typescript 164 validation 116 javascript 113 types 78 type 73 check 54 type-check 50 schema 41 nodejs 38 type-checker 35 type-safety 33 utility 32 validator 27 is 25 runtime-validation 23 typeof 21 assert 21 utilities 21 validate 21 cli 21 runtime 20 object 20 checking 20 node 20 data-validation 20 react 19 data-type 19 input-validation 19 static-analysis 18 schema-validation 17 assertion 16 mcp 16 developer-tools 16 config 15 string 15 not 15 type-safe 15 browser 14 type-validation 14 error 14 array 13 predicates 13 verify 13 compiler 13 tsconfig 13 typechecker 12 express 12 safe 12 safety 12 npm-package 12 utils 12 library 12 data 11 zod 11 number 11 check-type 11 guards 11 model-context-protocol 11 js 11 eslint 10 helpers 10 lightweight 10 is-string 10 nextjs 10 ai 10 type-guards 10 is-object 10 testing 10 message 10 backend 10 configuration 10 json-schema 10 util 10 form-validation 10 predicate 10 lint 9 get-type 9 tsc 9 parameters 9 type-guard 9 validation-library 9 npm 9 error-handling 9 javascript-library 9 developer-experience 9 functional-programming 9 code-quality 9 promise-saga 9 effects 9 side effects 9 guard 9 performance 9 zero-dependencies 9 contract 9 arguments 9 assertions 8 claude 8 monorepo 8 utility-functions 8 what-type 8