Serverless Framework project fails to deploy because of archive size

Bug description

Generated bundle of the Serverless project has too big size and exceeds allowed by AWS Lambda 250 MB. It happens because of big sizes of downloaded @prisma/client, which, for some reasons, downloads engines folder that has unzipped size of 96 MB. And the other big files are connected to generated using command prisma generate schema.

Dependency versions

@prisma/client: “^2.20.0” prisma (dev) : “^2.20.1” serverless (dev): “^2.32.1” serverless-webpack: “^5.4.0” webpack: “^5.11.0” @types/webpack: “^4.41.25”

Webpack config

import nodeExternals from 'webpack-node-externals';
import slsw from 'serverless-webpack';
import { TsconfigPathsPlugin } from 'tsconfig-paths-webpack-plugin';
import CopyPlugin from 'copy-webpack-plugin';

const isOffline = !!slsw.lib.webpack.isLocal;

if (isOffline) {
    // eslint-disable-next-line no-console
    console.log('Offline mode detected!');
}

// Add plugins for the offline mode here
const offlinePlugins: NonNullable<Configuration['plugins']> = [];

const config: Configuration = {
    target: 'node',
    entry: slsw.lib.entries,
    externals: [nodeExternals()],
    mode: isOffline ? 'development' : 'production',
    devtool: 'source-map',
    module: {
        rules: [
            {
                test: /\.ts$/,
                use: [
                    'source-map-loader',
                    {
                        loader: 'ts-loader',
                        options: {
                            onlyCompileBundledFiles: true,
                        },
                    },
                ],
            },
            {
                test: /\.graphql$/,
                use: ['raw-loader'],
            },
        ],
    },
    plugins: [
        ...(isOffline ? offlinePlugins : []),
        new CopyPlugin({
            patterns: [
                { from: './src/database/prisma/schema.prisma', to: './schema.prisma' },
            ],
        })],
    resolve: {
        plugins: [
            new TsconfigPathsPlugin(),
        ],
        extensions: ['.ts', '.js'],
    },
    optimization: {
        minimize: !isOffline,
    },
    stats: 'minimal',
};

export = config;

Serverless webpack options

    webpackConfig: webpack.config.ts
    includeModules: true
    packager: npm
    packagerOptions:
      scripts:
        - prisma generate

Environment

& setup

• OS: Mac OS Big Sur 11.1
• Database: PostgreSQL
• Node.js version: 12
• Prisma version: 2.20.1

Background

This is on the first deploy of Prisma to our existing Lambda stack. We have not been able to get Lambda working yet. We bundle our functions through webpack before deploying.

I have looked at the webpack bundle and confirm that @prisma/client is being bundled with the lambda function before deploying.

[jsw]

@janpio I created a minimum repro at https://github.com/jsw/prisma-issue-6644

Also, I fixed part of the issue by moving the packages.patterns from function scope to file scope, though both are supposed to work if I’m correctly following the serverless docs. Take a look at my serverless.yml. And @prisma/engines and prisma are still included unless your workaround above is applied.

[janpio]

Quick update: I can confirm that we upload both binaries, the native and the rhel one, in standard Serverless Framework projects. No Webpack required even. If your own application code is big, this can of course lead to upload (50MB limit) or unpack (150MB limit) problems. I’ll look for a solution and let you know again.