why can't the key of putValue be an empty string?

[refanbanzhang]

await promisifiedRegedit.putValue({
  [`HKCR\\CLSID\\{b65db688-9b12-4a08-b397-b92e6eec8a99}\\DefaultIcon`]: {
    "": {
      value: 'value',
      type: 'REG_EXPAND_SZ',
    },
  }
});
// Error: expected to have groups of 4 arguments for each value that is written to the registry

[xayanide]

I would like to add that the same error occurs when attempting to set a REG_DEFAULT type value with an empty data or value.

import regedit from "regedit";
const promisifiedRegedit = regedit.promisified;

await promisifiedRegedit.createKey("HKCU\\Software\\MyKeyThatExists");

const UNSET_REGSZ_VALUE = { value: "", type: "REG_SZ" };
const valuesToSet1 = {
    "HKCU\\Software\\MyKeyThatExists": {
        VALUE_NAME: UNSET_REGSZ_VALUE,
    },
};

// Success
await promisifiedRegedit.putValue(valuesToSet1);
console.log("valuesToSet1: Success");

// value a.k.a data = "" (Empty)
const UNSET_DEFAULT_VALUE = { value: "", type: "REG_DEFAULT" };
const valuesToSet2 = {
    "HKCU\\Software\\MyKeyThatExists": {
        VALUE_NAME: UNSET_DEFAULT_VALUE,
    },
};

// Fails
await promisifiedRegedit.putValue(valuesToSet2);
console.log("valuesToSet2 : Success");

/**
node ./test/put.js
\regedit\errors.js:11
errors[25123] = new Error('expected to have groups of 4 arguments for each value that is written to the registry')
                ^
Error: expected to have groups of 4 arguments for each value that is written to the registry 
*/