IDBObjectStore 接口上的 Typescript 1.8 lib.d.ts 缺少自动增量属性？

Question

如果我查看以下页面的规范，显然在 IDBObjectStore 上有一个指定的属性（只读）名为 "autoIncrement":

https://developer.mozilla.org/en-US/docs/Web/API/IDBObjectStore

https://developer.mozilla.org/en-US/docs/Web/API/IDBObjectStore/autoIncrement

但是，当尝试从 Visual Studio 2015 内部读取属性，或尝试使用 Typescript 编译器进行编译时，此属性被标记为错误：

// Excerpted from the code I am writing to manage our IndexedDB Schemas.
interface ISchemaForIndex {
    keyPath: string;
    name: string;
    unique: boolean;
    multiEntry: boolean;
}

interface ISchemaForObjectStore {
    clearStoreOnUpgradeBeforeVersion: number;
    name: string;
    keyPath: string;
    autoIncrement: boolean;
    indexes: ISchemaForIndex[];
}

function getOrCreateOrReCreateStore(upgradeDb: IDBDatabase, transaction: IDBTransaction, oldVersion: number, schemaObjectStore: ISchemaForObjectStore) {

    if (_.contains(upgradeDb.objectStoreNames, schemaObjectStore.name)) {
        if (oldVersion >= schemaObjectStore.clearStoreOnUpgradeBeforeVersion) {
            const objectStore = transaction.objectStore(schemaObjectStore.name);
            if (objectStore.keyPath === schemaObjectStore.keyPath &&

                // NEXT LINE HAS ERROR ON ATTEMPT TO READ autoIncrement PROPERTY FROM objectStore
                objectStore.autoIncrement === schemaObjectStore.autoIncrement) {

                return objectStore;
            }
        }
        upgradeDb.deleteObjectStore(schemaObjectStore.name);
    }
    return upgradeDb.createObjectStore(schemaObjectStore.name,
    { keyPath: schemaObjectStore.keyPath, autoIncrement: schemaObjectStore.autoIncrement });
}

看来有问题的接口是在 lib.d.ts 中定义的，在我的系统中的文件夹 C:\Program Files (x86)\Microsoft SDKs\TypeScript.8 .

该文件似乎只是缺少有问题的属性。这是该文件中的接口定义：

// Excerpt from C:\Program Files (x86)\Microsoft SDKs\TypeScript.8\lib.d.ts
interface IDBObjectStore {
    indexNames: DOMStringList;
    keyPath: string;
    name: string;
    transaction: IDBTransaction;
    add(value: any, key?: any): IDBRequest;
    clear(): IDBRequest;
    count(key?: any): IDBRequest;
    createIndex(name: string, keyPath: string | string[], optionalParameters?: IDBIndexParameters): IDBIndex;
    delete(key: any): IDBRequest;
    deleteIndex(indexName: string): void;
    get(key: any): IDBRequest;
    index(name: string): IDBIndex;
    openCursor(range?: any, direction?: string): IDBRequest;
    put(value: any, key?: any): IDBRequest;
}

找不到属性 autoIncrement。

有趣的是，在同一个文件中，属性确实存在于 IDBObjectStoreParameters 接口上（可选）。

关于此问题的任何见解以及健康的解决方法可能是什么？我有点莫名其妙。

提前致谢。

Answer 1

也许您需要升级您的定义。可以看到 autoIncrement 属性定义在 the Typescript repo. If you look at the commit history, it was added on 2016-02-23.

Answer 2

您可以像@miqid 建议的那样在运行时扩展接口。我通常在 src 文件夹中放一个 lib.d.ts，像这样：

declare module IDBObjectStore {
    const autoIncrement: any;
}

我用它来扩展 CodeMirror typedef，因为属性我的 def 丢失了。不确定您的 d.ts 是否以与我相同的方式定义，但是 Google（和 SO）上有很多关于扩展打字稿接口的内容。

IDBObjectStore 接口上的 Typescript 1.8 lib.d.ts 缺少自动增量属性？

Typescript 1.8 lib.d.ts missing autoIncrement property on IDBObjectStore Interface?

indexeddb

typescript

IDBObjectStore 接口上的 Typescript 1.8 lib.d.ts 缺少自动增量 属性？

Typescript 1.8 lib.d.ts missing autoIncrement property on IDBObjectStore Interface?

indexeddb

typescript

IDBObjectStore 接口上的 Typescript 1.8 lib.d.ts 缺少自动增量属性？