我正在尝试基于另一个名为“ sidebar-v2”（https://github.com/Turbo87/sidebar-v2）的简单npm软件包
由于这个原因，我试图将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，该异常会在下面发送给我：
> @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.
我已经尝试遵循StackOverflow上其他问题的答案，例如：
但是不幸的是，没有人对我工作。
当我尝试将.babelrc更新为：
{
"presets": ["@babel/preset-env", "es2015"]
}
错误更改为：
> @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.babelrc更新为：
{
"presets": ["@babel/preset-env", "es2015"]
}
并安装软件包：
npm install -S babel-preset-es2015
但是当我运行“ npm test”时，以下错误开始出现：
> @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.babelrc更新为：
{
"presets": ["@babel/preset-env", "@babel/preset-es2015"]
}
并安装软件包：
npm install -S @babel/preset-es2015
但是当我运行“ npm test”时，以下错误开始出现：
> @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'
答案 0 :(得分：1)
简短的解决方案。我的进出口也有类似的问题。
此外，Babel在 mocha版本7.2.0 和 npm版本6.14.4 中不能很好地工作。因此，我使用 esm 3.2.25 版本解决了该问题。
npm install --save-dev esm
我的package.json使用的是这个
"scripts": {
"test": "mocha -r esm --exit"
}
答案 1 :(得分：0)
我在github上获得了您的代码，然后看到了您的问题。
此问题出在您的 ol3-sidebar.js 中，在此文件的第一行中，您从文件 ol / control.js 导入了一个函数，但是该文件是在您的工作空间中不存在。因此运行测试时会出错。
答案 2 :(得分：0)
我有同样的问题。并设法在重新安装Windows之后解决了该问题，但仍然无法正常工作。
对我来说，项目文件夹位于通过符号链接访问的其他驱动器上。我有一个小的SSD可以引导，因此将项目文件夹放在第二个更大的磁盘驱动器上，并从我的主目录符号链接到此文件夹。
如果我直接导航到该文件夹，它将起作用。
我将向摩卡和通天塔团队报告。我不确定这是谁的问题。
答案 3 :(得分：0)
我认为您的问题来自Babel。首先尝试：
npx babel-upgrade
查看包babel-upgrade在不应用它们的情况下所做的修改，如果您满意的话，
npx babel-upgrade --write
应用修改。
答案 4 :(得分：0)
我遇到了类似的问题，不得不跑步
npm install --save-dev core-js@3
我的.bablerc是：
{
"presets": [["@babel/preset-env"]]
}
答案 5 :(得分：0)
我正在整个互联网上寻找解决方案。我想出了这个：
Dog或在npx mocha --require ts-node/register --require esm src/**/*.spec.ts
脚本中（两个选项均起作用，请选择您喜欢的任何一个）：
package.json不要忘记将"scripts": {
"test": "mocha -r esm -r ts-node/register src/**/*.spec.ts",
"test-ts": "ts-mocha -r esm -p tsconfig.json src/**/*.spec.ts"
}
添加到esm：
devDependencies因此在package.json中它将成为
npm install --save-dev esm