Test if two arguments are both Float64Arrays and contain respective elements which are approximately equal within a specified number of ULPs (units in the last place).

@stdlib/assert-is-cube-number

Test if a value is a cube number.

@stdlib/assert-is-probability-array

Test if a value is an array-like object containing only probabilities.

@stdlib/assert-is-truthy

Test if a value is truthy.

@stdlib/assert-is-prime

Test if a value is a prime number.

@stdlib/assert-is-electron

Check if the runtime is Electron.

@stdlib/assert-is-duration-string

Test if a value is a duration string.

@stdlib/assert-is-positive-number-array

Test if a value is an array-like object containing only positive numbers.

@stdlib/assert-is-configurable-property

Test if an object's own property is configurable.

@stdlib/assert-is-negative-number

Test if a value is a number having a negative value.

@stdlib/assert-is-eval-error

Test if a value is an EvalError object.

@stdlib/assert-is-node-readable-stream-like

Test if a value is Node readable stream-like.

@stdlib/assert-is-email-address

Test if a value is an email address.

@stdlib/assert-is-numeric-array

Test if a value is a numeric array.

@stdlib/assert-is-safe-integer

Test if a value is a number having a safe integer value.

@stdlib/assert-is-float32ndarray-like

Test if a value is an ndarray-like object containing single-precision floating-point numbers.

@stdlib/assert-is-biguint64array

Test if a value is a BigUint64Array.

@stdlib/assert-is-float64ndarray-like

Test if a value is an ndarray-like object containing double-precision floating-point numbers.

@stdlib/assert-is-falsy

Test if a value is falsy.

@stdlib/assert-is-equal-int8array

Test if two arguments are both Int8Arrays and have equal values.

@stdlib/assert-is-electron-renderer

Check if the runtime is the Electron renderer process.

@stdlib/assert-tools-typed-array-function

Return a function which tests if every element in a typed array passes a test condition.

@stdlib/assert-is-lowercase

Test if a value is a lowercase string.

@stdlib/assert-is-equal-uint8array

Test if two arguments are both Uint8Arrays and have equal values.

@stdlib/assert-is-alphanumeric

Test whether a string contains only alphanumeric characters.

@stdlib/assert-is-equal-uint16array

Test if two arguments are both Uint16Arrays and have equal values.

@stdlib/assert-is-equal-int32array

Test if two arguments are both Int32Arrays and have equal values.

@stdlib/assert-is-infinite

Test if a value is an infinite number.

@stdlib/assert-is-date-object-array

Test if a value is an array-like object containing only Date objects.

@stdlib/assert-is-equal-uint32array

Test if two arguments are both Uint32Arrays and have equal values.

@stdlib/assert-is-equal-uint8clampedarray

Test if two arguments are both Uint8ClampedArrays and have equal values.

@stdlib/assert-deep-equal

Test for deep equality between two values.

@stdlib/assert-is-property-key

Test whether a value is a property key.

@stdlib/assert-is-data-property-in

Test if an object's own or inherited property has a data descriptor.

@stdlib/assert-is-complex64vector-like

Test if a value is a 1-dimensional ndarray-like object containing single-precision complex floating-point numbers.

@stdlib/assert-is-empty-object

Test if a value is an empty object.

@stdlib/assert-is-nonpositive-number

Test if a value is a number having a nonpositive value.

@stdlib/assert-is-equal-int16array

Test if two arguments are both Int16Arrays and have equal values.

@stdlib/assert-is-prng-like

Test if a value is PRNG-like.

@stdlib/assert-is-blank-string

Test if a value is a blank string.

@stdlib/assert-is-node-duplex-stream-like

Test if a value is Node duplex stream-like.

@stdlib/assert-is-arrow-function

Test if a value is an arrow function.

@stdlib/assert-is-float16array

Test if a value is a Float16Array.

@stdlib/assert-is-native-function

Test if a value is a native function.

