[英]babel-loader error - TypeError: val is not a function
我正在嘗試使用webpack和babel,我收到的錯誤似乎並不在網上。 在我測試的時候,這是非常簡單的js,它仍然給我錯誤的地方,它不應該。
var test = () => {
console.log("Test")
}
test()
我收到錯誤:
ERROR in ./dist/main.js
Module build failed (from ./node_modules/babel-loader/lib/index.js):
TypeError: val is not a function
ERROR in ./dist/main.js
Module build failed (from ./node_modules/babel-loader/lib/index.js):
TypeError: val is not a function
at cache.using (C:\Users\Bacon\Desktop\ReactProj\jsx\node_modules\@babel\core\lib\config\caching.js:179:47)
at CacheConfigurator.using (C:\Users\Bacon\Desktop\ReactProj\jsx\node_modules\@babel\core\lib\config\caching.js:132:17)
at Object.cacheFn [as cache] (C:\Users\Bacon\Desktop\ReactProj\jsx\node_modules\@babel\core\lib\config\caching.js:179:18)
at module.exports (C:\Users\Bacon\Desktop\ReactProj\jsx\babel.config.js:2:9)
at readConfigJS (C:\Users\Bacon\Desktop\ReactProj\jsx\node_modules\@babel\core\lib\config\files\configuration.js:212:15)
at cachedFunction (C:\Users\Bacon\Desktop\ReactProj\jsx\node_modules\@babel\core\lib\config\caching.js:33:19)
at readConfig (C:\Users\Bacon\Desktop\ReactProj\jsx\node_modules\@babel\core\lib\config\files\configuration.js:173:56) at findRootConfig (C:\Users\Bacon\Desktop\ReactProj\jsx\node_modules\@babel\core\lib\config\files\configuration.js:148:16)
at buildRootChain (C:\Users\Bacon\Desktop\ReactProj\jsx\node_modules\@babel\core\lib\config\config-chain.js:78:44)
at loadPrivatePartialConfig (C:\Users\Bacon\Desktop\ReactProj\jsx\node_modules\@babel\core\lib\config\partial.js:85:55)
at Object.loadPartialConfig (C:\Users\Bacon\Desktop\ReactProj\jsx\node_modules\@babel\core\lib\config\partial.js:110:18)
at Object.<anonymous> (C:\Users\Bacon\Desktop\ReactProj\jsx\node_modules\babel-loader\lib\index.js:140:26)
at Generator.next (<anonymous>)
at asyncGeneratorStep (C:\Users\Bacon\Desktop\ReactProj\jsx\node_modules\babel-loader\lib\index.js:3:103)
at _next (C:\Users\Bacon\Desktop\ReactProj\jsx\node_modules\babel-loader\lib\index.js:5:194)
at C:\Users\Bacon\Desktop\ReactProj\jsx\node_modules\babel-loader\lib\index.js:5:364
at new Promise (<anonymous>)
at Object.<anonymous> (C:\Users\Bacon\Desktop\ReactProj\jsx\node_modules\babel-loader\lib\index.js:5:97)
at Object._loader (C:\Users\Bacon\Desktop\ReactProj\jsx\node_modules\babel-loader\lib\index.js:220:18)
at Object.loader (C:\Users\Bacon\Desktop\ReactProj\jsx\node_modules\babel-loader\lib\index.js:56:18)
at Object.<anonymous> (C:\Users\Bacon\Desktop\ReactProj\jsx\node_modules\babel-loader\lib\index.js:51:12)
我的代碼中沒有任何val,所以我看不出它出錯的地方。 這是我的project.json中的devDependencies
"devDependencies": {
"@babel/core": "^7.3.4",
"@babel/plugin-proposal-class-properties": "^7.3.4",
"@babel/preset-env": "^7.3.4",
"@babel/preset-es2015": "^7.0.0-beta.53",
"@babel/preset-react": "^7.0.0",
"babel-loader": "^8.0.5",
"standard": "^12.0.1",
"webpack": "^4.29.5",
"webpack-cli": "^3.2.3"
}
我一直試圖弄清楚這幾個小時無濟於事,我瘋了卻無法在谷歌上找到它。
在babel.config.js
,我將app.cache()
的參數設置為true
,現在可以正常工作了。
如果你使用babel.config.js
而不是.babelrc
而且你有這個:
module.exports = api => {
api.cache();
return {
...
}
}
cache
需要一個布爾參數。 所以要么將true
或false
傳遞給cache()
就像這樣: api.cache(true);
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