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Yarn_Commands_For_Reference.md

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Yarn commands for reference

Install or Upgrade

npm install -g yarn - To either install yarn globally or upgrade to the later version

Handling Global Packages

yarn global is the prefix to handle global packages

yarn global add <package> - Install

yarn global list - List all global packages installed

yarn global upgrade <package> - Update the package

yarn global remove <pakage> - Uninstall

yarn global bin - Location where the global packages are installed and set in system path

Handling Local Packages

yarn install - Install dependencies listed in package.json

yarn add <package> - Install

yarn upgrade --latest - Upgrade all dependencies to their latest versions. This will only upgrade dependencies but not package.json

yarn upgrade-interactive --latest - Upgrades all dependencies to their latest versions by confirming with the user for each dependency. This will onlu upgrade dependencies but not package.json

yarn upgrage <package> <package@version> - Upgrade one or more packages with or without version

yarn remove <package> - Uninstall package

yarn list - List all packages with their versions installed locally with their dependencies as well

yarn list --depth=0|1|2 - List all packages with the specified depth of dependencies

yarn list --pattern <package|package> - list packages with the specified pattern

Quick References

yarn add <git remote url>#<branch/commit/tag> - installs a package from a remote git repository at specific git branch, git commit or git tag

yarn create <starter-kit-package> - Creates new projects from any create-* starter kits. This is alternative to adding the package globally and invoking the package command.

yarn global add create-react-app
create-react-app my-app

Fixing Common Issues

Fix Error: watch ENOSPC on Ubuntu when running yarn dev

I had this problem when running yarn dev or npm start no a Ubuntu 18.04

This link helped me on this, The error happens because there's a limit of files that can be watched by default on Ubuntu. And we need to increase this number of files in the /etc/sysctl.conf config file, adding this line at the end fs.inotify.max_user_watches=582222

The command to add the config bellow is

echo fs.inotify.max_user_watches=582222 | sudo tee -a /etc/sysctl.conf && sudo sysctl -p

Fix libpng12.so.0: cannot open shared object file: No such file or directory on Ubuntu

Run the below command to fix issue on not finding libpng12.so

echo "deb http://mirrors.kernel.org/ubuntu/ xenial main" | sudo tee -a /etc/apt/sources.list && sudo apt-get update && sudo apt install -y --allow-unauthenticated libpng12-0