@easyappkit/utils

Common utilities and React hooks for Easy App Kit.

Installation

npm install @easyappkit/utils

Usage

Validation

import { isEmail, isStrongPassword, isEmpty } from '@easyappkit/utils';

isEmail('[email protected]'); // true
isStrongPassword('Abc12345'); // true
isEmpty(''); // true

Formatting

import { formatDate, formatCurrency, formatFileSize, truncate } from '@easyappkit/utils';

formatDate(new Date(), 'long'); // "December 5, 2025"
formatCurrency(1234.56); // "$1,234.56"
formatFileSize(1024000); // "1000 KB"
truncate('Long text here', 10); // "Long text..."

React Hooks

import { useDebounce, useThrottle, useToggle, usePrevious } from '@easyappkit/utils';

// Debounce
function SearchInput() {
  const [value, setValue] = useState('');
  const debouncedValue = useDebounce(value, 500);
  
  useEffect(() => {
    // API call with debouncedValue
  }, [debouncedValue]);
}

// Throttle
function ScrollHandler() {
  const handleScroll = useThrottle(() => {
    console.log('Scrolling...');
  }, 1000);
  
  return <ScrollView onScroll={handleScroll} />;
}

// Toggle
function ToggleExample() {
  const [isOpen, toggle, setIsOpen] = useToggle(false);
  
  return <Button onPress={toggle}>Toggle</Button>;
}

// Previous value
function Counter() {
  const [count, setCount] = useState(0);
  const prevCount = usePrevious(count);
  
  return <Text>Current: {count}, Previous: {prevCount}</Text>;
}

Helpers

import { sleep, randomId, chunk, unique, groupBy } from '@easyappkit/utils';

await sleep(1000); // Wait 1 second
const id = randomId(); // Generate random ID

const chunks = chunk([1,2,3,4,5], 2); // [[1,2], [3,4], [5]]
const uniqueItems = unique([1,2,2,3]); // [1,2,3]

const grouped = groupBy(
  [{ type: 'a', val: 1 }, { type: 'b', val: 2 }],
  'type'
); // { a: [...], b: [...] }

License

MIT