babel@7 和 jest 配置 [英] babel@7 and jest configuration

问题描述

也许你可以帮助我?我尝试配置 jest 以使用 babel@7所以我有:

"jest": "^23.4.1","@babel/core": "^7.0.0-beta.54","babel-7-jest": "^21.3.3","babel-jest": "^20.0.3",

和 package.json 中的 jest 配置

玩笑":{转变": {"^.+\.js$": "babel-7-jest",},

得到了

TypeError [ERR_INVALID_ARG_TYPE]:路径"参数必须是字符串类型

但是如果我使用

玩笑":{转变": {"^.+\.js$": "babel-jest",},

我得到了

需要 Babel "^7.0.0-0"，但加载了 "6.26.3".如果你确定你有一个兼容版本的@babel/core，很可能是你的构建过程中加载了错误的版本.检查此错误的堆栈跟踪以查找未提及@babel/core"或babel-core"的第一个条目，以查看调用 Babel 的内容.

babel 配置:https://gist.github.com/SilentImp/1506e9c26d16d9839a>

也许你有一些想法?

解决方案

我相信我已经找到了一个可行的解决方案(不，感谢 Jest 团队提供了损坏的文档并绕过了围绕这个问题的 GitHub 问题).

您的 package.json 的 devDependencies 部分需要以下内容:

 "devDependencies": {"@babel/core": "^7.0.0-beta.54","@babel/preset-env": "^7.0.0-beta.54","babel-core": "^7.0.0-bridge.0","babel-jest": "^23.4.0","bili": "^3.1.2","开玩笑": "^23.4.1",再生器运行时":^0.12.0"}

.babelrc 中的以下内容:

<代码>{预设":[["@babel/preset-env",{调试":假，目标":{浏览器":[最后三个版本"]}}]]}

在我的特定项目中，我不需要使用 Jest 配置，所以我删除了我的空 jest.config.js 文件.

要点:

• 删除 babel-7-jest 因为它已被弃用，因为现在有 官方支持.
• 确保以后只使用 @babel/xyz 包 - 我安装的 babel-core 桥接器是使用最新 Babel 7 的官方"方式. 我想，随着一切迁移到 Babel 7，这种需求将在未来的某个时候被移除.
• 您现在可以使用 ES6+ 功能，包括 import/export，而不再需要过时的 require().

如果您想获得更详细的通过/失败测试日志，请将其放在您的 jest.config.js 中:

module.exports = {详细":真实}

Maybe you may help me? I try to configure jest to use babel@7 So I have:

"jest": "^23.4.1",
"@babel/core": "^7.0.0-beta.54",
"babel-7-jest": "^21.3.3",
"babel-jest": "^20.0.3",

And jest config inside package.json

"jest": {
    "transform": {
      "^.+\.js$": "babel-7-jest",
    },

And got

TypeError [ERR_INVALID_ARG_TYPE]: The "path" argument must be of type string

But if I use

"jest": {
    "transform": {
      "^.+\.js$": "babel-jest",
    },

I got

Requires Babel "^7.0.0-0", but was loaded with "6.26.3". If you are sure you have a compatible version of @babel/core, it is likely that something in your build process is loading the wrong version. Inspect the stack trace of this error to look for the first entry that doesn't mention "@babel/core" or "babel-core" to see what is calling Babel.

babel config: https://gist.github.com/SilentImp/1506e9c26d16d9839a4469c6f3ae5c4d

Maybe you have some ideas?

解决方案

I believe I have found a working solution (no thanks to the Jest team providing broken documentation and evading GitHub issues around this issue).

You need the following in your devDependencies section of your package.json:

  "devDependencies": {
    "@babel/core": "^7.0.0-beta.54",
    "@babel/preset-env": "^7.0.0-beta.54",
    "babel-core": "^7.0.0-bridge.0",
    "babel-jest": "^23.4.0",
    "bili": "^3.1.2",
    "jest": "^23.4.1",
    "regenerator-runtime": "^0.12.0"
  }

The following in your .babelrc:

{
    "presets": [
        [
            "@babel/preset-env",
            {
                "debug": false,
                "targets": {
                    "browsers": [
                        "last 3 versions"
                    ]
                }
            }
        ]
    ]
}

In my particular project I did not need to use the Jest config so I deleted my empty jest.config.js file.

Key points:

• Remove babel-7-jest as this is deprecated as there is now official support for it.
• Make sure to only use @babel/xyz packages going forward - the babel-core bridge one I have installed is the "official" way to use latest Babel 7. I imagine this need will be removed at some point in the future as everything migrates to Babel 7.
• You can now use ES6+ features including import/export and no longer need the antiquated require().

Edit:

If you want to have a more detailed log of passing/failing tests then put this in your jest.config.js:

module.exports = {
    "verbose": true   
}

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