Error while loading config - You appear to be using a native ECMAScript module configuration file (Jest)
SOLVED: For anyone who encounters this problem. This has got to do with Babel settings. The use of .mjs, cjs or js extension for the babel.config.extension. In my case where I was running LTE Node 12.6.2. I needed this configuration at the root of my directory babel.config.cjs. cjs is what is applicable for Nodejs when using "type"="module". See more about it here on babel docs.
module.exports = { presets: [ [ '@babel/preset-env', { targets: { node: 'current' } } ] ]};And jest.config.cjs at the root too.