rollup.config.js

import commonjs from "@rollup/plugin-commonjs"
import resolve from "@rollup/plugin-node-resolve"
import sucrase from "@rollup/plugin-sucrase"
import { terser } from "rollup-plugin-terser"

import pkg from "./package.json"

const name = pkg.name
  .replace(/^(@\S+\/)?(svelte-)?(\S+)/, "$3")
  .replace(/^\w/, (m) => m.toUpperCase())
  .replace(/-\w/g, (m) => m[1].toUpperCase())

const config = () => ({
  input: "src/index.ts",
  output: [
    { file: pkg.module, format: "es", name },
    { file: pkg.main, format: "umd", name },
  ],
  plugins: [
    sucrase({
      exclude: ["dist/*"],
      include: ["src/*"],
      transforms: ["typescript"],
    }),
    commonjs({}),
    resolve({
      extensions: [".mjs", ".js", ".json", ".node", ".ts"],
    }),
    terser(),
  ],
})

export default config()