验证枚举中包含JSON对象属性

Question

interface Notifications {
  type: NotificationType;
  frequency: FrequencyType;
}

enum NotificationType {
  SMS = 'SMS',
  EMAIL = 'EMAIL'
}

enum FrequencyType {
  INSTANT = 'INSTANT',
  DAILY = 'DAILY',
  WEEKLY = 'WEEKLY',
  NEVER = 'NEVER'
}

  if (body && body.frequency in FrequencyType && body.type in NotificationType) {
//do stuff
}

   var NotificationType;

(function(NotificationType2) {

  NotificationType2["SMS"] = "SMS";

  NotificationType2["EMAIL"] = "EMAIL";

})(NotificationType || (NotificationType = {}));

var FrequencyType;

(function(FrequencyType2) {

  FrequencyType2["INSTANT"] = "INSTANT";

  FrequencyType2["DAILY"] = "DAILY";

  FrequencyType2["WEEKLY"] = "WEEKLY";

  FrequencyType2["NEVER"] = "NEVER";

})(FrequencyType || (FrequencyType = {}));

Answer 1

TS码

enum NotificationType {
  SMS = 'SMS',
  EMAIL = 'EMAIL'
}

enum FrequencyType {
  INSTANT = 'INSTANT',
  DAILY = 'DAILY',
  WEEKLY = 'WEEKLY',
  NEVER = 'NEVER'
}

type BodyType =  {
    frequency: NotificationType;
    type: NotificationType
}

const validate = (body:BodyType):boolean => !!body && body.frequency in FrequencyType && body.type in NotificationType; 

编译完TS后，验证代码应该可以正常工作

validate({ frequency: 'INSTANT', type: 'SMS' }); // true
validate({}); // false
validate({ frequency: 'INSTANTS', type: 'SMS' }); // false

也许你需要或条件。

!!body && (body.frequency in FrequencyType || body.type in NotificationType)