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import { Machine } from '../src/index';
describe('strict mode', () => {  const pedestrianStates = {    initial: 'walk',    states: {      walk: {        on: {          PED_COUNTDOWN: 'wait'        },        onEntry: 'enter_walk',        onExit: 'exit_walk'      },      wait: {        on: {          PED_COUNTDOWN: 'stop'        },        onEntry: 'enter_wait',        onExit: 'exit_wait'      },      stop: {        type: 'final' as const,        onEntry: 'enter_stop',        onExit: 'exit_stop'      }    }  };
  const lightMachine = Machine({    strict: true,    key: 'light',    initial: 'green',    states: {      green: {        on: {          TIMER: 'yellow',          POWER_OUTAGE: 'red',          NOTHING: 'green'        },        onEntry: 'enter_green',        onExit: 'exit_green'      },      yellow: {        on: {          TIMER: 'red',          POWER_OUTAGE: 'red'        },        onEntry: 'enter_yellow',        onExit: 'exit_yellow'      },      red: {        on: {          TIMER: 'green',          POWER_OUTAGE: 'red',          NOTHING: 'red'        },        onEntry: 'enter_red',        onExit: 'exit_red',        ...pedestrianStates      }    }  });
  it('should throw for unacceptable events', () => {    expect(() => {      lightMachine.transition('green', 'FOO');    }).toThrow();  });
  it('should not throw for built-in events', () => {    expect(() => {      lightMachine.transition('red.wait', 'PED_COUNTDOWN');    }).not.toThrow();  });});