useFixedJoint

<script>
  import { useFixedJoint, RigidBody, Collider } from '@threlte/rapier'

  const { joint, rigidBodyA, rigidBodyB } = useFixedJoint({ x: 1 }, {}, { x: -1 }, {})
</script>

<RigidBody bind:rigidBody={$rigidBodyA}>
  <Collider
    shape="cuboid"
    args={[1, 1, 1]}
  />
</RigidBody>

<RigidBody bind:rigidBody={$rigidBodyB}>
  <Collider
    shape="cuboid"
    args={[1, 1, 1]}
  />
</RigidBody>

const {
	joint: Writable<FixedImpulseJoint>
	rigidBodyA: Writable<RAPIER.RigidBody>
	rigidBodyB: Writable<RAPIER.RigidBody>
} = useFixedJoint(
	anchorA,  // Position
  frameA,   // Rotation
  anchorB,  // Position
  frameB    // Rotation
)