$ git commit -am 'untracked node_modules'Ĭheck for differences between development and production If there are results, then instruct git to stop tracking node_modules: $ echo 'node_modules' >. Check with the following: $ git ls-files | grep node_modules Therefore, node_modules (and other generated directories like bower_components) shouldn’t be included in source control. The app’s node_modules directory is generated at build time from the dependencies listed in package.json and the lockfile. To update the yarn.lock file, run yarn install and check the changes into git. In order to update the package-lock.json, run npm install and check in the changes to the file to git.

It’s recommended to use a lockfile when third-party dependencies are referenced in the package.json npm package-lock.json or yarn.lock) checked into the app’s repository, make sure that the lockfile is both up to date and that the changes are checked into git. If they don’t, specify the matching versions in the package.json. The binaries should match up with the same local versions. Remote: Using default npm version: 6.14.4 Remote: Downloading and installing node 12.16.3. node, npm) are used for each deploy in the build logs: remote: -> Installing binaries Then, compare the results with the package.json engines section. (Being a few patch versions off is okay.) First, check local versions: $ node -version The production environment should mirror the app’s development environment as closely as possible. To use the official buildpack, run: $ heroku buildpacks:set heroku/nodejs Is the app using the officially supported and maintained buildpack? Most of the time, the standard buildpack is the best choice - either alone, or paired with other buildpacks (such as the Heroku Ruby Buildpack).

Your Node.js deploy failed - now what? Start with these simple steps to troubleshoot a build issue. Check for differences between development and production.

Npm config set loglevel