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6000 packages found
A versatile toolkit of utility functions and validators for simplifying data validation and common tasks in JavaScript applications.
- validator
- validation
- validate
- sanitise
- assert
- util
- utility
- helper functions
- util functions
- data validation
- input validation
- data sanitization
- form validation
- JavaScript utilities
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Type predicate functions for checking if a value is of a specific type or asserting that it is.
Validate, sanitize and assert: the silver bullet of data!
Nanoscale assertion module
Test if a value is a string.
typesafe assertion library for TypeScript 3.7+
Test if a double-precision floating-point numeric value is NaN.
- stdlib
- stdmath
- assertion
- assert
- utilities
- utility
- utils
- util
- math
- mathematics
- ieee754
- floating-point
- float
- number
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This [vite](https://vitejs.dev/) plugin generates a single SVG spritemap containing multiple <symbol> elements from all `.svg` files in a directory.
- censor
- format
- Float64Array
- fast-deep-copy
- tools
- Uint8Array
- command
- framework
- look-up
- name
- https
- duplex
- ECMAScript 2022
- status
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Checks TypeScript types match expected values
Count the number of assertions for node:test
Node.js test runner that lets you develop with confidence.
the live, love, laugh of unit tests
Test if a value is a regular expression string.
- stdlib
- stdassert
- assertion
- assert
- utils
- util
- utilities
- utility
- isregexp
- regular expression
- regexp
- regex
- regular
- expression
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Type checking utils.
A library for writing uncluttered, easy to read field and schema validations.
A very small package for use in internally verifying the flow and logic of scripts.
Test if a double-precision floating-point numeric value is infinite.
- stdlib
- stdmath
- assertion
- assert
- utilities
- utility
- utils
- util
- math
- mathematics
- ieee754
- floating-point
- float
- double
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utility function to assert and narrow a type using typebox
Test if an object has a specified property.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- object
- obj
- has
- hasown
- hasownproperty
- property
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