namecache and parallel to be used together

If you want namecache and parallel to be used together and you don't want to package twice after each change, you can only make namecache a concurrenthashmap.

rollup-plugin-terser/rollup-plugin-terser.js

Line 56 in 6b50b7f

if (result.nameCache) {

rollup-plugin-terser/transform.js

Line 5 in 6b50b7f

    
           return minify(code, options).then(result => ({ result, nameCache: options.nameCache }));