This package doesn't use default dependencies, to test Trust specific features you need to clone WalletConnect Trust fork and link the packaged globally:
Go to the path you cloned WalletConnect Trust fork and type:
cd packages/core && npm install && npm run build && npm link && cd -cd packages/browser && npm install && npm link @walletconnect/core && npm run build && npm link && cd -Go to the directory where you clonned the example app, install the dependencies and type:
npm link @walletconnect/core && npm link @walletconnect/coreyarn startyarn testyarn build