如何从无服务器项目中删除'意外令牌导出'错误？

Question

我正在创建一个使用es7支持的无服务器框架的项目。但我得到一个意外的标记出口错误，当我尝试在本地运行我的功能使用以下命令

serverless invoke local --f hello 

我觉得我已经包含了所需的巴别塔的依赖 -

的package.json

{ 
    "name": "olep-app-api", 
    "version": "1.1.0", 
    "description": "A starter project for the Serverless Framework with ES7 support", 
    "main": "handler.js", 
    "scripts": { 
    "test": "echo \"Error: no test specified\" && exit 1" 
    }, 
    "author": "", 
    "license": "MIT", 
    "repository": { 
    "type": "git", 
    "url": "https://github.com/AnomalyInnovations/serverless-es7.git" 
    }, 
    "devDependencies": { 
    "aws-sdk": "^2.94.0", 
    "babel-core": "^6.26.0", 
    "babel-loader": "^7.1.2", 
    "babel-plugin-transform-runtime": "^6.23.0", 
    "babel-preset-es2015": "^6.24.1", 
    "babel-preset-stage-3": "^6.24.1", 
    "js-yaml": "^3.8.2", 
    "serverless-webpack": "^2.0.0", 
    "webpack": "^3.0.0", 
    "webpack-node-externals": "^1.6.0" 
    }, 
    "dependencies": { 
    "babel-runtime": "^6.23.0", 
    "source-map-support": "^0.4.14" 
    } 
} 

.babelrc

{ 
    "plugins": ["transform-runtime"], 
    "presets": ["es2015", "stage-3"] 
} 

serverless.yml

service: olep-17-api 

plugins: 
    - serverless-webpack 

custom: 
    webpackIncludeModules: true 

provider: 
    name: aws 
    runtime: nodejs6.10 
    stage: prod 
    region: ap-south-1 

    iamRoleStatements: 
    - Effect: Allow 
     Action: 
     - dynamodb:DescribeTable 
     - dynamodb:Query 
     - dynamodb:Scan 
     - dynamodb:GetItem 
     - dynamodb:PutItem 
     - dynamodb:UpdateItem 
     - dynamodb:DeleteItem 
     Resource: "arn:aws:dynamodb:ap-southeast-1:*:*" 

functions: 
    hello: 
    handler: handler.hello 
    events: 
     - http: 
      path: hello 
      method: get 

webpack.config.js

var yaml = require('js-yaml'); 
var fs = require('fs'); 
var path = require('path'); 
var nodeExternals = require('webpack-node-externals'); 

var handlerRegex = /\.[_$a-zA-Z\xA0-\uFFFF][_$a-zA-Z0-9\xA0-\uFFFF]*$/; 
var include = './_webpack/include.js'; 
var entries = {}; 

var doc = yaml.safeLoad(fs.readFileSync('serverless.yml', 'utf8')); 

// Find all the handler files in serverless.yml 
// and build the entry array with them 
for (var key in doc.functions) { 
    var handler = doc.functions[key].handler; 
    var entryKey = handler.replace(handlerRegex, ''); 

    // Add error handling and source map support 
    entries[entryKey] = [include, './' + entryKey + '.js']; 
} 

module.exports = { 
    entry: entries, 
    target: 'node', 
    // Generate sourcemaps for proper error messages 
    devtool: 'source-map', 
    // Since 'aws-sdk' is not compatible with webpack, 
    // we exclude all node dependencies 
    externals: [nodeExternals()], 
    // Run babel on all .js files and skip those in node_modules 
    module: { 
    rules: [{ 
     test: /\.js$/, 
     loader: 'babel-loader', 
     include: __dirname, 
     exclude: /node_modules/, 
    }] 
    }, 
    output: { 
    libraryTarget: 'commonjs', 
    path: path.join(__dirname, '.webpack'), 
    filename: '[name].js' 
    } 
}; 

handler.js

export const hello = async (event, context, callback) => { 
    const response = { 
    statusCode: 200, 
    headers: { 
     "Access-Control-Allow-Origin" : "*", // Required for CORS support to work 
     "Access-Control-Allow-Credentials" : true // Required for cookies, authorization headers with HTTPS 
    }, 
    body: JSON.stringify({ 
     message: `Go Serverless v1.0! ${(await message({ time: 1, copy: 'Your function executed successfully!'}))}`, 
     input: event, 
    }), 
    }; 

    callback(null, response); 
}; 

const message = ({ time, ...rest }) => new Promise((resolve, reject) => 
    setTimeout(() => { 
    resolve(`${rest.copy} (with a delay)`); 
    }, time * 1000) 
); 

我能做些什么来摆脱这个错误？

Answer 1

我看到这个错误，它是非描述性的。我相信这意味着正在抛出一个没有被捕获的例外。当出现运行时语法错误时也会出现，如使用未定义的变量。这是我的工作流程，与您的工作流程不同，但允许我设置断点并逐步执行代码。从这我可以确定坏的路线。

安装serverless-offline，以便您可以在本地运行项目。安装Visual Studio代码，以便您有一个IDE进行调试。我已将我的launch.json发布到Breakpoints not being hit when debugging Serverless in vscode设置一个断点，然后用浏览器或卷曲命中您的打开点。