Building typeorm with webpack: Module not found error

Issue type:

[X] question [ ] bug report [ ] feature request [ ] documentation issue

Database system/driver:

[ ] cordova [ ] mongodb [ ] mssql [ ] mysql / mariadb [X] oracle [ ] postgres [ ] cockroachdb [ ] sqlite [ ] sqljs [ ] react-native [ ] expo

TypeORM version:

[X] latest [ ] @next [ ] 0.x.x (or put your version here)

Steps to reproduce or a small repository showing the problem:

1. Clone repo https://github.com/typeorm/typescript-example
2. npm install dependencies
3. run web pack

Any pointers will be greatly appreciated. Thanks

Here is my webpack config

module.exports = [ { entry: './src/index.ts', target: 'node', mode, devtool, module: { rules: [ { test: /\.tsx?$/, use: 'ts-loader', exclude: /node_modules/ } ] }, resolve: { extensions: [ '.tsx', '.ts', '.js' ] }, output: { filename: 'server.js', path: path.resolve(__dirname, 'dist') }, node: { __dirname: false, __filename: false, } } ];

Build Errors

WARNING in ./node_modules/parse5/lib/index.js 55:23-49 Critical dependency: the request of a dependency is an expression @ ./node_modules/cli-highlight/dist/index.js @ ./node_modules/typeorm/platform/PlatformTools.js @ ./node_modules/typeorm/index.js @ ./src/index.ts

WARNING in ./node_modules/app-root-path/lib/app-root-path.js 14:10-56
Critical dependency: the request of a dependency is an expression
 @ ./node_modules/app-root-path/index.js
 @ ./node_modules/typeorm/platform/PlatformTools.js
 @ ./node_modules/typeorm/index.js
 @ ./src/index.ts

WARNING in ./node_modules/typeorm/platform/PlatformTools.js 112:23-85
Critical dependency: the request of a dependency is an expression
 @ ./node_modules/typeorm/index.js
 @ ./src/index.ts

WARNING in ./node_modules/typeorm/platform/PlatformTools.js 107:27-40
Critical dependency: the request of a dependency is an expression
 @ ./node_modules/typeorm/index.js
 @ ./src/index.ts

WARNING in ./node_modules/typeorm/platform/PlatformTools.js
Module not found: Error: Can't resolve 'ioredis' in '/Users/bgottip/Desktop/template/webpack_orm/typescript-example/node_modules/typeorm/platform'
 @ ./node_modules/typeorm/platform/PlatformTools.js
 @ ./node_modules/typeorm/index.js
 @ ./src/index.ts

WARNING in ./node_modules/typeorm/platform/PlatformTools.js
Module not found: Error: Can't resolve 'mongodb' in '/Users/bgottip/Desktop/template/webpack_orm/typescript-example/node_modules/typeorm/platform'
 @ ./node_modules/typeorm/platform/PlatformTools.js
 @ ./node_modules/typeorm/index.js
 @ ./src/index.ts

WARNING in ./node_modules/typeorm/platform/PlatformTools.js
Module not found: Error: Can't resolve 'mssql' in '/Users/bgottip/Desktop/template/webpack_orm/typescript-example/node_modules/typeorm/platform'
 @ ./node_modules/typeorm/platform/PlatformTools.js
 @ ./node_modules/typeorm/index.js
 @ ./src/index.ts

WARNING in ./node_modules/typeorm/platform/PlatformTools.js
Module not found: Error: Can't resolve 'mysql2' in '/Users/bgottip/Desktop/template/webpack_orm/typescript-example/node_modules/typeorm/platform'
 @ ./node_modules/typeorm/platform/PlatformTools.js
 @ ./node_modules/typeorm/index.js
 @ ./src/index.ts

WARNING in ./node_modules/typeorm/platform/PlatformTools.js
Module not found: Error: Can't resolve 'oracledb' in '/Users/bgottip/Desktop/template/webpack_orm/typescript-example/node_modules/typeorm/platform'
 @ ./node_modules/typeorm/platform/PlatformTools.js
 @ ./node_modules/typeorm/index.js
 @ ./src/index.ts

