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551 packages found
Prune boolean JSON expressions
Check if a string is a datetime string.
Check if `this` is truthy.
Ask for a type, returns a true/false as answer.
Fallback when a value is not Boolean.
A robust micro library for type checking. Defers to constructs' internal `[[Class]]` property rather than duck typing for excellent type detection and to avoid triggering false positives.
This module is small but easy to use. The purpose of this module is to check if a target value does not equals a source value, it can optionally also do none case sensitive comparing.
Boolean logical and Bitwise "Implies" operators
Flow control for indeterminate booleans as plain JS objects
Church encoding utility library for JavaScript
React hook providing functions for boolean state handling
String-based boolean expression evaluator
checks if value exists in array or string returning boolean
Output a boolean with color. Pretty sweet for your terminal logs!
Wait for a condition to be true
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
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Takes any JavaScript data type or object as an input and returns a string describing the type of the input.
a versatile, headless query builder for react
- n-conditional
- unconditional
- love
- query builder
- expression builder
- condition builder
- filter
- boolean
- logic
- rules
- headless
RapidOM schema validator
- rapid
- object
- model
- rapidom
- javascript
- typescript
- schema
- validation
- default
- required
- array
- min
- max
- length
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