tsup.config.ts

import { defineConfig } from 'tsup'
import * as preset from 'tsup-preset-solid'
import pkg from './package.json'

const preset_options: preset.PresetOptions = {
  entries: [
    {
      entry: 'src/index.tsx',
      server_entry: true,
    }
  ],
  drop_console: true,
  cjs: true,
}

export default defineConfig(config => {
  const watching = !!config.watch
  const parsedOptions = preset.parsePresetOptions(preset_options, watching)

  if (!watching) {
    const package_fields = preset.generatePackageExports(parsedOptions)
    console.log(`\npackage.json: \n${JSON.stringify(package_fields, null, 2)}\n\n`)
    preset.writePackageJson(package_fields)
  }

  const tsupOptions = preset
    .generateTsupOptions(parsedOptions)
    .map((tsupOption) => ({
      ...tsupOption,
      name: pkg.name,
      dts: !tsupOption.dts ? undefined : {
        footer: `declare module '${pkg.name}'`,
      },
    }));

  return tsupOptions;
});