WARNING in ./node_modules/typeorm/platform/PlatformTools.js
Module not found: Error: Can't resolve 'pg' in '/Users/bgottip/Desktop/template/webpack_orm/typescript-example/node_modules/typeorm/platform'
 @ ./node_modules/typeorm/platform/PlatformTools.js
 @ ./node_modules/typeorm/index.js
 @ ./src/index.ts

WARNING in ./node_modules/typeorm/platform/PlatformTools.js
Module not found: Error: Can't resolve 'pg-native' in '/Users/bgottip/Desktop/template/webpack_orm/typescript-example/node_modules/typeorm/platform'
 @ ./node_modules/typeorm/platform/PlatformTools.js
 @ ./node_modules/typeorm/index.js
 @ ./src/index.ts

WARNING in ./node_modules/typeorm/platform/PlatformTools.js
Module not found: Error: Can't resolve 'pg-query-stream' in '/Users/bgottip/Desktop/template/webpack_orm/typescript-example/node_modules/typeorm/platform'
 @ ./node_modules/typeorm/platform/PlatformTools.js
 @ ./node_modules/typeorm/index.js
 @ ./src/index.ts

WARNING in ./node_modules/typeorm/driver/react-native/ReactNativeDriver.js
Module not found: Error: Can't resolve 'react-native-sqlite-storage' in '/Users/bgottip/Desktop/template/webpack_orm/typescript-example/node_modules/typeorm/driver/react-native'
 @ ./node_modules/typeorm/driver/react-native/ReactNativeDriver.js
 @ ./node_modules/typeorm/driver/DriverFactory.js
 @ ./node_modules/typeorm/connection/Connection.js
 @ ./node_modules/typeorm/index.js
 @ ./src/index.ts

WARNING in ./node_modules/typeorm/platform/PlatformTools.js
Module not found: Error: Can't resolve 'redis' in '/Users/bgottip/Desktop/template/webpack_orm/typescript-example/node_modules/typeorm/platform'
 @ ./node_modules/typeorm/platform/PlatformTools.js
 @ ./node_modules/typeorm/index.js
 @ ./src/index.ts

WARNING in ./node_modules/typeorm/platform/PlatformTools.js
Module not found: Error: Can't resolve 'sql.js' in '/Users/bgottip/Desktop/template/webpack_orm/typescript-example/node_modules/typeorm/platform'
 @ ./node_modules/typeorm/platform/PlatformTools.js
 @ ./node_modules/typeorm/index.js
 @ ./src/index.ts

WARNING in ./node_modules/typeorm/platform/PlatformTools.js
Module not found: Error: Can't resolve 'sqlite3' in '/Users/bgottip/Desktop/template/webpack_orm/typescript-example/node_modules/typeorm/platform'
 @ ./node_modules/typeorm/platform/PlatformTools.js
 @ ./node_modules/typeorm/index.js
 @ ./src/index.ts

[kzimny]

Yes, but that’s a while ago… I can not remember all the steps. I found that I need add externals configuration to the webpack.prod.js and webpack.dev.js as follow:

let mainConfig = {
    // use development mode also in webpack.prod.js because of typeorm library https://github.com/typeorm/typeorm/issues/958
    mode: 'development',
    entry: './crv/main/main.ts',
    target: 'electron-main',
    externals: {
        sqlite3: 'commonjs sqlite3',
        typeorm: 'commonjs typeorm'
    },
    output: {
        filename: 'main.bundle.js',
        path: __dirname + '../../../dist/crv'
    },
    node: {
        __dirname: false,
        __filename: false
    },
    resolve: {
        extensions: ['.js', '.json', '.ts']
    },
    module: { your own rules here...
    }
};

I hope this help you.

[Davidiusdadi]

I got the same error when my webpack.config.js (with node target) was not in my project root-directory but in a subfolder. The problem was with the configuration of the webpack-node-externals was not finding the node_modules:

I resolved the error by: changing this:

nodeExternals()

into this:

nodeExternals({
   modulesDir: path.resolve(__dirname, '../node_modules')
}),

Before applying this fix my webpack bundle was huge as it would bundle the node_modules - causing the warnings along the way…