从现有的 Node_Modules 文件夹构建 Package.Json？

Question

I have a node_modules folder that works, and I have tried many permutations of package.json's that should create identical results and create extremely close results, but my project will not build. I have no idea how to remedy this problem.

I have matched versions using npm list and manually adding to my package.json , I have used winMerge to try to find differences.

My existing node_modules folder works, but if I rebuild it, it fails miserably. I am at wit's end.

Edit Node: 6.9.5 and NPM 4.2.0

Answer 1

You could try to use shrinkwrap to nail down the dependencies from your existing node_modules folder.

See https://docs.npmjs.com/cli/shrinkwrap

It should create a npm-shrinkwrap with all versions nailed to the ones currently used in the node_modules folder with npm shrinkwrap .

On the second system or in the second folder put the npm-shrinkwrap.json besides the package.json and try a npm install . In the optimal case it will recreate your modules exactly as in the existing location.

If that does not help - can you post some more detailed error outputs?

Answer 2

You can create the package.json file in your chosen location by running:

npm init

• You can answer the questions being asked when npm init is running or you can press enter until all the question are finished and update the questions at another time in the created package.json.
• After the package.json file is created, create a script as suggested here .

After creating the script run

node script.js

• Copy the dependencies listed in the terminal into the "dependencies": {} section of the package.json file you just created.
• Done.

Answer 3

You can run npm init in the same folder where node_modules is which will create a package.json followed by command prompts.