REPL – Try Vielzeug Online
Test all Vielzeug utilities in your browser without installation. This interactive playground includes all functions from the toolkit with full TypeScript support and instant results.
Lightweight, type-safe web components with reactive state and automatic rendering.
Type-safe local storage with schemas, expiration, and query building.
Advanced HTTP client with caching, retries, and deduplication.
Type-safe form state and validation for React and beyond.
Internationalization library with TypeScript support.
Beautiful console logging with styling and remote logging support.
Role-based access control (RBAC) system for permissions.
Client-side routing library with nested routes and middleware support.
State management with reactive subscriptions.
Utility library with functions for arrays, objects, and more.
Type-safe schema validation with advanced error handling.
Lightweight dependency injection container with IoC principles.
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Press Run or Cmd+Enter to see results hereAvailable Functions
Array (25 functions)
aggregatealternatearrangechunkcompactcontainseveryfilterfindfindIndexfindLastflattengrouplistmappickreduceremoteListsearchselectshiftsomesortsubstituteuniqObject (10 functions)
cacheclonediffentrieskeysmergeparseJSONpathseekvaluesString (6 functions)
camelCasekebabCasepascalCasesimilaritysnakeCasetruncateMath (17 functions)
absaddallocateaverageboilclampdistributedividemaxmedianminmultiplyrangerateroundsubtractsumDate (3 functions)
expiresintervaltimeDiffMoney (2 functions)
currencyexchangeFunction (17 functions)
assertassertParamsattemptcomparecompareBycomposecurrydebouncedelayfpmemooncepipeproxyprunethrottleworkerAsync (10 functions)
deferdelayparallelpoolpredictqueueraceretrysleepwaitForTyped (27 functions)
gegtisisArrayisBooleanisDateisDefinedisEmptyisEqualisEvenisFunctionisMatchisNegativeisNilisNumberisObjectisOddisPositiveisPrimitiveisPromiseisRegexisStringisWithinisZerolelttypeOfRandom (4 functions)
drawrandomshuffleuuid