pnpm installation method
To install using pnpm, you first need to make sure Node.js is installed. Then, follow the steps below to install pnpm:
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Open a terminal or command prompt.
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Enter the following command at the command line to install pnpm globally:
npm install -g pnpm
This will install the pnpm package globally to your computer using npm.
- After the installation is complete, you can use the following command to verify that pnpm is installed successfully:
pnpm --version
If you see the version number of pnpm output, the installation was successful.
You have now successfully installed pnpm and can use it to manage your project's dependencies.
The connection and difference between pnpm and npm, yarn
pnpm, npm, and yarn are all common JavaScript package management tools, and they have some connections and differences in functions and usage methods.
connect:
- pnpm, npm, and yarn can all be used to install, manage, and distribute JavaScript packages.
- They all rely on a Node.js environment and use a command-line interface to operate.
package.jsonpnpm, npm, and yarn all support defining information such as dependencies and scripts of a project through configuration files (for example ).- They can both get dependencies from official package repositories such as npm registries or other custom registries.
the difference:
- Installation and caching mechanism : Both npm and yarn download dependencies to the local
node_modulesdirectory of the project, and will cache them globally to improve the speed of subsequent installations. However, pnpm uses a mechanism similar to "hard linking" to link dependencies directly into the project to save disk space. - Parallel installs : Unlike npm and yarn, pnpm can install dependencies in parallel, providing faster installs in some cases.
- Versioning : Dependency versions are handled slightly differently. npm and pnpm usually use Semantic Versioning-compliant version numbers to manage dependencies. Yarn, on the other hand, introduces a "lock file" mechanism, using
yarn.lockfiles to ensure the consistency of dependency versions. - Command line interface : Although both of them can be used in the command line, pnpm and yarn may provide more functions and improvements on the user interface, such as more friendly output, interactive prompts, etc.
Which package management tool you choose to use depends on your specific needs and personal preferences. If you are concerned about faster installation speed and small disk space footprint, you can try pnpm. If you are used to npm or don't want to switch if your project already depends on npm's ecosystem, you can continue to use npm. In addition, yarn is also a popular choice, which takes into account the characteristics of some of the aforementioned tools and has some improvements in performance and ease of use.
Whether the three can be switched at will
pnpm, npm, and yarn can be used interchangeably in a project. Although they differ in some specific functions and mechanisms, they can all manage your JavaScript package dependencies.
If you already use a tool (such as npm or yarn) to manage your project, and the project works well and meets your needs, you don't need to switch to another tool. Differences between these package management tools do not result in project incompatibilities.
However, if you consider switching to another tool, such as switching from npm to yarn or pnpm, you need to ensure that the following aspects are properly handled during the switch:
- Migrate project dependencies: Migrate legacy
package.jsonfiles and their dependencies to the new tool. - Ensure compatibility of build scripts and action instructions: If your project uses commands or scripts specific to a certain package manager, you will need to adjust accordingly when switching.
All in all, although these package management tools have their own features and advantages, they are interchangeable in most cases. Choosing the right tool should be based on your specific needs, your team's preferences, and the unique circumstances of your project.