basant307/AI_Governance_Project

1/*global HTMLElement DocumentTouch */2 3import window from './window.mjs';4 5let navigator = window ? window.navigator : null;6let document = window ? window.document : null;7 8let typeofstr = typeof '';9let typeofobj = typeof {};10let typeoffn = typeof function(){};11let typeofhtmlele = typeof HTMLElement;12 13let instanceStr = function( obj ){14  return obj && obj.instanceString && fn( obj.instanceString ) ? obj.instanceString() : null;15};16 17export const defined = obj =>18  obj != null; // not undefined or null19 20export const string = obj =>21  obj != null && typeof obj == typeofstr;22 23export const fn = obj =>24  obj != null && typeof obj === typeoffn;25 26export const array = obj =>27  !(elementOrCollection(obj)) && (Array.isArray ? Array.isArray( obj ) : obj != null && obj instanceof Array);28 29export const plainObject = obj =>30  obj != null && typeof obj === typeofobj && !array( obj ) && obj.constructor === Object;31 32export const object = obj =>33  obj != null && typeof obj === typeofobj;34 35export const number = obj =>36  obj != null && typeof obj === typeof 1 && !isNaN( obj );37 38export const integer = obj =>39  number( obj ) && Math.floor( obj ) === obj;40 41export const bool = obj =>42  obj != null && typeof obj === typeof true;43 44export const htmlElement = obj => {45  if( 'undefined' === typeofhtmlele ){46    return undefined;47  } else {48    return null != obj && obj instanceof HTMLElement;49  }50};51 52export const elementOrCollection = obj =>53  element( obj ) || collection( obj );54 55export const element = obj =>56  instanceStr( obj ) === 'collection' && obj._private.single;57 58export const collection = obj =>59  instanceStr( obj ) === 'collection' && !obj._private.single;60 61export const core = obj =>62  instanceStr( obj ) === 'core';63 64export const style = obj =>65  instanceStr( obj ) === 'style';66 67export const stylesheet = obj =>68  instanceStr( obj ) === 'stylesheet';69 70export const event = obj =>71  instanceStr( obj ) === 'event';72 73export const thread = obj =>74  instanceStr( obj ) === 'thread';75 76export const fabric = obj =>77  instanceStr( obj ) === 'fabric';78 79export const emptyString = obj => {80  if( obj === undefined || obj === null ){ // null is empty81    return true;82  } else if( obj === '' || obj.match( /^\s+$/ ) ){83    return true; // empty string is empty84  }85 86  return false; // otherwise, we don't know what we've got87};88 89export const nonemptyString = obj => {90  if( obj && string( obj ) && obj !== '' && !obj.match( /^\s+$/ ) ){91    return true;92  }93 94  return false;95};96 97export const domElement = obj => {98  if( typeof HTMLElement === 'undefined' ){99    return false; // we're not in a browser so it doesn't matter100  } else {101    return obj instanceof HTMLElement;102  }103};104 105export const boundingBox = obj =>106  plainObject( obj ) &&107    number( obj.x1 ) && number( obj.x2 ) &&108    number( obj.y1 ) && number( obj.y2 )109  ;110 111export const promise = obj =>112  object( obj ) && fn( obj.then );113 114export const touch = () =>115  window && ( ('ontouchstart' in window) || window.DocumentTouch && document instanceof DocumentTouch );116 117export const gecko = () =>118  window && ( typeof InstallTrigger !== 'undefined' || ('MozAppearance' in document.documentElement.style) );119 120export const webkit = () =>121  window && ( typeof webkitURL !== 'undefined' || ('WebkitAppearance' in document.documentElement.style) );122 123export const chromium = () =>124  window && ( typeof chrome !== 'undefined' );125 126export const khtml = () =>127  navigator && navigator.vendor.match( /kde/i ); // probably a better way to detect this...128 129export const khtmlEtc = () =>130  khtml() || webkit() || chromium();131 132export const ms = () =>133  navigator && navigator.userAgent.match( /msie|trident|edge/i ); // probably a better way to detect this...134 135export const windows = () =>136  navigator && navigator.appVersion.match( /Win/i );137 138export const mac = () =>139  navigator && navigator.appVersion.match( /Mac/i );140 141export const linux = () =>142  navigator && navigator.appVersion.match( /Linux/i );143 144export const unix = () =>145  navigator && navigator.appVersion.match( /X11/i );146