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206 packages found
Fluent type verification for JavaScript
A simple type checking library for Node.js
A set of types, type checks, and type guards for simpler, safer, and easier to read code.
A small library for checking types
A parameter management utility.
A simple, convenient way to represent domain objects, leverage domain knowledge, and add runtime validation in your code base.
Utilities to get and check variable types (isString, isPlainObject, isRegExp, etc)
- array
- assert
- assertion
- async
- async function
- async-function
- asyncFunction
- bool
- boolean
- browser
- check
- check-type
- checking
- class
- View more
allows easy type enforcement for all JS types objects and classes. it is also extensible and provides simple to use type checks for your own custom classes and types
robust type checking for js
Type checking for JSON values
Get the type of a variable or one unevaluated operand
Basic persistence capabilities for the data object.
A simple function to check if a piece of data is truthy. JavaScript version.
- true
- false
- truthy
- falsy
- javascript
- validation
- checking
- data validation
- object validation
- array validation
- set validation
- map validation
Modern, reliable, full featured, type checking helpers
ko-typed provides observable extensions for restricting and converting observable values based on type
Runtime type-checking for JavaScript.
dirty checking for javascipt like expressions
Function argument validation for humans
- type
- types
- check
- checking
- guard
- guards
- assert
- assertion
- predicate
- predicates
- is
- validate
- validation
- utility
- View more
simple express-validator wrapper for easier work with validation error handling
Regular expression matching for email addresses. Maintained, configurable, more accurate, and browser-friendly alternative to email-regex. Works in Node v14+ and browsers. Made for Spam Scanner and Forward Email.