无法与打字稿一起开玩笑-“找不到模块'打字稿'”

问题描述

我正在尝试使用Typescript开玩笑，但出现以下错误。该项目在webpack和ts-node中运行良好。出于某种原因，我无法使其开玩笑。

FAIL  src/__tests__/classes/Utils.spec.ts
● Test suite failed to run

Cannot find module 'typescript'

Require stack:
- /Users/myuser/repos/project/node_modules/ts-jest/dist/config/config-set.js
- /Users/myuser/repos/project/node_modules/ts-jest/dist/ts-jest-transformer.js
- /Users/myuser/repos/project/node_modules/ts-jest/dist/index.js
- /Users/myuser/repos/project/node_modules/@jest/transform/build/ScriptTransformer.js
- /Users/myuser/repos/project/node_modules/@jest/transform/build/index.js
- /Users/myuser/repos/project/node_modules/jest-runtime/build/index.js
- /Users/myuser/repos/project/node_modules/@jest/core/build/cli/index.js
- /Users/myuser/repos/project/node_modules/@jest/core/build/jest.js
- /Users/myuser/repos/project/node_modules/jest/node_modules/jest-cli/build/cli/index.js
- /Users/myuser/repos/project/node_modules/jest/node_modules/jest-cli/bin/jest.js
- /Users/myuser/repos/project/node_modules/jest/bin/jest.js
- /usr/local/lib/node_modules/jest/node_modules/import-local/index.js
- /usr/local/lib/node_modules/jest/bin/jest.js

jest.config.js

这是配置。我已经尝试了roots属性和moduleNameMapper的许多变体，但是无论我在配置中进行了什么更改，错误消息都是完全相同的。

module.exports = {
  preset: 'ts-jest',testEnvironment: 'node',roots: ['<rootDir>/src'],transform: {
    '^.+\\.tsx?$': 'ts-jest',},testRegex: '(/__tests__/.*|(\\.|/)(test|spec))\\.tsx?$',moduleFileExtensions: ['ts','tsx','js','jsx','json','node'],moduleDirectories: ['node_modules','src'],moduleNameMapper: {
    '^src/(.*)$': '<rootDir>/src/$1',}
};

tsconfig.json

{
    "compilerOptions": {
        "baseUrl": "./","paths": {
            "src/*": ["src/*"],"tests/*": ["__tests__/*"]
        },"target": "es6","module": "commonjs","esModuleInterop": true,"moduleResolution": "node","emitDecoratorMetadata": true,"experimentalDecorators": true,"sourceMap": true,"inlineSourceMap": false,"outDir": "dist","lib": ["es6","dom","esnext","esnext.asynciterable"],"typeRoots": ["node_modules/@types","src/typings"]
    },"awesomeTypescriptLoaderOptions": {
        "useBabel": true,"useCache": true,"useTranspileModule": true
    },"include": ["src/**/*.ts"],"exclude": ["./node_modules/*"]
}

Utils.spec.js

import { Utils } from 'src/utils/classes/Utils';

test('Generates a 6 digit number'),() => {
    expect(Utils.randomNumberGenerator(6).toHaveLength(6))
});

Utils.ts

export class Utils {
    public static randomNumberGenerator(length: number): number {
        const baseNumber: number = Number(1 + '0'.repeat(length - 1));
        const randomMultiplier: number = Math.floor(Math.random() * Number('9' + '0'.repeat(length - 1)));
        const randomToken: number = baseNumber + randomMultiplier;
        return randomToken;
    }
}

解决方法

@tmhao帮我解决了这个问题。

问题是未安装ts-jest。有点不清楚的错误消息。