打字稿枚举的构造函数？

我们的代码目前处于一种情况，我们在Java层中使用Enums，它使用如下构造函数存储id和’display value’：

public enum Status implements EnumIdentity { Active(1, "Active"), AwaitingReview(2, "Awaiting Review"), Closed(3, "Closed"), Complete(4, "Complete"), Draft(5, "Draft"), InProcess(6, "In Process"), InReview(7, "In Review"), NotStarted(8, "Not Started"), PendingResolution(9, "Pending Resolution"), Rejected(10, "Rejected"); private int id; private String displayValue; PlanStatus(final int id, String displayValue) { this.id = id; this.displayValue = displayValue; } /** {@inheritDoc} */ @Override public int id() { return id; } public String getDisplayValue() { return displayValue; } } 

并且我们希望在打字稿中匹配这一点以允许以有意义的方式显示状态以执行逻辑并在前端向用户显示值。 这可能吗？ 有没有更好的方法来处理这个？ 我们希望避免使用诸如status.id（）= 1或status.name（）=’Active’之类的逻辑来推动枚举。

谢谢

Answer 1

Typescript不支持扩展枚举，例如java。 您可以使用类来实现类似的效果：

 interface EnumIdentity { } class Status implements EnumIdentity { private static AllValues: { [name: string] : Status } = {}; static readonly Active = new Status(1, "Active"); static readonly AwaitingReview = new Status(2, "Awaiting Review"); static readonly Closed = new Status(3, "Closed"); static readonly Complete = new Status(4, "Complete"); static readonly Draft = new Status(5, "Draft"); static readonly InProcess = new Status(6, "In Process"); static readonly InReview = new Status(7, "In Review"); static readonly NotStarted = new Status(8, "Not Started"); static readonly PendingResolution = new Status(9, "Pending Resolution"); static readonly Rejected = new Status(10, "Rejected"); private constructor(public readonly id: number, public readonly displayValue: string) { Status.AllValues[displayValue] = this; } public static parseEnum(data: string) : Status{ return Status.AllValues[data]; } }