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285 packages found
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Function argument validation for humans
- type
- types
- check
- checking
- guard
- guards
- assert
- assertion
- predicate
- predicates
- is
- validate
- validation
- utility
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Type check values
A simple TypeScript library providing type guards for the primitive types in JavaScript.
- type
- types
- type-check
- type-checks
- type-checking
- predicate
- predicates
- type-predicate
- type-predicates
- type-assert
- type-asserting
- type-assertion
- type-assertions
- type-guard
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A vanilla JavaScript library for checking the type of variables in a more robust and accurate way than the typeof operator
- vanilla javascript
- types
- type
- type checking
- type checking library
- type checking module
- true type checking
- typeof
- typeof library
- typeof module
- typeof checking
- typeOf
- isString
- isNumber
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type-check allows you to check the types of JavaScript values at runtime with a Haskell like type syntax.
A little library for asserting types and values, with zero dependencies.
- type
- types
- type-check
- type-checking
- duck-typing
- arguments
- parameters
- values
- data
- contract
- assert
- check
- verify
- safe
A set of types, type checks, and type guards for simpler, safer, and easier to read code.
Type checking utils.
A type checking library where each exported function returns either true or false and does not throw. Also added tests.
A standard set of errors and methods for simpler, safer, and easier to read code.
Type predicate functions for checking if a value is of a specific type or asserting that it is.
Isomorphic, functional type-checking for Javascript
check if something is a POJO (plain old javascript object)
The definitive collection of is* functions for runtime type checking. Lodash-compatible, tree-shakable, with types.
Javascript checking library
Type checking and DDD for JavaScript
List of all javascript types. Used and useful for checking, validation, sanitizing and testing. Like isStream, isPromise, isWeakset and etc.
- bool
- boolean
- buffer
- check
- checking
- error
- is
- is-boolean
- is-buffer
- is-error
- is-promise
- is-stream
- json
- kind
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