Installing TypeScript locally

You need NodeJS LTS.

💡 This track likely works with older stable versions, as well as the "current" version. However, by design, odd versions are never stable. Always make sure you install an even version of NodeJS.

Install Yarn 4+ using Node.JS corepack:

corepack enable yarn

Checking your installation

You generally need to open a new terminal in order to use binaries you've just installed.

$ node -v
v20.15.0

$ corepack -v
0.28.1

$ corepack yarn -v
v4.3.1

Note: your versions will likely differ from this.

Assignment installation

Each assignment needs some tools to run the tests:

They can be installed running this command within each assignment directory:

$ corepack yarn install

Depending on your editor, the Editor SDK needs to be installed in each assignment, in order to work with Plug'n'Play installs. At moment of writing the following are supported:

• CoC nvim
• Emacs
• Neovim Native LSP
• VSCode

For example, if using VSCode, the commands you run are:

$ corepack yarn install

➤ YN0000: · Yarn 4.3.1
➤ YN0000: ┌ Resolution step
➤ YN0000: └ Completed
➤ YN0000: ┌ Post-resolution validation
➤ YN0060: │ # [...]
➤ YN0000: └ Completed
➤ YN0000: ┌ Fetch step
➤ YN0000: └ Completed in 0s 566ms
➤ YN0000: ┌ Link step
➤ YN0000: │ ESM support for PnP uses the experimental loader API and is therefore experimental
➤ YN0000: └ Completed
➤ YN0000: · Done with warnings in 0s 768ms

$ corepack yarn dlx @yarnpkg/sdks vscode

➤ YN0000: · Yarn 4.3.1
➤ YN0000: ┌ Resolution step
➤ YN0085: │ + @yarnpkg/sdks@npm:3.1.3, and 103 more.
➤ YN0000: └ Completed in 0s 509ms
➤ YN0000: ┌ Fetch step
➤ YN0013: │ 104 packages were added to the project (+ 2.87 MiB).
➤ YN0000: └ Completed
➤ YN0000: ┌ Link step
➤ YN0000: └ Completed in 0s 270ms
➤ YN0000: · Done in 0s 881ms

➤ YN0000: Cleaning up the existing SDK files...
➤ YN0000: ┌ Generating SDKs inside .yarn/sdks
➤ YN0000: │ ✓ Eslint
➤ YN0000: │ ✓ Prettier
➤ YN0000: │ ✓ Typescript
➤ YN0000: │ • 5 SDKs were skipped based on your root dependencies
➤ YN0000: └ Completed
➤ YN0000: ┌ Generating settings
➤ YN0000: │ ✓ Vscode (updated 🔼)
➤ YN0000: └ Completed

You must run install inside the exercise directory before you are able to run the tests. Yarn 4 PnP is enabled, installing the dependencies in each exercise directory does NOT install a complete copy of all the dependencies.

If your editor is showing errors for eslint, prettier, or typescript afterwards, reload the window or reopen the editor.