null 164 object 80 javascript 60 array 53 typescript 49 string 41 type 40 check 40 boolean 36 number 33 is 33 empty 32 optional 26 defined 25 function 25 value 21 nodejs 19 util 18 validate 18 utility 17 typeof 17 property 17 validation 16 error 16 node 16 throw 14 option 13 utils 13 assert 13 json 12 maybe 12 symbol 12 safe 11 primitive 11 nullable 11 clean 11 void 11 test 11 deep 11 filter 11 properties 10 utilities 10 valid 10 date 10 NaN 9 js 9 monad 9 false 9 nil 9 plugin 9 react 8 nullish 8 nested 8 default 8 recursive 8 falsy 8 window 8 objects 8 isnull 8 not 8 truthy 7 get 7 guard 7 remove 7 functional 7 proxy 7 isundefined 7 es6 7 assertion 7 true 7 regexp 7 convert 7 arguments 7 exception 6 integer 6 nan 6 parse 6 functional-programming 6 result 6 compare 6 variable 6 isomorphic 6 getters 6 types 6 validator 6 class 5 javascript-library 5 validate.io 5 type-checking 5 recursively 5 verify 5 fp 5 chaining 5 module 5 variables 5 cleaner 5 stringify 5 set 5 lodash 5 keys 4