无服务器异步功能错误

Question

我正在使用无服务器来运行lambda函数。

尝试执行时面临问题 sls invoke local --function myFunction

exports.myFunction = async (event) => {
                         ^
SyntaxError: Unexpected token (
    at createScript (vm.js:56:10)
    at Object.runInThisContext (vm.js:97:10)
    at Module._compile (module.js:542:28)
    at Object.Module._extensions..js (module.js:579:10)

无服务器配置看起来像这样。

serverless.yaml

service: myService

provider:
  name: aws
  runtime: nodejs8.10
  stage: ${opt:stage, 'dev'}
  region: eu-west-1

  environment:
    CUSTOM_ENV: ${opt:stage, 'dev'}


functions:
  myFunction:
    handler: index.myFunction
    events:
      - http: 
          cors: true
          path: /{proxy+}
          method: POST
plugins:
  - serverless-offline
  - serverless-webpack

webpack.config.js

const slsw = require("serverless-webpack");
const nodeExternals = require("webpack-node-externals");
const path = require('path');

module.exports = {
  entry: slsw.lib.entries,
  target: "node",
  // Generate sourcemaps for proper error messages
  devtool: 'source-map',

  mode: slsw.lib.webpack.isLocal ? "development" : "production",

  optimization: {
    // We no not want to minimize our code.
    minimize: false
  },
  performance: {
    // Turn off size warnings for entry points
    hints: false
  },


};

运行命令时 sls offline start

一切正常，直到找到功能路由为止。

Answer 1

sls invoke local 通过模拟AWS Lambda环境在本地运行代码。因此，请确保在开发机中安装了8号及更高版本的节点，以便异步等待本机支持。在node --version本地运行以检查您的节点开发版本。