validation 7 typescript 7 error-handling 6 express 6 react 6 nodejs 6 form-validation 5 ui 5 material 5 bootstrap 5 stu3 5 dstu2 5 fhir 5 hl7 5 http-status 3 validator 3 api-error 3 validation-library 3 error-formatting 3 phone 3 address 3 form 3 utility 2 API 2 response-handler 2 rest-api 2 Reactive forms 2 Input 2 formarray 2 formgroup 2 formcontrol 2 Form Group 2 exception-handling 2 FormGroup 2 middleware 2 From Control 2 npm 2 npm-package 2 FromControl 2 Abstract Control 2 AbstractControl 2 response 2 handler 2 Angular 2 Angular 2 2 Angular2 2 Angular 17 2 angular 2 angular 2 2 angular2 2 angular 17 2 angular advanced validators 2 database-errors 2 Forms 2 Form 2 forms 2 Validation 2 Validator 2 api-helper 2 response-json 2 custom-error 2 error-codes 2 response-format 2 bad-request 2 not-found 2 conflict 2 forbidden 2 unauthorized 2 server-error 2 rate-limit 2 response-utility 2 status-code 2 http-response 2 success-response 2 api-response 2 error-messages 2 error-handler 2 api 2 formatter 2 error 2 validate 2 primeng 2 input 2 control 2 email 2 dynamic template driven form validation 2 dynamic reactive form validation 2 Reactive 2 Cross field validation 2 Cross field validators 2 cross field validation 2 cross field validators 2 PrimeNG 2 RegExp 2 dynamic form validation 2 conditional form validation 2 pattern based validation 2 template driven 2 regex 2 regexp 2