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JavaScript npm Basics (retiring) Installing Packages with npm Installing Local Packages

Shane Pagnatta
Shane Pagnatta
6,681 Points

Error: " module compiled against different Node.js version .... "

in File: app.js

const bcrypt = require('bcrypt');

const saltRounds = 10;

const myPlaintextPassword = 'password';

const someOtherPlaintextPassword = 'not_bacon';

bcrypt.genSalt(saltRounds, function(err, salt) {

bcrypt.hash(myPlaintextPassword, salt, function(err, hash) {




in Console:

treehouse:~/workspace$ node app.js
return process.dlopen(module, path._makeLong(filename));

Error: The module '/home/treehouse/workspace/node_modules/bcrypt/lib/binding/bcrypt_lib.node'
was compiled against a different Node.js version using
NODE_MODULE_VERSION 67. This version of Node.js requires
NODE_MODULE_VERSION 57. Please try re-compiling or re-installing
the module (for instance, using npm rebuild or npm install).
at Object.Module._extensions..node (module.js:682:18)
at Module.load (module.js:566:32)
at tryModuleLoad (module.js:506:12)
at Function.Module._load (module.js:498:3)
at Module.require (module.js:597:17)
at require (internal/module.js:11:18)
at Object.<anonymous> (/home/treehouse/workspace/node_modules/bcrypt/bcrypt.js:6:16)
at Module._compile (module.js:653:30)
at Object.Module._extensions..js (module.js:664:10)
at Module.load (module.js:566:32)

Troubleshooting completed:

npm install

npm rebuild

npm rebuild bcrypt --update-binary

npm rebuild node-pty --update-binary