[!] Error: While loading the Rollup configuration from "rollup.config.ts", Node tried to require an ES module from a CommonJS 
file, which is not supported. A common cause is if there is a package.json file with "type": "module" in the same folder. You can 
try to fix this by changing the extension of your configuration file to ".cjs" or ".mjs" depending on the content, which will prevent 
Rollup from trying to preprocess the file but rather hand it to Node directly.
https://rollupjs.org/guide/en/#using-untranspiled-config-files
    at Object.error (D:\Work\js\rollup-config-problem\node_modules\rollup\dist\shared\rollup.js:198:30)     
    at loadConfigFromBundledFile (D:\Work\js\rollup-config-problem\node_modules\rollup\dist\shared\loadConfigFile.js:637:27)
    at getDefaultFromTranspiledConfigFile (D:\Work\js\rollup-config-problem\node_modules\rollup\dist\shared\loadConfigFile.js:613:12)
    at loadConfigFile (D:\Work\js\rollup-config-problem\node_modules\rollup\dist\shared\loadConfigFile.js:572:11)
    at Object.loadAndParseConfigFile (D:\Work\js\rollup-config-problem\node_modules\rollup\dist\shared\loadConfigFile.js:552:21)
    at getConfigs (D:\Work\js\rollup-config-problem\node_modules\rollup\dist\bin\rollup:1691:39)
    at runRollup (D:\Work\js\rollup-config-problem\node_modules\rollup\dist\bin\rollup:1665:43)