@stdlib/assert-is-persymmetric-matrix

Test if a value is a persymmetric matrix.

@stdlib/assert-is-between

Test if a value is between two values.

@stdlib/assert-is-well-formed-string

Test if a string is a well-formed string.

@stdlib/assert-is-empty-string

Test if a value is an empty string.

@stdlib/assert-is-syntax-error

Test if a value is a SyntaxError object.

@stdlib/assert-is-strict-equal

Test if two arguments are strictly equal.

@stdlib/assert-is-float32vector-like

Test if a value is a 1-dimensional ndarray-like object containing single-precision floating-point numbers.

@stdlib/assert-is-range-error

Test if a value is a RangeError object.

@stdlib/assert-is-float64vector-like

Test if a value is a 1-dimensional ndarray-like object containing double-precision floating-point numbers.

@stdlib/assert-is-bigint64array

Test if a value is a BigInt64Array.

@stdlib/assert-deep-has-own-property

Test whether an object contains a nested key path.

@stdlib/assert-is-centrosymmetric-matrix

Test if a value is a centrosymmetric matrix.

@stdlib/assert-is-skew-symmetric-matrix

Test if a value is a skew-symmetric matrix.

@stdlib/assert-is-enumerable-property-in

Test if an object's own or inherited property is enumerable.

@stdlib/assert-is-anagram

Test if a value is an anagram.

@stdlib/assert-is-reference-error

Test if a value is a ReferenceError object.

@stdlib/assert-is-array-length

Test if a value is a valid array length.

@stdlib/assert-is-complex128vector-like

Test if a value is a 1-dimensional ndarray-like object containing double-precision complex floating-point numbers.

@stdlib/assert-is-circular-plain-object

Test if a value is a plain object containing a circular reference.

@stdlib/assert-is-boolean-array

Test if a value is an array-like object of booleans.

@stdlib/assert-is-data-property

Test if an object's own property has a data descriptor.

@stdlib/assert-is-nonnegative-number-array

Test if a value is an array-like object containing only nonnegative numbers.

@stdlib/assert-is-nonconfigurable-property-in

Test if an object's own or inherited property is non-configurable.

@stdlib/assert-is-electron-main

Check if the runtime is the main Electron process.

@stdlib/assert-is-named-typed-tuple-like

Test if a value is named typed tuple-like.

@stdlib/assert-is-relative-uri-cli

Test whether a value is a relative URI.

@stdlib/assert-is-hex-string

Test whether a string contains only hexadecimal digits.

@stdlib/assert-is-safe-integer-array

Test if a value is an array-like object containing only safe integers.

@stdlib/assert-is-typed-array-length

Test if a value is a valid typed array length.

@stdlib/assert-is-alphagram

Test if a value is an alphagram.

@stdlib/assert-is-docker

Check if the process is running in a Docker container.

@stdlib/assert-is-falsy-array

Test if a value is an array-like object containing only falsy values.

@stdlib/assert-is-complex64matrix-like

Test if a value is a 2-dimensional ndarray-like object containing single-precision complex floating-point numbers.

@stdlib/assert-is-square-triangular-number

Test if a value is a square triangular number.

@stdlib/assert-is-complex-typed-array-like

Test if a value is complex-typed-array-like.

@stdlib/assert-is-nonnegative-finite

Test if a value is a number having a nonnegative finite value.

@stdlib/assert-is-pascalcase

Test if a value is a string in Pascal case.

@stdlib/assert-is-truthy-array

Test if a value is an array-like object containing only truthy values.

@stdlib/assert-is-readable-property-in

Test if an object's own or inherited property is readable.

@stdlib/assert-is-relative-uri

Test whether a value is a relative URI.

@stdlib/assert-is-touch-device

Boolean indicating if the current environment is a touch device.

@stdlib/assert-is-null-array

Test if a value is an array-like object containing only null values.

