But it is your program's responsibility to handle the lack of the dependency. Install the tool npm install -g npm-check-updates Verify that your package.json is checked in to version control (the next command will overwrite the package.json) Update the package.json ncu -upgrade Validate the changes to your package. The difference between devDependencies and dependencies is that the former contains development tools, like a testing library, while the latter is bundled with the app in production.Īs for the optionalDependencies the difference is that build failure of the dependency will not cause installation to fail. Shorthands of the flags can also be used: -no-optional will prevent optional dependencies from being installed.-save-optional installs and adds the entry to the package.json file optionalDependencies.-no-save installs but does not add the entry to the package.json file dependencies.-save-dev installs and adds the entry to the package.json file devDependencies.Often you'll see more flags added to this command:
Before version 5, you needed to add the flag -save. Furthermore, since npm 5, this command adds to the package.json file dependencies. To update a specific package, we need to run the npm update command followed by the package name.
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