[Nexus]

function removeVowelKeys(object) {
    const isVowel = char => ['a', 'e', 'i', 'o', 'u', 'y'].includes(char.toLowerCase());

    const result = {...object};

    Object.getOwnPropertyNames(object).forEach(propertyName => {
        const firstChar = propertyName.charAt(0);
        if (isVowel(firstChar)) {
            delete result[propertyName];
        }
    });

    return result;
}

alert(JSON.stringify(removeVowelKeys({
    alarm: 'This is SPARTA!!!',
    chip: 100,
    isValid: false,
    Advice: 'Learn it hard',
    onClick: 'make it great again',
})));