TypeScript模块解析不太适用于Cucumber-js

Question

我正在做一个小的概念验证Cucumber-js-使用TypeScript。到目前为止，一切都是fine...but，我找不到一种方法来正确地配置模块解析当使用tsconfig-paths。

这是我的项目结构：

.
├── cucumber.js
├── features
│   └── bank-account.feature
├── package.json
├── package-lock.json
├── step-definitions
│   └── bank-account.steps.ts
├── support
│   └── model
│       └── bank-account.model.ts
├── tsconfig.json
└── tslint.json

我正在使用cucumber-tsflow，所以“步骤定义”看起来像这样：

// import { BankAccount } from "@model/bank-account.model"; // ...trouble!
import { BankAccount } from "../support/model/bank-account.model";

import { expect } from "chai";
import { binding, given, then, when } from "cucumber-tsflow";

@binding()
export class BankAccountSteps {
  ...

  @when("{int} is deposited")
  public when(amount: number) {
    this.account.deposit(amount);
  }

  ...
}

我不能使用...but@model/bank-account.model，即使我在tsconfig.json和cucumber.js

# file: tsconfig.json
{
  "compilerOptions": {
    "baseUrl": ".",
    ...
    "paths": {
      "*": ["./*"],
      "@model/*": ["./support/model/*"]
    },
    ...
    "types": [
      "@types/chai",
      "@types/cucumber",
      "node"
    ]
  },
  "exclude": ["node_modules/"],
  "include": ["./step-definitions/**/*", "./support/**/*"]
}

# file: cucumber.js
const common = [
  "features/**/*.feature",
  "--require-module ts-node/register",
  // "--require-module tsconfig-paths/register",
  "--require step-definitions/**/*.ts",
  "--require support/**/*.ts"
].join(" ");

module.exports = {
  default: common,
};

一旦我“激活”tsconfig-paths-已读:取消评论"--require-module tsconfig-paths/register"内部cucumber.js我得到这个错误消息：

$ npm run test

> cucumber-js --profile default

TypeError: cucumber_1.Before is not a function
    at _.once (/home/x80486/Workshop/Development/cucumber-basics/node_modules/cucumber-tsflow/src/binding-decorator.ts:78:3)
    at /home/x80486/Workshop/Development/cucumber-basics/node_modules/underscore/underscore.js:957:21
    at /home/x80486/Workshop/Development/cucumber-basics/node_modules/cucumber-tsflow/src/binding-decorator.ts:38:5
    at __decorate (/home/x80486/Workshop/Development/cucumber-basics/step-definitions/bank-account.steps.ts:5:95)
    at Object. (/home/x80486/Workshop/Development/cucumber-basics/step-definitions/bank-account.steps.ts:8:30)
    at Module._compile (internal/modules/cjs/loader.js:776:30)
    at Module.m._compile (/home/x80486/Workshop/Development/cucumber-basics/node_modules/ts-node/src/index.ts:473:23)
    at Module._extensions..js (internal/modules/cjs/loader.js:787:10)
    at Object.require.extensions.(anonymous function) [as .ts] (/home/x80486/Workshop/Development/cucumber-basics/node_modules/ts-node/src/index.ts:476:12)
    at Module.load (internal/modules/cjs/loader.js:653:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
    at Function.Module._load (internal/modules/cjs/loader.js:585:3)
    at Module.require (internal/modules/cjs/loader.js:690:17)
    at require (internal/modules/cjs/helpers.js:25:18)
    at supportCodePaths.forEach.codePath (/home/x80486/Workshop/Development/cucumber-basics/node_modules/cucumber/lib/cli/index.js:142:42)
    at Array.forEach ()

任何精通TypeScript和/或黄瓜的人都可以解释一下这里发生了什么？

更新如果我删除cucumber.js并将所有选项传递给npm

脚本("test": "cucumber-js features/**/*.feature --require-module ts-node/register --require-module tsconfig-paths/register --require step-definitions/**/*.ts --require support/**/*.ts)它是有效的:令人兴奋的：另外，更改baseUrl到其他东西，而不是"./"例如，"./support"

，不删除cucumber.js成功了。

Answer 1

这个问题不是一个真正的解决方案，但它目前正在与

版本@cucumber/cucumber version 7.x-很可能更改被反向移植到以前的稳定版本。这里是一个有效的(类似模板的项目)来测试这一点。

Answer 2

我看到的第一件事是在您的cucumber配置文件中，您引用的是ts文件，而不是我相信cucumber-js要查找的编译后的typescript。尝试：

const common = [
  "features/**/*.feature",
  "--require-module ts-node/register",
  // "--require-module tsconfig-paths/register",
  "--require step-definitions/**/*.js",
  "--require support/**/*.js"
].join(" ");

此外，我不认为这是一个问题，但我总是将文件类型添加到我在tsconfig文件中包含的文件的末尾。

我一直计划将一个带有typescript的示例cucumber-js项目放到github上，供人们使用，所以这可能是我需要的动机:)