.10" to "vue": "2.6.10". Notice the lack of ^ sign in front of the version number.
来源：https://stackoverflow.com/questions/41003470/npm-install-the-exact-package-version-specified-in-package-json