Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

npm@5 TypeError: Cannot read property 'version' of null

See original GitHub issue

Looks like using npm 5 we have a problem.

package_json.version at line 262 is undefined and throws at line 270

TypeError: Cannot read property 'version' of null
    at Object.module.exports.evaluate (/Users/yvele/repo/node_modules/fsevents/node_modules/node-pre-gyp/lib/util/versioning.js:270:32)
    at install (/Users/yvele/repo/node_modules/fsevents/node_modules/node-pre-gyp/lib/install.js:168:31)
    at Object.self.commands.(anonymous function) [as install] (/Users/yvele/repo/node_modules/fsevents/node_modules/node-pre-gyp/lib/node-pre-gyp.js:50:37)
    at run (/Users/yvele/repo/node_modules/fsevents/node_modules/node-pre-gyp/bin/node-pre-gyp:79:30)
    at Object.<anonymous> (/Users/yvele/repo/node_modules/fsevents/node_modules/node-pre-gyp/bin/node-pre-gyp:131:1)
    at Module._compile (module.js:556:32)
    at Object.Module._extensions..js (module.js:565:10)
    at Module.load (module.js:473:32)
    at tryModuleLoad (module.js:432:12)
    at Function.Module._load (module.js:424:3)

Main NPM issue:

https://github.com/npm/npm/issues/16926

Related issues:

Issue Analytics

State:
Created 6 years ago
Reactions:63
Comments:16 (2 by maintainers)

Top GitHub Comments

154reactions

floriantrabercommented, Jun 3, 2017

workaround: Remove the lock file.

rm .\package-lock.json

20reactions

alexjlockwoodcommented, Jun 14, 2017

I added package-lock=false to the .npmrc file in my repo’s root directory in order to temporarily workaround the issue. Seemed cleaner than adding it to the .gitignore. 😛