javascript - Mocha 6，巴别塔 7，ES6 : SyntaxError: Unexpected token export-6ren

javascript - Mocha 6，巴别塔 7，ES6 : SyntaxError: Unexpected token export

转载作者：搜寻专家更新时间：2023-10-31 23:26:01

我正在尝试创建一个基于另一个名为“sidebar-v2”(https://github.com/Turbo87/sidebar-v2)的简单 npm 包

出于这个原因，我尝试将 JS 代码更新为 ES6，但是当我尝试测试更新是否正常时，mocha 引发了一个异常，我在下面发送了该异常:

> @rmmariano/ol-sb@1.0.0-rc.1 test /home/inpe/Documents/datainfo/npm_packages/ol-sb
> mocha --require @babel/register

/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/ol/control.js:5
export {default as Attribution} from './control/Attribution.js';
^^^^^^

SyntaxError: Unexpected token export
    at new Script (vm.js:85:7)
    at createScript (vm.js:266:10)
    at Object.runInThisContext (vm.js:314:10)
    at Module._compile (internal/modules/cjs/loader.js:698:28)
    at Module._compile (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/pirates/lib/index.js:99:24)
    at Module._extensions..js (internal/modules/cjs/loader.js:749:10)
    at Object.newLoader [as .js] (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/pirates/lib/index.js:104:7)
    at Module.load (internal/modules/cjs/loader.js:630:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:570:12)
    at Function.Module._load (internal/modules/cjs/loader.js:562:3)
    at Module.require (internal/modules/cjs/loader.js:667:17)
    at require (internal/modules/cjs/helpers.js:20:18)
    at Object.<anonymous> (/home/inpe/Documents/datainfo/npm_packages/ol-sb/src/ol3-sidebar.js:1:1)
    at Module._compile (internal/modules/cjs/loader.js:738:30)
    at Module._compile (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/pirates/lib/index.js:99:24)
    at Module._extensions..js (internal/modules/cjs/loader.js:749:10)
    at Object.newLoader [as .js] (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/pirates/lib/index.js:104:7)
    at Module.load (internal/modules/cjs/loader.js:630:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:570:12)
    at Function.Module._load (internal/modules/cjs/loader.js:562:3)
    at Module.require (internal/modules/cjs/loader.js:667:17)
    at require (internal/modules/cjs/helpers.js:20:18)
    at Object.<anonymous> (/home/inpe/Documents/datainfo/npm_packages/ol-sb/src/index.js:1:1)
    at Module._compile (internal/modules/cjs/loader.js:738:30)
    at Module._compile (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/pirates/lib/index.js:99:24)
    at Module._extensions..js (internal/modules/cjs/loader.js:749:10)
    at Object.newLoader [as .js] (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/pirates/lib/index.js:104:7)
    at Module.load (internal/modules/cjs/loader.js:630:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:570:12)
    at Function.Module._load (internal/modules/cjs/loader.js:562:3)
    at Module.require (internal/modules/cjs/loader.js:667:17)
    at require (internal/modules/cjs/helpers.js:20:18)
    at Object.<anonymous> (/home/inpe/Documents/datainfo/npm_packages/ol-sb/test/test.js:4:1)
    at Module._compile (internal/modules/cjs/loader.js:738:30)
    at Module._compile (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/pirates/lib/index.js:99:24)
    at Module._extensions..js (internal/modules/cjs/loader.js:749:10)
    at Object.newLoader [as .js] (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/pirates/lib/index.js:104:7)
    at Module.load (internal/modules/cjs/loader.js:630:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:570:12)
    at Function.Module._load (internal/modules/cjs/loader.js:562:3)
    at Module.require (internal/modules/cjs/loader.js:667:17)
    at require (internal/modules/cjs/helpers.js:20:18)
    at /home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/mocha/lib/mocha.js:327:36
    at Array.forEach (<anonymous>)
    at Mocha.loadFiles (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/mocha/lib/mocha.js:324:14)
    at Mocha.run (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/mocha/lib/mocha.js:801:10)
    at Object.exports.singleRun (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/mocha/lib/cli/run-helpers.js:207:16)
    at exports.runMocha (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/mocha/lib/cli/run-helpers.js:300:13)
    at Object.exports.handler.argv [as handler] (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/mocha/lib/cli/run.js:296:3)
    at Object.runCommand (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/yargs/lib/command.js:238:44)
    at Object.parseArgs [as _parseArgs] (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/yargs/yargs.js:1089:24)
    at Object.parse (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/yargs/yargs.js:566:25)
    at Object.exports.main (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/mocha/lib/cli/cli.js:62:6)
    at Object.<anonymous> (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/mocha/bin/_mocha:10:23)
    at Module._compile (internal/modules/cjs/loader.js:738:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:749:10)
    at Module.load (internal/modules/cjs/loader.js:630:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:570:12)
    at Function.Module._load (internal/modules/cjs/loader.js:562:3)
    at Function.Module.runMain (internal/modules/cjs/loader.js:801:12)
    at internal/main/run_main_module.js:21:11
npm ERR! Test failed.  See above for more details.