@stdlib/assert-is-nonenumerable-property-in

Test if an object's own or inherited property is non-enumerable.

@stdlib/assert-is-blank-string-cli

Test if a value is a blank string.

@stdlib/assert-is-complex128ndarray-like

Test if a value is an ndarray-like object containing double-precision complex floating-point numbers.

@stdlib/assert-is-complex128matrix-like

Test if a value is a 2-dimensional ndarray-like object containing double-precision complex floating-point numbers.

@stdlib/assert-is-finite-array

Test if a value is an array-like object containing only finite numbers.

@stdlib/assert-is-accessor-property-in

Test if an object's own or inherited property has an accessor descriptor.

@stdlib/assert-is-arraybuffer-view

Test if a value is an `ArrayBuffer` view.

@stdlib/assert-is-accessor-property

Test if an object's own property has an accessor descriptor.

@stdlib/assert-is-read-only-property-in

Test if an object's own or inherited property is read-only.

@stdlib/assert-is-read-only-property

Test if an object's own property is read-only.

@stdlib/assert-is-complex

Test if a value is a 64-bit or 128-bit complex number.

@stdlib/assert-is-write-only-property

Test if an object's own property is write-only.

@stdlib/assert-is-ascii-cli

Test whether a character belongs to the ASCII character set and whether this is true for all characters in a provided string.

@stdlib/assert-is-float64matrix-like

Test if a value is a 2-dimensional ndarray-like object containing double-precision floating-point numbers.

@stdlib/assert-is-class

Test if a value is a class.

@stdlib/assert-is-generator-object-like

Test if a value is generator object-like.

@stdlib/assert-is-ragged-nested-array

Test if a value is a ragged nested array.

@stdlib/assert-is-equal-array

Test if two arguments are both generic arrays and have equal values.

@stdlib/assert-is-same-type

Test if two arguments have the same type.

@stdlib/assert-is-unc-path

Test if a value is a UNC path.

@stdlib/assert-is-complex64ndarray-like

Test if a value is an ndarray-like object containing single-precision complex floating-point numbers.

@stdlib/assert-is-same-array-like-object

Test if two arguments are both array-like objects and have the same values.

@stdlib/assert-is-negative-number-array

Test if a value is an array-like object containing only negative numbers.

@stdlib/assert-is-read-write-property

Test if an object's own property is readable and writable.

@stdlib/assert-is-configurable-property-in

Test if an object's own or inherited property is configurable.

@stdlib/assert-is-nonconfigurable-property

Test if an object's own property is non-configurable.

@stdlib/assert-is-same-typed-array-like

Test if two arguments are both typed-array-like object and have the same values.

@stdlib/assert-is-negative-finite

Test if a value is a number having a finite negative value.

@stdlib/assert-is-odd

Test if a value is an odd number.

@stdlib/assert-is-read-write-property-in

Test if an object's own and inherited property is readable and writable.

@stdlib/assert-is-almost-equal-complex128array

Test if two arguments are both Complex128Arrays and contain respective elements which are approximately equal within a specified number of ULPs (units in the last place).

@stdlib/assert-is-binary-string

Test if a value is a binary string.

@stdlib/assert-is-nonsymmetric-matrix

Test if a value is a non-symmetric matrix.

@stdlib/assert-is-almost-same-value-complex64array

Test if two arguments are both Complex64Arrays and contain respective elements which are approximately the same value within a specified number of ULPs (units in the last place).

@stdlib/assert-is-nonpositive-integer-array

Test if a value is an array-like object containing only nonpositive integers.

@stdlib/assert-is-skew-persymmetric-matrix

Test if a value is a skew-persymmetric matrix.

@stdlib/assert-is-symbol-array

Test if a value is an array-like object containing only symbols.

@stdlib/assert-is-generator-object

Test if a value is a generator object.

@stdlib/assert-is-mobile

Boolean indicating if the current environment is a mobile device.

