Microsoft Graph api helps to connect various platform within Microsoft 365. One of the platform is Microsoft Teams. Microsoft Teams API helps developer to get Channel and Chat information from Particular Teams. It helps to integrate with various existing application. SPFx latest framework has native support to Microsoft Graph API. Authentication to execute api is much easier. Please watch below video for step by step guide on how to integrate Teams API within SPFx

The full source code is here on github https://github.com/msisgreat/spfx/tree/master/msgraph-teams

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