src/types/connectorText.ts

export type ConnectorTextBlock = {
  type: 'connector_text'
  connector_text: string
}

export function isConnectorTextBlock(value: unknown): value is ConnectorTextBlock {
  return (
    !!value &&
    typeof value === 'object' &&
    (value as { type?: unknown }).type === 'connector_text' &&
    typeof (value as { connector_text?: unknown }).connector_text === 'string'
  )
}