swc minify.ts

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  import type { Plugin } from "rollup";
import { getSwc } from "./loadSwc";
 
type MinifyOptions = {
  compress?: boolean;
  mangle?: boolean;
};
 
export function minify(input: MinifyOptions = {}): Plugin {
  const defaults: MinifyOptions = {
    compress: true,
    mangle: true,
  };
 
  const options = Object.assign(
    {
      ...defaults,
    },
    input,
  );
  return {
    name: "swc-minify",
 
    async renderChunk(
      contents,
      _,
      { format, sourcemap, sourcemapExcludeSources },
    ) {
      const { minify: minifySwc } = await getSwc();
      const { code, map } = await minifySwc(contents, {
        ...options,
        module: format === "es",
        sourceMap: !!sourcemap,
        inlineSourcesContent: !sourcemapExcludeSources,
      });
 
      return { code, map: map || null };
    },
  };
}