Webpack 不包括部署无服务器应用程序的所有依赖项

Question

在 AWS 上部署无服务器 lambda 函数时出现错误

"errorMessage": "Please install pg package manually"

我观察到无服务器不包括来自 pakage.json 的所有依赖项。 pg 和 pg-hoster 包丢失。

Serverless: Packing external modules: source-map-support@^0.5.19, dotenv@^10.0.0, ajv@^8.6.1, 
ajv-errors@^3.0.0, @middy/core@^1.5.2, @middy/http-json-body-parser@^1.5.2, sequelize@6.6.5, 
bcryptjs@^2.4.3, jsonwebtoken@^8.5.1

我的 webpack.config 文件是

const path = require('path');
const slsw = require('serverless-webpack');
const nodeExternals = require('webpack-node-externals');
const TsconfigPathsPlugin = require('tsconfig-paths-webpack-plugin');
const ForkTsCheckerWebpackPlugin = require('fork-ts-checker-webpack-plugin');
/*
This line is only required if you are specifying `TS_NODE_PROJECT` for whatever reason.
*/
// delete process.env.TS_NODE_PROJECT;

module.exports = {
context: __dirname,
mode: slsw.lib.webpack.isLocal ? 'development' : 'production',
entry: slsw.lib.entries,
devtool: slsw.lib.webpack.isLocal ? 'eval-cheap-module-source-map' : 'source-map',
resolve: {
    extensions: ['.mjs', '.json', '.ts', 'js'],
    symlinks: false,
    cacheWithContext: false,
 plugins: [
    new TsconfigPathsPlugin({
      configFile: './tsconfig.paths.json',
     }),
   ],
 },
 output: {
   libraryTarget: 'commonjs',
   path: path.join(__dirname, '.webpack'),
   filename: '[name].js',
  },
  optimization: {
  concatenateModules: false,
 },
 target: 'node',
 externals: [nodeExternals()],
 module: {
   rules: [
     // all files with a `.ts` or `.tsx` extension will be handled by `ts-loader`
    {
       test: /\.(tsx?)$/,
       loader: 'ts-loader',
       exclude: [
         [
          path.resolve(__dirname, 'node_modules'),
          path.resolve(__dirname, '.serverless'),
          path.resolve(__dirname, '.webpack'),
        ],
      ],
      options: {
        transpileOnly: true,
        experimentalWatchApi: true,
      },
    },
  ],
},
plugins: [
  new ForkTsCheckerWebpackPlugin({
    eslint: {
       files: './src/**/*.{ts,tsx,js,jsx}', // required - same as command `eslint ./src/**/*. 
      {ts,tsx,js,jsx} --ext .ts,.tsx,.js,.jsx`
      },
    }),
  ],
};

我的 serverless.ts 文件看起来像

import type { AWS } from '@serverless/typescript';
import lambdas from './src/handlers/index';

const serverlessConfiguration: AWS = {
  service: 'tapit-backend',
  frameworkVersion: '2',
  custom: {
    webpack: {
      webpackConfig: './webpack.config.js',
      includeModules: true,
    },
  },
  plugins: ['serverless-webpack', 'serverless-offline', 'serverless-prune-plugin'],
  provider: {
    name: 'aws',
    runtime: 'nodejs14.x',
    apiGateway: {
      minimumCompressionSize: 1024,
      shouldStartNameWithService: true,
     },
    environment: {
      AWS_NODEJS_CONNECTION_REUSE_ENABLED: '1',
      NODE_ENV: 'dev',
    },
    lambdaHashingVersion: '20201221',
  },
  // import the function via paths
  functions: lambdas,
};

module.exports = serverlessConfiguration;

有人可以帮我解决我做错的地方吗？请

Answer 1

Full credit to this blog post

您正在开发一个 NodeJS + Webpack + Sequelize + pg + pg-hstore 应用程序。你编译所有东西，当你执行你的 webpack 包时，你有以下错误

throw new Error(`Please install ${moduleName} package manually`);
Error: Please install pg package manually

您需要使用 NPM 包“webpack-node-externals”从最终 bundle 中删除所有 nodes_modules 库。

为此，只需安装它

npm install --save-dev webpack-node-externals

在你的 webpack.config.js 文件中，你需要导入插件

const nodeExternals = require('webpack-node-externals');

在这个文件的“externals”部分，你需要声明

externals: [
    nodeExternals(),
],

你的最终包会更小，你不会有 Error: Please install pg package manually 错误信息了。