Module: is

//trueconsole.log(_.eq(NaN,NaN))//falseconsole.log(_.eq(1,'1'))

//trueconsole.log(_.isArray([]))//falseconsole.log(_.isArray(document.body.children))

//trueconsole.log(_.isArrayLike('abc123'))//trueconsole.log(_.isArrayLike([]))//trueconsole.log(_.isArrayLike(document.body.children))

//trueconsole.log(_.isBlank('  '))//trueconsole.log(_.isBlank(null))//trueconsole.log(_.isBlank({}))//falseconsole.log(_.isBlank('     1'))

//trueconsole.log(_.isBoolean(false))//falseconsole.log(_.isBoolean('true'))//falseconsole.log(_.isBoolean(1))

//trueconsole.log(_.isDate(new Date()))//falseconsole.log(_.isDate('2020/1/1'))

//trueconsole.log(_.isDefined(null))//falseconsole.log(_.isDefined(undefined))

//trueconsole.log(_.isElement(document.body))//falseconsole.log(_.isElement(document))

//trueconsole.log(_.isEmpty(null))//trueconsole.log(_.isEmpty([]))//falseconsole.log(_.isEmpty({x:1}))

//falseconsole.log(_.isEqual(1,'1'))//true,falselet o = {a:1,b:[2,{c:['3','x']}]}let oo = {a:1,b:[2,{c:['3','x']}]}console.log(_.isEqual(o,oo),o == oo)//trueconsole.log(_.isEqual([new Date('2010-2-1'),/12/],[new Date(1264953600000),new RegExp('12')]))//falseconsole.log(_.isEqual([new Date('2010-2-1'),'abcd'],['2010/2/1','Abcd']))

//trueconsole.log(_.isEqualWith([new Date('2010-2-1'),'abcd'],['2010/2/1','Abcd'],(av,bv)=>_.isDate(av)?av.toLocaleDateString() == bv:_.test(av,bv,'i')))

//trueconsole.log(_.isError(new TypeError))//falseconsole.log(_.isError(Error))//truetry{a=b}catch(e){console.log(_.isError(e))}

//falseconsole.log(_.isFinite('0'))//trueconsole.log(_.isFinite(0))//trueconsole.log(_.isFinite(Number.MAX_VALUE))//trueconsole.log(_.isFinite(99999999999999999999999999999999999999999999999999999999999999999999999))//falseconsole.log(_.isFinite(Infinity))

//trueconsole.log(_.isFunction(new Function()))//trueconsole.log(_.isFunction(()=>{}))

//trueconsole.log(_.isInteger(-0))//trueconsole.log(_.isInteger(5.0))//falseconsole.log(_.isSafeInteger(5.000000000000001))//trueconsole.log(_.isSafeInteger(5.0000000000000001))//falseconsole.log(_.isInteger('5'))//trueconsole.log(_.isInteger(Number.MAX_SAFE_INTEGER))//trueconsole.log(_.isInteger(Number.MAX_VALUE))

//trueconsole.log(_.isMap(new Map()))//falseconsole.log(_.isMap(new WeakMap()))

let target = {a:{x:1,y:2},b:1}//trueconsole.log(_.isMatch(target,{b:1}))//trueconsole.log(_.isMatch(target,{a:{x:1}}))target = [{x:1,y:2},{b:1}]//trueconsole.log(_.isMatch(target,{1:{b:1}}))//trueconsole.log(_.isMatch(target,[{x:1}]))

let target = {a:{x:1,y:2},b:1}//trueconsole.log(_.isMatchWith(target,{b:1}))//falseconsole.log(_.isMatchWith(target,{b:'1'}))target = {a:null,b:0}//trueconsole.log(_.isMatchWith(target,{a:'',b:'0'},(a,b)=>_.isEmpty(a) && _.isEmpty(b)?true:a==b))

//trueconsole.log(_.isNaN(NaN))//falseconsole.log(_.isNaN(null))//falseconsole.log(_.isNaN(undefined))

//trueconsole.log(_.isNil(undefined))//falseconsole.log(_.isNil(0))//trueconsole.log(_.isNil(null))//falseconsole.log(_.isNil(NaN))

//trueconsole.log(_.isNull(null))//falseconsole.log(_.isNull(undefined))

//trueconsole.log(_.isNumber(1))//trueconsole.log(_.isNumber(Number.MAX_VALUE))//falseconsole.log(_.isNumber('1'))

//falseconsole.log(_.isObject(1))//trueconsole.log(_.isObject(new String()))//falseconsole.log(_.isObject(true))//falseconsole.log(_.isObject(null))

//falseconsole.log(_.isPlainObject(1))//falseconsole.log(_.isPlainObject(new String()))//trueconsole.log(_.isPlainObject({}))//falseconsole.log(_.isPlainObject(null))//trueconsole.log(_.isPlainObject(new Object))function Obj(){}//falseconsole.log(_.isPlainObject(new Obj))

//trueconsole.log(_.isRegExp(new RegExp))//trueconsole.log(_.isRegExp(/1/))

//trueconsole.log(_.isSafeInteger(-0))//trueconsole.log(_.isSafeInteger(5.0))//falseconsole.log(_.isSafeInteger(5.000000000000001))//trueconsole.log(_.isSafeInteger(5.0000000000000001))//falseconsole.log(_.isSafeInteger('5'))//trueconsole.log(_.isSafeInteger(Number.MAX_SAFE_INTEGER))//falseconsole.log(_.isSafeInteger(Number.MAX_VALUE))

//falseconsole.log(_.isSet(new WeakSet))//trueconsole.log(_.isSet(new Set))

//trueconsole.log(_.isString(new String('')))//trueconsole.log(_.isString(''))

//trueconsole.log(_.isSymbol(Symbol()))

//trueconsole.log(_.isUndefined(undefined))//falseconsole.log(_.isUndefined(null))

//trueconsole.log(_.isWeakMap(new WeakMap))//falseconsole.log(_.isWeakMap(new Map))

//trueconsole.log(_.isWeakSet(new WeakSet))//falseconsole.log(_.isWeakSet(new Set))