SWC Minify Configuration for drop_console

[fabb]

Goals

1. Make drop_console configurable, so we can strip client logs, but keep server logs

Non-Goals

No response

Background

With terser, we could configure terser options by wrapping the webpack config in next.config.js:

        if (!dev) {
            if (config.optimization && config.optimization.minimizer) {
                for (const plugin of config.optimization.minimizer) {
                    if (plugin.constructor.name === 'TerserPlugin') {
                        plugin.options.sourceMap = true
                        plugin.options.terserOptions = {
                            ...plugin.options.terserOptions,
                            warnings: false,
                            compress: {
                                ...plugin.options.terserOptions.compress,
                                drop_console: !isServer,
                            },
                        }
                        break
                    }
                }
            }
        }

Proposal

Add a configuration option compiler.swc where we can supply options that depend on client/server build and dev/prod.