Reproduction link or steps

• Set up a project with tsup, for example a starter of turborepo which has a packages/ui using tsup: npx create-turbo@latest -e design-system
• cd and run npx tsdown migrate
• error: @acme/ui:dev: ERROR Error: No input files, try "tsdown <your-file>" or create src/index.ts

which is solved on updating entryPoints to entry, as per the docs: https://tsdown.dev/options/entry#multiple-entry-files

What is expected?

expecting config to look like this:

import { defineConfig } from "tsdown";

export default defineConfig((options) => ({
  entry: ["src/button.tsx"],
  format: ["cjs", "esm"],
  dts: true,
  external: ["react"],
  ...options,
}));

What is actually happening?

config file actually looks like:

import { defineConfig } from "tsdown";

export default defineConfig((options) => ({
  entryPoints: ["src/button.tsx"],
  format: ["cjs", "esm"],
  dts: true,
  external: ["react"],
  ...options,
}));

Any additional comments?

Furthermore, entryPoints is not showing as an error in Options.