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T3009: Behavior requirement not met ​

Cause ​

A behavior needs the contract to declare certain states or events (the press behavior needs a press event), and they are missing.

Example ​

xml
<contract>
{ "name": "Card", "role": "button", "parts": ["root"], "behavior": "press" }
</contract>
<template><div class="root"></div></template>

What you see ​

text
ERROR  T3009  app/components/Card.tess:2:68
  Behavior "press" requires the event "press", which is not in events.
  Add "press" to events.
  Run `tessera explain T3009` for details.

Fix ​

Add what the message names to the contract.

All errors and warnings