成功解决后，带有打字稿的量角器找不到模块“量角器”

Question

这个问题要了我的命。请帮忙。 我有以下文件结构：

node_modules
    protractor
    typescript
package.json
register-popup.ts

package.json的内容

{
    "name": "typescriptProba",
    "version": "1.0.0",
    "description": "",
    "main": "index.js",
    "scripts": {
        "test": "echo \"Error: no test specified\" && exit 1"
    },
    "keywords": [],
    "author": "",
    "license": "ISC",
    "dependencies": {
         "protractor": "^4.0.11",
         "typescript": "^2.0.10"
    }
}

register-popup.ts的内容：

import { ElementFinder, element, by } from "protractor";

export class RegisterPopup {
    public registerWithFacebookButton: ElementFinder = element(by.css('li.facebook a'));
    public registerWithGoogleButton: ElementFinder = element(by.css('li.google a'));
    public registerWithEmailButton: ElementFinder = element(by.css('li.email a'));
    public registerWithMobileButton: ElementFinder = element(by.css('li.natel a'));

    constructor () {}

    openPopup() {
        element(by.css('.account.user')).click();
        element(by.id('openRegister')).click();
    }

    openRegisterByEmailPopup() {
        this.registerWithEmailButton.click();
    }

    openRegisterByPhonePopup() {
        this.registerWithMobileButton.click();
    }
}

为了将 ts 文件编译为 js 文件，我使用以下命令：

./node_modules/typescript/bin/tsc "./register-popup.ts" --module commonjs --noResolve --traceResolution

执行命令后出现以下错误：

error TS2307: Cannot find module 'protractor'.

但是我的模块跟踪解析是这样的：

======== Resolving module 'protractor' from '/Users/predraglazarevic/www/typescriptProba/register-popup.ts'. ========
Module resolution kind is not specified, using 'NodeJs'.
Loading module 'protractor' from 'node_modules' folder.
File '/Users/predraglazarevic/www/typescriptProba/node_modules/protractor.ts' does not exist.
File '/Users/predraglazarevic/www/typescriptProba/node_modules/protractor.tsx' does not exist.
File '/Users/predraglazarevic/www/typescriptProba/node_modules/protractor.d.ts' does not exist.
Found 'package.json' at '/Users/predraglazarevic/www/typescriptProba/node_modules/protractor/package.json'.
'package.json' has 'typings' field 'built/index.d.ts' that references '/Users/predraglazarevic/www/typescriptProba/node_modules/protractor/built/index.d.ts'.
File '/Users/predraglazarevic/www/typescriptProba/node_modules/protractor/built/index.d.ts' exist - use it as a name resolution result.
Resolving real path for '/Users/predraglazarevic/www/typescriptProba/node_modules/protractor/built/index.d.ts', result '/Users/predraglazarevic/www/typescriptProba/node_modules/protractor/built/index.d.ts'
======== Module name 'protractor' was successfully resolved to '/Users/predraglazarevic/www/typescriptProba/node_modules/protractor/built/index.d.ts'. ========

所以我有

模块名称“量角器”已成功解析

但仍有错误

错误 TS2307：找不到模块“量角器”。

为什么？

回答

当我省略 --noResolve 标志时，它正在工作。所以命令应该是

./node_modules/typescript/bin/tsc "./register-popup.ts" --module commonjs

Answer 1

首先你需要检查你的 tsconfig.json，你会看到 typeRoots

{
  "compileOnSave": false,
  "compilerOptions": {
    "declaration": false,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "lib": [
      "es2016"
    ],
    "module": "commonjs",
    "moduleResolution": "node",
    "outDir": "path/to/transpiled/files",
    "sourceMap": true,
    "target": "es6",
    "typeRoots": [
      "node_modules/@types"
    ]
  }
}

如果您有任何其他的definitelyTyped 模块，它们将被本地路径中的typeRoots 目录拾取：node_modules/@types。

Answer 2

尝试运行：

yarn install && yarn webpack:build 

应该下载所有缺失的模块并重建 UI。

Answer 3

我必须在我的 tsconfig.json 文件中将 moduleResolution 设置设置为 node。

"moduleResolution": "node"

之后，我就可以从量角器中导入浏览器等了。

import { browser } from 'protractor'

Answer 4

您没有在本地安装量角器模块/库。所以，

运行这个命令：npm install --save protractor。如果它不起作用。 试试这个：

1. 打开 VSCode 并点击查看 -> 终端

2. 导航到要安装量角器的文件夹。

3. 使用以下命令安装量角器。

npm 安装量角器 -g

4.重启VSCode。它会在你的本地添加 protractor.conf.js 文件。