@stdlib/assert-is-almost-same-value-float32array

Test if two arguments are both Float32Arrays and contain respective elements which are approximately the same value within a specified number of ULPs (units in the last place).

@stdlib/assert-is-node-transform-stream-like

Test if a value is Node transform stream-like.

@stdlib/assert-is-domain-name-cli

Test if a value is a domain name.

@stdlib/assert-is-same-array-like

Test if two arguments are both array-like and have the same values.

@stdlib/assert-is-snakecase

Test if a value is a string in snake case.

@stdlib/assert-is-leap-year-cli

Test if a value corresponds to a leap year in the Gregorian calendar.

@stdlib/assert-is-almost-same-value-float64array

Test if two arguments are both Float64Arrays and contain respective elements which are approximately the same value within a specified number of ULPs (units in the last place).

@stdlib/assert-is-writable-property-in

Test if an object's own or inherited property is writable.

@stdlib/assert-deep-has-property

Test whether an object contains a nested key path, either own or inherited.

@stdlib/assert-is-relative-path-cli

Test if a value is a relative path.

@stdlib/assert-is-skew-centrosymmetric-matrix

Test if a value is a skew-centrosymmetric matrix.

@stdlib/assert-is-digit-string-cli

Test whether a string contains only numeric digits.

@stdlib/assert-is-almost-equal-float32array

Test if two arguments are both Float32Arrays and contain respective elements which are approximately equal within a specified number of ULPs (units in the last place).

@stdlib/assert-is-negative-integer-array

Test if a value is an array-like object containing only negative integers.

@stdlib/assert-is-type-error

Test if a value is a TypeError object.

@stdlib/assert-is-node-builtin

Test whether a string matches a Node.js built-in module name.

@stdlib/assert-is-circular-array

Test if a value is an array containing a circular reference.

@stdlib/assert-is-same-native-class

Test if two arguments have the same native class.

@stdlib/assert-is-web-worker

Check if the runtime is a web worker.

@stdlib/assert-is-between-array

Test if a value is an array-like object where every element is between two values.

@stdlib/assert-is-almost-same-value-complex128array

Test if two arguments are both Complex128Arrays and contain respective elements which are approximately the same value within a specified number of ULPs (units in the last place).

@stdlib/assert-is-almost-equal-complex64array

Test if two arguments are both Complex64Arrays and contain respective elements which are approximately equal within a specified number of ULPs (units in the last place).

@stdlib/assert-is-binary-string-cli

Test if a value is a binary string.

@stdlib/assert-is-primitive-array

Test if a value is an array-like object containing only JavaScript primitives.

@stdlib/assert-is-uri-error

Test if a value is a URIError object.

@stdlib/assert-is-float32matrix-like

Test if a value is a 2-dimensional ndarray-like object containing single-precision floating-point numbers.

@stdlib/assert-is-absolute-uri

Test whether a value is an absolute URI.

@stdlib/assert-is-almost-equal-array

Test if two arguments are both generic arrays and contain respective elements which are approximately equal within a specified number of ULPs (units in the last place).

@stdlib/number-float16-base-assert-is-almost-equal

Test if two half-precision floating-point numbers are approximately equal within a specified number of ULPs (units in the last place).

@stdlib/assert-is-regexp-string-cli

Test if a value is a regular expression string.

@stdlib/assert-is-startcase-cli

Test if a value is a startcase string.

@stdlib/assert-is-equal-date-object

Test if two values are both Date objects corresponding to the same date and time.

@stdlib/assert-is-readable-property

Test if an object's own property is readable.

@stdlib/assert-is-absolute-http-uri

Test whether a value is an absolute HTTP(S) URI.

@stdlib/assert-is-startcase

Test if a value is a startcase string.

@stdlib/assert-is-almost-same-value-array

Test if two arguments are both generic arrays and contain respective elements which are approximately the same value within a specified number of ULPs (units in the last place).