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

@stdlib/assert-is-empty-string

Test if a value is an empty string.

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

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stdlib stdassert assertion assert utilities utility utils util empty is isstring string str isstr type check validate valid test

isempty-util

A utility library to check if a value is empty in JavaScript.

v1.0.6 URL: https://unpkg.com/isempty-util@1.0.6/index.js

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isEmpty utility empty check validation javascript nodejs npm library util helper string object array empty-checker

is-string-and-not-blank

3x as fast as `is-whitespace` and `whitespace-regex` thanks to `is-string-blank`. This package is a simple function that accepts an argument and returns `true` if it is a string AND it is not blank. Supports Node and Browser environments.

v0.0.2 URL: https://unpkg.com/is-string-and-not-blank@0.0.2/dist/is-string-and-not-blank.min.js

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blank break browser check empty ending expression is isblank isempty line lodash not null regex regexp regular str string test underscore underscore.string whitespace