has-value

Returns true if a value exists, false if empty. Works with deeply nested values using object paths.

v2.0.2 URL: https://unpkg.com/has-value@2.0.2/index.js

array boolean check deep empty function has hasOwn is-empty nested null number object object path properties property string type value

typechecker

Utilities to get and check variable types (isString, isPlainObject, isRegExp, etc)

v9.3.0 URL: https://unpkg.com/typechecker@9.3.0/edition-browsers/index.js

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array assert assertion async async function async-function asyncFunction bool boolean browser check check-type checking class class-identifier class-instance compare conventional class conventional-class conventionalClass date define-type deno deno-edition deno-entry denoland empty empty array empty keys empty map empty plain object empty-array empty-keys empty-map empty-plain-object emptyArray emptyKeys emptyMap emptyPlainObject error es2022 es5 function get object type get type get-object-type get-type getObjectType getType instanceof is is arguments is array is async is async function is bool is boolean is class is conventional class is date is empty array is empty keys is empty map is empty plain object is empty weak map is error is function is map is native class is null is nullish is number is object is plain object is regexp is string is sync is sync function is undefined is weak map is-arguments is-array is-async is-async-function is-bool is-boolean is-class is-conventional-class is-date is-empty-array is-empty-keys is-empty-map is-empty-plain-object is-empty-weak-map is-error is-function is-map is-native-class is-null is-nullish is-number is-object is-plain-obj is-plain-object is-regexp is-string is-sync is-sync-function is-undefined is-weak-map isArguments isArray isAsyncFunction isBool isBoolean isClass isConventionalClass isDate isEmptyArray isEmptyKeys isEmptyMap isEmptyPlainObject isEmptyWeakMap isError isFunction isMap isNativeClass isNull isNullish isNumber isObject isRegExp isString isSync isSyncFunction isUndefined isWeakMap javascript javascript-type keys kind map module native native class native-class nativeClass node null number object plain plain object plain objects plain-object plain-objects plainObject primitive primitive-types pure regex regexp regular expression simple string sync syncFunction test type type-check type-checker type-checking typechecker typed typeguards typeof types typescript undefined util utility validate validation vanilla verify weak map weak-map weakMap what-type

koalas

Coalesce for JavaScript. Returns the first value that is not undefined or null.

v1.0.2 URL: https://unpkg.com/koalas@1.0.2/index.js

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check isnull kind koala koalas null type type-of typeof undefined util utility utils value

@stdlib/assert-is-null

Test if a value is null.

v0.2.2 URL: https://unpkg.com/@stdlib/assert-is-null@0.2.2/lib/index.js

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stdlib stdassert assertion assert utilities utility utils util null is isnull type check valid validate test

is-window

Checks if the given value is a window object.

v1.0.2 URL: https://unpkg.com/is-window@1.0.2/index.js

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is check checks detect window object type null