在 typescript 函数项目中添加 @google-cloud/logging 会出错

Question

编辑： 对于有同样问题的其他人 - 在课堂主体中使用 const Logging: any = require('@google-cloud/logging') 和 var logger = Logging() 就像一个魅力！

记得使用var logger = Logging() 来实例化记录器库。否则你仍然会得到 logger.log is not a function！

原帖

我有一个 firebase 函数项目，用 typescript 编写 - 使用 webpack 编译。我目前正在尝试实现 @google-cloud/logging 库，但我遇到了问题。它出来说

找不到模块“google-cloud/logging”的声明文件。尝试npm install @types/@google-cloud/logging（如果存在）或添加包含declare module '@google-cloud/logging'; 的新声明（.d.ts）文件

我尝试通过以下方式添加库：

import * as Logging from '@google-cloud/logging';
import * as logging from '@google-cloud/logging';
import { Logging } from '@google-cloud/logging';

但我仍然收到此错误。尝试运行使用“日志记录”的函数会导致

logging.log 不是函数

我什至尝试过需要库的javascript方式，但仍然没有成功。

我的 tsconfig.json：

{
    "compilerOptions": {
        "target": "es6",
        "module": "commonjs",
        "outDir": "./",
        "noImplicitAny": true
    },
    "include": [
        "src/**/*.ts"
    ],
    "exclude": [
        "node_modules"
    ]
}

我读到有些人通过手动将“d.ts”文件添加到项目中取得了成功，尽管我不太了解它。这是堆栈溢出文章的链接-Importing non-typescript module in typescript

如何在打字稿项目中添加库？

如果需要，我可以提供更多详细信息。这是我能想到的。

Answer 1

@google-cloud/logging 还没有类型定义。所以你需要提供一些！ 同时，你可以这样做

const Logging: any = require('@google-cloud/logging')

如果您安装了@types/node 并以nodejs为目标或如果您以浏览器为目标但使用"moduleResolution": "CommonJS"（您还需要提供节点类型）。

否则，你可以使用

import * as Logging from '@google-cloud/logging'

但在这种情况下，您需要声明此模块的类型

// logging.d.ts
declare module '@google-cloud/logging' {

  interface LogConfig {
    removeCircular: boolean
  }

  class Entry {
    metadata: object
    data: object
    constructor (metadata: object | null | undefined, data: object | string)
    constructor (data: object | string)
    toJSON (options?: LogConfig): any
  }

  interface WriteOptions {
    gaxOptions: object
    labels: object[]
    resource: object
  }

  type LogWriteCallback = (err: Error | null, apiResponse: object) => void
  type DeleteLogCallback = (err: Error | null, apiResponse: object) => void

  type LogWriteResponse = object[]
  type DeleteLogResponse = object[]

  type EntryArg = Entry | Entry[]

  class Log {
    constructor (logging: Logging, name: string, options: LogConfig)
    alert (entry: EntryArg, options?: WriteOptions, callback?: LogWriteCallback): Promise<LogWriteResponse>
    critical (entry: EntryArg, options?: WriteOptions, callback?: LogWriteCallback): Promise<LogWriteResponse>
    debug (entry: EntryArg, options?: WriteOptions, callback?: LogWriteCallback): Promise<LogWriteResponse>
    emergency (entry: EntryArg, options?: WriteOptions, callback?: LogWriteCallback): Promise<LogWriteResponse>
    info (entry: EntryArg, options?: WriteOptions, callback?: LogWriteCallback): Promise<LogWriteResponse>
    notice (entry: EntryArg, options?: WriteOptions, callback?: LogWriteCallback): Promise<LogWriteResponse>
    warning (entry: EntryArg, options?: WriteOptions, callback?: LogWriteCallback): Promise<LogWriteResponse>
    error (entry: EntryArg, options?: WriteOptions, callback?: LogWriteCallback): Promise<LogWriteResponse>
    write (entry: EntryArg, options?: WriteOptions, callback?: LogWriteCallback): Promise<LogWriteResponse>
    delete (gaxOptions: object): Promise<DeleteLogResponse>
    delete (gaxOptions: object, callback?: DeleteLogCallback): Promise<DeleteLogResponse>
    delete (callback?: DeleteLogCallback): Promise<DeleteLogResponse>
  }

  interface ClientConfig {
    projectId?: string
    keyFilename?: string
    email?: string
    credentials?: {
      client_email: string
      private_key: string
    }
    autoRetry?: boolean
    maxRetries?: number
    promise?: Function
  }

  class Logging {
    constructor (options: ClientConfig)
    log (name: string, options?: LogConfig): Log
    entry (resource: object | string | null | undefined, data: object | string): Entry
  }
  export = Logging
}

这个定义只是一个草稿，缺少很多功能，但我想这是必要的第一步:-)