$ node -v v10.15.2 $ yarnpkg -v 1.13.0 $ cd /tmp $ mkdir foo $ cd foo $ yarnpkg init yarn init v1.13.0 question name (foo): question version (1.0.0): question description: question entry point (index.js): question repository url: question author: question license (MIT): question private: success Saved package.json Done in 17.20s. $ yarnpkg add leftpad yarn add v1.13.0 info No lockfile found. [1/4] Resolving packages... warning leftpad@0.0.1: Use the built-in String.padStart function instead [2/4] Fetching packages... [3/4] Linking dependencies... [4/4] Building fresh packages...
success Saved lockfile. success Saved 1 new dependency. info Direct dependencies └─ leftpad@0.0.1 info All dependencies └─ leftpad@0.0.1 Done in 1.53s. Paolo
