The manifest.ts file of your next generation Slack app is undisputedly the most important file in your app’s root directory. This video will walk through the importance of the manifest.ts file, the type of content you can expect to find in this file and some key Slack CLI commands.

App manifest documentation: https://api.slack.com/future/manifest
Github repo for Hello World: https://github.com/slack-samples/deno-hello-world

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