typescript 94 maybe 49 monad 44 option 44 javascript 39 functional 37 null 30 result 26 undefined 26 nullable 21 functional-programming 21 some 18 type 15 object 15 java 14 none 14 parameters 14 fp 13 function 13 arguments 12 chaining 12 require 11 utility 11 npm 11 dependencies 10 value 10 nodejs 10 promise 9 asynchronous 9 async 9 types 9 monads 9 required 9 safe 9 worker 9 typed 8 options 8 args 8 try 8 cloudflare 8 workers 8 serverless 8 router 8 cf 8 middleware 8 just 7 validation 7 callback 7 functor 7 either 7 js 7 scala 7 default 7 unwrap 7 rust 7 es6 7 error 7 fallback 6 nested 6 validate 6 node 6 property 6 nothing 6 util 6 package 6 array 6 cli 6 esm 6 dependency 6 api 6 params 6 cloudflare-workers 6 nullish 5 objects 5 generator 5 cjs 5 library 5 type-safety 5 optional chaining 5 or 5 optionals 5 proxy 5 parameter 5 query 5 filter 5 typescript-library 5 error-handling 5 umd 5 optional-js 5 ts 4 wrapper 4 routing 4 regex 4 module 4 handler 4 argument 4 string 4 partial 4 nullsafe 4 ok 4