The first two are for TypeScript development and the rest are extensions that improves the DX (Developer Experience).
Make TypeScript errors prettier and human-readable in VSCode.
https://marketplace.visualstudio.com/items?itemName=yoavbls.pretty-ts-errors
A tiny extension for VS Code that lets you use // ^? inside your editor to inline highlight types. Re-uses the existing TypeScript tooling infra in *.ts, *.tsx, *.js, and *.jsx files, simply adding inline info.
Useful for keyboard warriors or folks working on complex types and want to see how changes propagate throughout other types.
https://marketplace.visualstudio.com/items?itemName=Orta.vscode-twoslash-queries
ErrorLens turbo-charges language diagnostic features by making diagnostics stand out more prominently, highlighting the entire line wherever a diagnostic is generated by the language and also prints the message inline.
https://marketplace.visualstudio.com/items?itemName=usernamehw.errorlens
Ability to duplicate files and directories in VS Code.
https://marketplace.visualstudio.com/items?itemName=mrmlnc.vscode-duplicate
Integrates ESLint into VS Code.
https://marketplace.visualstudio.com/items?itemName=dbaeumer.vscode-eslint