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232 packages found
Test whether all elements in a collection fail a test implemented by a predicate function.
Predicate that returns true if base64 string.
Waits for a given predicate callback to return a truthy value and resolves
Utilities to apply boolean logic (not, and, or) to functions and higher-order functions. Tiny, tested and composable
- not
- and
- or
- logical not
- logical and
- logical or
- invert function
- invert logic
- flip logic
- boolean
- predicate
- predicates
- boolean predicate
- boolean predicates
- View more
Type checking utils.
Function argument validation for humans
- type
- types
- check
- checking
- guard
- guards
- assert
- assertion
- predicate
- predicates
- is
- validate
- validation
- utility
- View more
Build, validate, and transform values with immutable typed schemas.
TypeScript predicates library
Define logical conditions to test an input value.
Predicate negation. Suitable for RxJS, Array.filter and others.
Set of various predicates for type checking, assertions, filtering etc
Exactly computes the orientation of a tuple of points
Composable [type predicates](https://www.typescriptlang.org/docs/handbook/2/narrowing.html#using-type-predicates) for runtime type checking.
Type predicate functions for checking if a value is of a specific type or asserting that it is.
Forked from ivarprudnikov/rjsf-conditionals for rjsf v.5
A set of predicate functions to improve your value testing and comparisons.
RxJS operator. Packs all the source Observable values into arrays. New array is emitted every time a predicate is fulfilled.
Predicate and assert functions generator from type definitions.
Check if function is an ES6 class.
DE-9IM spatial predicate library implemented in Javascript.