<ul><li>Dependencies in package.json file include the essential packages needed for the project to run in production.</li><li>DevDependencies are necessary only during development and are not included in the production build.</li><li>PeerDependencies are not installed automatically but are expected to exist in the user's environment where the package is used.</li><li>OptionalDependencies enhance functionality but are not mandatory for the installation process.</li></ul>

Types of dependencies in package.json file

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