/*public boolean hasValue(JS key, JS value) {
int i = indexOf(key); return i >= 0 && entries[i + 1] != null; }
public boolean hasTrap(JS key, JS trap) {
/*public boolean hasValue(JS key, JS value) {
int i = indexOf(key); return i >= 0 && entries[i + 1] != null; }
public boolean hasTrap(JS key, JS trap) {