This commit breaks the library: 08dac8f#diff-8ce065eecc2fb15bf911535d1b27f523b3768918cb9a3d98e6cbb1e83c2ffab9R270-R275

Starting from that, we are constantly getting errors like this one in tests and runtime

 TypeError: Object prototype may only be an Object or null: undefined at setPrototypeOf (<anonymous>) 

I'm trying to contribute to the repository with a fix, but it's impossible to contribute to this repository without a proper documentation. Trying to install dependencies with npm i, but error with node version greater than 8.
Unable to build with npm run build.

Changing a piece of code of components/base/src/component-base.ts from this

 if (((/[s]\b/).test(tagRef) && innerDirValues) && (!(/[s]\b/).test(tagName) || innerDirValues.length)) { items[tagName] = tempObj; } else if (tempObj && Object.keys(tempObj).length !== 0) { items[tagName].push(tempObj); }

to this

 if (((/[s]\b/).test(tagRef) && innerDirValues) && (!(/[s]\b/).test(tagName) || innerDirValues.length)) { items[tagName] = tempObj; } else { items[tagName].push(tempObj); }

(basically changing it like this)

 if (((/[s]\b/).test(tagRef) && innerDirValues) && (!(/[s]\b/).test(tagName) || innerDirValues.length)) { items[tagName] = tempObj; - } - else if (tempObj && Object.keys(tempObj).length !== 0) { + } else { items[tagName].push(tempObj); }

Should work