【发布时间】：2019-03-02 00:53:24
【问题描述】：
我正在尝试让我的 Node 应用程序以 npm start 启动。应用程序在启动时崩溃，我不知道为什么。我对 Node 和所有的东西都是全栈的。有人能理解发生了什么吗？
当我运行 npm start --verbose 我得到这个：
hunterhawley@hunter-test:~$ npm start --verbose
npm info it worked if it ends with ok
npm verb cli [ '/home/hunterhawley/.nvm/versions/node/v11.10.1/bin/node',
npm verb cli '/home/hunterhawley/.nvm/versions/node/v11.10.1/bin/npm',
npm verb cli 'start',
npm verb cli '--verbose' ]
npm info using npm@6.7.0
npm info using node@v11.10.1
npm verb config Skipping project config: /home/hunterhawley/.npmrc. (matches userconfig)
npm verb run-script [ 'prestart', 'start', 'poststart' ]
npm info lifecycle mern-starter@2.0.0~prestart: mern-starter@2.0.0
npm info lifecycle mern-starter@2.0.0~start: mern-starter@2.0.0
> mern-starter@2.0.0 start /home/hunterhawley
> cross-env BABEL_DISABLE_CACHE=1 NODE_ENV=development nodemon index.js
[nodemon] 1.17.5
[nodemon] reading config ./nodemon.json
[nodemon] to restart at any time, enter `rs`
[nodemon] or send SIGHUP to 31462 to restart
[nodemon] ignoring: .git node_modules/**/node_modules
[nodemon] watching: /home/hunterhawley/server/**/* Intl
[nodemon] watching extensions: js,json
[nodemon] starting `node index.js`
[nodemon] forking
[nodemon] child pid: 31475
[nodemon] watching 37 files
/home/hunterhawley/node_modules/babel-core/lib/transformation/file/index.js:558
throw err;
^
SyntaxError: /home/hunterhawley/server/server.js: Unexpected token (164:8)
162 | const store = configureStore({
163 | app: {
> 164 | ...initialAppState,
| ^
165 | user: { ...req.session.user },
166 | },
167 | });
at Parser.pp$5.raise (/home/hunterhawley/node_modules/babylon/lib/index.js:4454:13)
at Parser.pp.unexpected (/home/hunterhawley/node_modules/babylon/lib/index.js:1761:8)
at Parser.pp$3.parseIdentifier (/home/hunterhawley/node_modules/babylon/lib/index.js:4332:10)
at Parser.pp$3.parsePropertyName (/home/hunterhawley/node_modules/babylon/lib/index.js:4156:96)
at Parser.pp$3.parseObj (/home/hunterhawley/node_modules/babylon/lib/index.js:4045:12)
at Parser.pp$3.parseExprAtom (/home/hunterhawley/node_modules/babylon/lib/index.js:3719:19)
at Parser.pp$3.parseExprSubscripts (/home/hunterhawley/node_modules/babylon/lib/index.js:3494:19)
at Parser.pp$3.parseMaybeUnary (/home/hunterhawley/node_modules/babylon/lib/index.js:3474:19)
at Parser.pp$3.parseExprOps (/home/hunterhawley/node_modules/babylon/lib/index.js:3404:19)
at Parser.pp$3.parseMaybeConditional (/home/hunterhawley/node_modules/babylon/lib/index.js:3381:19)
[nodemon] app crashed - waiting for file changes before starting...
所以在我看来，这是一个 babel 问题。如果可以帮助您解决这个问题，我可以附上我的 index.js 或任何其他文件。谢谢！
编辑：我还想补充一点，安装过程（尽管需要一些工作）进行得很顺利，并且我在另一个终端窗口中运行了 MongoDB，这对于这个应用程序是必需的。我也尝试过直接运行 node index.js，但这也没有让我到任何地方。
编辑 2：这是我在安装答案 1 中给出的插件时得到的结果
npm WARN babel-plugin-webpack-loaders@0.9.0 requires a peer of webpack@>=1.12.9 <3.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN chunk-manifest-webpack-plugin@0.1.0 requires a peer of webpack@^1.4.0-beta6 but none is installed. You must install peer dependencies yourself.
npm WARN extract-text-webpack-plugin@1.0.1 requires a peer of webpack@^1.9.11 but none is installed. You must install peer dependencies yourself.
npm WARN webpack-dev-middleware@1.12.2 requires a peer of webpack@^1.0.0 || ^2.0.0 || ^3.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN webpack-dev-server@2.11.2 requires a peer of webpack@^2.2.0 || ^3.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN webpack-manifest-plugin@1.3.2 requires a peer of webpack@1 || 2 || 3 but none is installed. You must install peer dependencies yourself.
npm WARN @babel/plugin-proposal-object-rest-spread@7.3.4 requires a peer of @babel/core@^7.0.0-0 but none is installed. You must install peer dependencies yourself.
npm WARN @babel/plugin-syntax-object-rest-spread@7.2.0 requires a peer of @babel/core@^7.0.0-0 but none is installed. You must install peer dependencies yourself.
npm WARN mern-starter@2.0.0 No repository field.
+ @babel/plugin-proposal-object-rest-spread@7.3.4
added 3 packages from 1 contributor and audited 20460 packages in 22.759s
编辑 3：添加我的 webpack.config.babel.js 文件
var cssnext = require('postcss-cssnext');
var postcssFocus = require('postcss-focus');
var postcssReporter = require('postcss-reporter');
var cssModulesIdentName = '[name]__[local]__[hash:base64:5]';
if (process.env.NODE_ENV === 'production') {
cssModulesIdentName = '[hash:base64]';
}
module.exports = {
output: {
publicPath: '/',
libraryTarget: 'commonjs2',
},
resolve: {
extensions: ['', '.js', '.jsx'],
modules: [
'client',
'node_modules',
],
},
module: {
loaders: [
{
test: /\.css$/,
exclude: /node_modules/,
loader: 'style-loader!css-loader?localIdentName=' + cssModulesIdentName + '&modules&importLoaders=1&sourceMap!postcss-loader',
},
{
test: /\.jpe?g$|\.gif$|\.png$|\.svg$/i,
loader: 'url-loader?limit=10000',
},
],
},
postcss: () => [
postcssFocus(),
cssnext({
browsers: ['last 2 versions', 'IE > 10'],
}),
postcssReporter({
clearMessages: true,
}),
],
};
【问题讨论】：
-
你的节点版本是多少？
-
所以我用 11.10.1 和 6.0.0 尝试过，我尝试用 6.0.0 的原因是因为和/为我写这个的人（我雇了他，现在我正在尝试自己学习 Node）由于某种原因，生产服务器在 6.0.0 中运行。
标签： javascript node.js npm babeljs