michael-lynch

// react
import { useCallback, useEffect, useRef } from 'react';

// props
export interface UseIdleProps {
	events?: string[];
	onIdle: () => void;
	onPrompt?: () => void;
	promptTimeout?: number;
	timeout: number;

michael-lynch

// react
import { useCallback, useEffect, useRef, useState } from 'react';

// props
export interface UseFetchParams {
	isEnabled?: boolean;
	isLazy?: boolean;
	onComplete?: () => void;
	// eslint-disable-next-line @typescript-eslint/no-explicit-any
	onError?: (error: any) => void;

michael-lynch

export const isDate = date => {
  const dateTest = new Date(date);
  return (
    dateTest && Object.prototype.toString.call(dateTest) === '[object Date]' && !isNaN(dateTest)
  );
};

export const isNumber = value => {
  return typeof value === 'number' && !Number.isNaN(value);
};

michael-lynch

export const merge = (current, updates) => {
  for (const key of Object.keys(updates)) {
    if (!current.hasOwnProperty(key) || typeof updates[key] !== 'object') {
      current[key] = updates[key];
    } else {
      merge(current[key], updates[key]);
    }
  }
  return current;
};

michael-lynch

export const capitalize = sentence => {
  const words = sentence.split(' ');
  for (let i = 0; i < words.length; i++) {
    if (words[i]) {
      words[i] = words[i][0].toUpperCase() + words[i].substr(1).toLowerCase();
    }
  }
  return words.join(' ');
};

michael-lynch

export const toCamelCase = string => {
  if (!string) {
    return '';
  }

  let newString = string.toLowerCase();

  newString = newString.replace(/ /g, '_').toLowerCase();
  newString = newString.replace(/_([a-z])/g, g => {
    return g[1].toUpperCase();

michael-lynch

// https://stackoverflow.com/a/24103596/2262604
export const setCookie = ({ days, domain, expires, name, path, value }) => {
  let cookie = `${name}=${value}`;

  if (expires) {
    // set expires
    cookie += `; expires=${expires}`;
  } else if (days) {
    // create date
    const date = new Date();

michael-lynch

// https://www.w3resource.com/javascript-exercises/fundamental/javascript-fundamental-exercise-123.php
export const toKebabCase = string => {
  if (!string) {
    return '';
  }

  const newString = string
    .match(/[A-Z]{2,}(?=[A-Z][a-z]+[0-9]*|\b)|[A-Z]?[a-z]+[0-9]*|[A-Z]|[0-9]+/g)
    .map(x => x.toLowerCase())
    .join('-');

michael-lynch

// https://stackoverflow.com/a/31536517/2262604
export const jsonToCsv = json => {
  const replacer = (key, value) => (value === null ? '' : value);
  const header = Object.keys(json[0]);
  const csv = [
    header.join(','),
    ...json.map(row => header.map(fieldName => JSON.stringify(row[fieldName], replacer)).join(',')),
  ].join('\r\n');
  return csv;
};

michael-lynch

// https://stackoverflow.com/a/68146412/2262604
export const downloadBlob = ({ content, filename, contentType }) => {
  // create blob
  const blob = new Blob([content], {
    type: contentType || 'text/csv;charset=utf-8;',
  });
  const url = URL.createObjectURL(blob);

  // create link to download it
  const anchor = document.createElement('a');