status-im/status-go

package protocol

import (
    "github.com/pkg/errors"
)

var (
    ErrChatIDEmpty      = errors.New("chat ID is empty")
    ErrChatNotFound     = errors.New("can't find chat")
    ErrNotImplemented   = errors.New("not implemented")
    ErrContactNotFound  = errors.New("contact not found")
    ErrCommunityIDEmpty = errors.New("community ID is empty")
    ErrUserNotMember    = errors.New("user not a member")
)