NPM

Check for the validity of a CSS property name.

Detect if a string is a data URL

Check whether or not a directory and its descendants are valid

Check if a string is a valid filename

Validates namespaces and java package names against identifier rules

Check for the validity of a CSS media query.

Verify that file or package, be it remote, or local, is a valid ECMAScript Module

URI validation functions

Validate object properties in javascript.

Derives a JSON schema from an object and then uses it to validate other objects

GIT COMMIT-MSG hook for validating commit message.

Script to validate a commit message follows the conventional changelog standard

Validate the name of a custom element

Validate glob options

Give me a string and I'll tell you if it's a valid npm package license string

Give me a string and I'll tell you if it's a valid npm package name

Validate that the peerDependencies of a given package.json have been satisfied.

Tests if a sequence of floats is a robust non-overlapping increasing sequence

validate-value validates values against JSON schemas.

Validates if a value is an array.

Validates if a value is array-like.

Validates if a value is a boolean primitive.

Validates if a value is a Buffer object.

Validates if an array contains an input value.

Validates if a value is a function.

Validates if a value is infinite.

Validates if a value is an integer.

Validates if a value is an integer array.

Validates if a value is a number primitive and an integer.

Validates if a value is matrix-like.

Validates if a value is NaN.

Validates if a value is a NaN primitive.

Validates if a value is ndarray-like.

Validates if a value is negative zero.

Validates if a value is a nonnegative integer.

Validates if a value is a nonnegative integer array.

Validates if a value is a number.

Validates if a value is a number primitive, excluding NaN.

Validates if a value is a JavaScript object.

Validates if a value is a positive integer.

Validates if a value is a positive integer array.

Validates if a value is a string primitive.

Validates if a value is a typed array.

Validates if a value is undefined.

Declarative validations for JavaScript

Mimosa's configuration validator library

String validation and sanitization

Powerful object and string validation in Javascript.

Validation library inspired by Laravel's Validator

Check and validation library