Alet a = [1,2,3];
a.toString = a.shift;
if( a == 1 && a == 2 && a == 3 ) {
console.log(1);
}
Blet a = {[Symbol.toPrimitive]: ((i) => () => ++i) (0)};
if(a == 1 && a == 2 && a == 3) {
console.log('1');
}
Clet a = {
i: 1,
valueOf () {
return a.i++
}
}
if(a == 1 && a == 2 && a == 3) {
console.log('1');
}
Dlet a = {
gn: (function* () {
yield 1;
yield 2;
yield 3;
})(),
valueOf() {
return this.gn.value;
}
};
if( a == 1 && a == 2 && a == 3 ) {
console.log(1);
}