fp/packages/mailbox/tsup.config.js

import { defineConfig } from "tsup"
import { exec } from 'node:child_process'

export default defineConfig({
    entry: [
        "src/index.ts",
        "src/tasks/**.ts"
    ],
    /**
     * lots of compatibility issues outputting to ESM. So we output to CJS to get things working.
     */
    format: ["cjs"],
    target: "es2022",
    sourcemap: true,
    /**
     * The common package is using the internal packages approach, so it needs to
     * be transpiled / bundled together with the deployed code.
     */
    noExternal: [
        "@futureporn/image",
        "@futureporn/utils",
        "@futureporn/scout",
        "@futureporn/storage",
        "@futureporn/types",
    ],
    /**
     * Do not use tsup for generating d.ts files because it can not generate type
     * the definition maps required for go-to-definition to work in our IDE. We
     * use tsc for that.
     */
    splitting: false,
    treeshake: true,
    clean: true,
    outDir: 'dist', // Where you want your compiled files to live
    shims: true,
    onSuccess: async () => {
      exec('tsc --emitDeclarationOnly');
    }
});