Please install it so that yarn and sfdx can be executed.
Also, please prepare to be able to create a scratch org by logging in with the following command to the organization that enabled Dev Hub.
sfdx force:auth:web:login -d -a DevHubThen, by executing the following command, a scratch organization is created and the Web browser opens automatically.
yarn sorg:initSince you can check the Feeds application from the application launcher, you can check the operation by accessing it.
Please install the package necessary for development with the following command.
yarnThen, use the following command to monitor the files under src/apps/feeds.
When editing and saving the file, the build will be done automatically.
yarn watch:feedsOnce the editing work is completed, the screen will be updated by executing the following command.
sfdx force:source:push