我已经尝试在 StackOverflow 上关注其他问题的答案，例如:

但不幸的是，没有一个对我有用。

当我尝试将 .babelrc 更新为:

{
    "presets": ["@babel/preset-env", "es2015"]
}

错误变为:

> @rmmariano/ol-sb@1.0.0-rc.1 test /home/inpe/Documents/datainfo/npm_packages/ol-sb
> mocha --require @babel/register

/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/yargs/yargs.js:1148
      else throw err
           ^

Error: Cannot find module 'babel-preset-es2015' from '/home/inpe/Documents/datainfo/npm_packages/ol-sb'
    at Function.module.exports [as sync] (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/resolve/lib/sync.js:58:15)
    at resolveStandardizedName (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/@babel/core/lib/config/files/plugins.js:101:31)
    at resolvePreset (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/@babel/core/lib/config/files/plugins.js:58:10)
    at loadPreset (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/@babel/core/lib/config/files/plugins.js:77:20)
    at createDescriptor (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/@babel/core/lib/config/config-descriptors.js:154:9)
    at items.map (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/@babel/core/lib/config/config-descriptors.js:109:50)
    at Array.map (<anonymous>)
    at createDescriptors (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/@babel/core/lib/config/config-descriptors.js:109:29)
    at createPresetDescriptors (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/@babel/core/lib/config/config-descriptors.js:101:10)
    at presets (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/@babel/core/lib/config/config-descriptors.js:47:19)
    at mergeChainOpts (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/@babel/core/lib/config/config-chain.js:320:26)
    at /home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/@babel/core/lib/config/config-chain.js:283:7
    at buildRootChain (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/@babel/core/lib/config/config-chain.js:120:22)
    at loadPrivatePartialConfig (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/@babel/core/lib/config/partial.js:85:55)
    at loadFullConfig (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/@babel/core/lib/config/full.js:43:39)
    at loadOptions (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/@babel/core/lib/config/index.js:27:36)
    at OptionManager.init (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/@babel/core/lib/index.js:231:36)
    at compile (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/@babel/register/lib/node.js:61:42)
    at compileHook (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/@babel/register/lib/node.js:102:12)
    at Module._compile (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/pirates/lib/index.js:93:29)
    at Module._extensions..js (internal/modules/cjs/loader.js:749:10)
    at Object.newLoader [as .js] (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/pirates/lib/index.js:104:7)
    at Module.load (internal/modules/cjs/loader.js:630:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:570:12)
    at Function.Module._load (internal/modules/cjs/loader.js:562:3)
    at Module.require (internal/modules/cjs/loader.js:667:17)
    at require (internal/modules/cjs/helpers.js:20:18)
    at /home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/mocha/lib/mocha.js:327:36
    at Array.forEach (<anonymous>)
    at Mocha.loadFiles (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/mocha/lib/mocha.js:324:14)
    at Mocha.run (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/mocha/lib/mocha.js:801:10)
    at Object.exports.singleRun (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/mocha/lib/cli/run-helpers.js:207:16)
    at exports.runMocha (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/mocha/lib/cli/run-helpers.js:300:13)
    at Object.exports.handler.argv [as handler] (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/mocha/lib/cli/run.js:296:3)
    at Object.runCommand (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/yargs/lib/command.js:238:44)
    at Object.parseArgs [as _parseArgs] (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/yargs/yargs.js:1089:24)
    at Object.parse (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/yargs/yargs.js:566:25)
    at Object.exports.main (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/mocha/lib/cli/cli.js:62:6)
    at Object.<anonymous> (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/mocha/bin/_mocha:10:23)
    at Module._compile (internal/modules/cjs/loader.js:738:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:749:10)
    at Module.load (internal/modules/cjs/loader.js:630:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:570:12)
    at Function.Module._load (internal/modules/cjs/loader.js:562:3)
    at Function.Module.runMain (internal/modules/cjs/loader.js:801:12)
    at internal/main/run_main_module.js:21:11
npm ERR! Test failed.  See above for more details.

package.json

{
  ...
  "scripts": {
    "start": "nodemon --exec babel-node ./src/index.js",
    "test": "./node_modules/.bin/mocha --require @babel/register"
  },
  "devDependencies": {
    "@babel/cli": "^7.2.3",
    "@babel/core": "^7.3.4",
    "@babel/node": "^7.2.2",
    "@babel/preset-env": "^7.3.4",
    "@babel/register": "^7.0.0",
    "chai": "^4.2.0",
    "mocha": "^6.0.2",
    "nodemon": "^1.18.10"
  },
  "dependencies": {
    "ol": "^5.3.1"
  }
}

.babelrc

{
    "presets": ["@babel/preset-env"]
}

有人可以帮我吗？

源代码可以在这里找到:https://github.com/rmmariano/ol-sb

编辑 1:

我尝试将我的 .babelrc 更新为:

{
    "presets": ["@babel/preset-env", "es2015"]
}

然后安装包:

npm install -S babel-preset-es2015

但是当我运行“npm test”时开始出现以下错误:

> @rmmariano/ol-sb@1.0.0-rc.1 test /home/inpe/Documents/datainfo/npm_packages/ol-sb
> mocha --require @babel/register

/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/yargs/yargs.js:1148
      else throw err
           ^

Error: Plugin/Preset files are not allowed to export objects, only functions. In /home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/babel-preset-es2015/lib/index.js
    at createDescriptor (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/@babel/core/lib/config/config-descriptors.js:178:11)
    at items.map (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/@babel/core/lib/config/config-descriptors.js:109:50)
    at Array.map (<anonymous>)
    at createDescriptors (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/@babel/core/lib/config/config-descriptors.js:109:29)
    at createPresetDescriptors (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/@babel/core/lib/config/config-descriptors.js:101:10)
    at presets (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/@babel/core/lib/config/config-descriptors.js:47:19)
    at mergeChainOpts (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/@babel/core/lib/config/config-chain.js:320:26)
    at /home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/@babel/core/lib/config/config-chain.js:283:7
    at buildRootChain (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/@babel/core/lib/config/config-chain.js:120:22)
    at loadPrivatePartialConfig (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/@babel/core/lib/config/partial.js:85:55)
    at loadFullConfig (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/@babel/core/lib/config/full.js:43:39)
    at loadOptions (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/@babel/core/lib/config/index.js:27:36)
    at OptionManager.init (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/@babel/core/lib/index.js:231:36)
    at compile (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/@babel/register/lib/node.js:61:42)
    at compileHook (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/@babel/register/lib/node.js:102:12)
    at Module._compile (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/pirates/lib/index.js:93:29)
    at Module._extensions..js (internal/modules/cjs/loader.js:749:10)
    at Object.newLoader [as .js] (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/pirates/lib/index.js:104:7)
    at Module.load (internal/modules/cjs/loader.js:630:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:570:12)
    at Function.Module._load (internal/modules/cjs/loader.js:562:3)
    at Module.require (internal/modules/cjs/loader.js:667:17)
    at require (internal/modules/cjs/helpers.js:20:18)
    at /home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/mocha/lib/mocha.js:327:36
    at Array.forEach (<anonymous>)
    at Mocha.loadFiles (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/mocha/lib/mocha.js:324:14)
    at Mocha.run (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/mocha/lib/mocha.js:801:10)
    at Object.exports.singleRun (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/mocha/lib/cli/run-helpers.js:207:16)
    at exports.runMocha (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/mocha/lib/cli/run-helpers.js:300:13)
    at Object.exports.handler.argv [as handler] (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/mocha/lib/cli/run.js:296:3)
    at Object.runCommand (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/yargs/lib/command.js:238:44)
    at Object.parseArgs [as _parseArgs] (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/yargs/yargs.js:1089:24)
    at Object.parse (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/yargs/yargs.js:566:25)
    at Object.exports.main (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/mocha/lib/cli/cli.js:62:6)
    at Object.<anonymous> (/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/mocha/bin/_mocha:10:23)
    at Module._compile (internal/modules/cjs/loader.js:738:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:749:10)
    at Module.load (internal/modules/cjs/loader.js:630:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:570:12)
    at Function.Module._load (internal/modules/cjs/loader.js:562:3)
    at Function.Module.runMain (internal/modules/cjs/loader.js:801:12)
    at internal/main/run_main_module.js:21:11
npm ERR! Test failed.  See above for more details.

编辑2:

我尝试将我的 .babelrc 更新为:

{
    "presets": ["@babel/preset-env", "@babel/preset-es2015"]
}

然后安装包:

npm install -S @babel/preset-es2015

但是当我运行“npm test”时开始出现以下错误:

> @rmmariano/ol-sb@1.0.0-rc.1 test /home/inpe/Documents/datainfo/npm_packages/ol-sb
> mocha --require @babel/register

/home/inpe/Documents/datainfo/npm_packages/ol-sb/node_modules/yargs/yargs.js:1148
      else throw err
           ^

Error: Cannot find module '@babel/preset-es2015' from '/home/inpe/Documents/datainfo/npm_packages/ol-sb'

最佳答案

简短的解决方案。我在 import/export 方面遇到了类似的问题。

此外，Babel 不能很好地与 mocha 版本 7.2.0 和 npm 版本 6.14.4 配合使用。所以我使用 esm 版本 3.2.25 解决了这个问题。

npm install --save-dev esm

我的 package.json 正在使用这个:

"scripts": {
  "test": "mocha -r esm --exit"
}

关于javascript - Mocha 6，巴别塔 7，ES6 : SyntaxError: Unexpected token export，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/55165721/

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javascript - Mocha 6，巴别塔 7，ES6 : SyntaxError: Unexpected token export