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#is

Every repository in the public record carrying this tag — from its GitHub topics or the keywords its package registries publish. Health is measured under the same versioned methodology as the rest of the record.

42 records
Tagged “is”Ranked by health index
npm
65Moderatehealth index
sindresorhus/is
Type check values
TypeScript★ 1,790↓ 204M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
npm
62Moderatehealth index
inspect-js/is-accessor-descriptor
Returns true if a value has the characteristics of a valid JavaScript accessor descriptor.
JavaScript★ 15↓ 94.9M/moJul 18, 2026
MITJul 18, 2026 · metrics 1.13.0
npm
60Moderatehealth index
inspect-js/is-core-module
Is this specifier a node.js core module?
JavaScript★ 26↓ 612M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
npm
59Moderatehealth index
seijikohara/switch-ts
Switch-case with support for complex conditions for TypeScript
TypeScript★ 3↓ 11.7K/moJul 15, 2026
MITJul 15, 2026 · metrics 1.13.0
npm
57Moderatehealth index
syntax-tree/unist-util-is
utility to check if a node passes a test
JavaScript · TypeScript★ 45↓ 212M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
npm
55Moderatehealth index
inspect-js/is-generator-function
Is this an ES6 generator function?
JavaScript★ 49↓ 324M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
npm
55Moderatehealth index
inspect-js/is-regex
Is this value a JS regex?
JavaScript★ 24↓ 368M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
npm
54Moderatehealth index
inspect-js/is-symbol
Is this an ES6 Symbol value?
JavaScript★ 19↓ 315M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
npm
53Moderatehealth index
inspect-js/is-array-buffer
Is this value a JS ArrayBuffer? This module works cross-realm/iframe, does not depend on `instanceof` or mutable properties, and despite ES6 Symbol.toStringTag.
JavaScript★ 13↓ 299M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
npm
53Moderatehealth index
inspect-js/is-date-object
Is this value a JS Date object? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
JavaScript★ 16↓ 333M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
npm
53Moderatehealth index
inspect-js/is-typed-array
Is this value a JS Typed Array? This module works cross-realm/iframe, does not depend on `instanceof` or mutable properties, and despite ES6 Symbol.toStringTag.
JavaScript★ 12↓ 367M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
npm
53Moderatehealth index
sindresorhus/is-wsl
Check if the process is running inside Windows Subsystem for Linux (Bash on Windows)
JavaScript★ 198↓ 449M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
npm
52Moderatehealth index
inspect-js/is-bigint
Is this an ES BigInt value?
JavaScript★ 7↓ 319M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
npm
52Moderatehealth index
inspect-js/is-boolean-object
Is this value a JS Boolean? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
JavaScript★ 8↓ 322M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
npm
52Moderatehealth index
inspect-js/is-number-object
Is this value a JS Number object? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
JavaScript★ 8↓ 295M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
npm
51Moderatehealth index
inspect-js/is-negative-zero
Is this value negative zero? === will lie to you.
JavaScript★ 18↓ 294M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
npm
51Moderatehealth index
sindresorhus/is-fullwidth-code-point
Check if the character represented by a given Unicode code point is fullwidth
JavaScript · TypeScript★ 51↓ 1.1B/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
npm
50Moderatehealth index
inspect-js/is-weakset
Is this value a JS WeakSet? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
JavaScript★ 3↓ 293M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
npm
50Moderatehealth index
sindresorhus/path-type
Check if a path is a file, directory, or symlink
JavaScript · TypeScript★ 80↓ 381M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
npm
49At riskhealth index
inspect-js/is-set
Is this value a JS Set? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
JavaScript★ 3↓ 293M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
npm
48At riskhealth index
micromatch/is-glob
If you use globs, this will make your code faster. Returns `true` if the given string looks like a glob pattern or an extglob pattern. This makes it easy to create code that only uses external modules like node-glob when necessary, resulting in much faster code execution and initialization time, and a better user experience. 55+ million downloads.
JavaScript★ 96↓ 689M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
npm
48At riskhealth index
sindresorhus/is-docker
Check if the process is running inside a Docker container
JavaScript★ 235↓ 431M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
npm
47At riskhealth index
inspect-js/is-finalizationregistry
Is this value a JS FinalizationRegistry? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
JavaScript★ 2↓ 242M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
npm
47At riskhealth index
inspect-js/is-map
Is this value a JS Map? This module works cross-realm/iframe, and despite %Symbol.toStringTag%.
JavaScript★ 9↓ 294M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
npm
47At riskhealth index
inspect-js/is-weakmap
Is this value a JS WeakMap? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
JavaScript★ 3↓ 281M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
npm
46At riskhealth index
inspect-js/is-shared-array-buffer
Is this value a JS SharedArrayBuffer? This module works cross-realm/iframe, does not depend on `instanceof` or mutable properties, and despite ES6 Symbol.toStringTag.
JavaScript★ 3↓ 308M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
npm
46At riskhealth index
sindresorhus/is-binary-path
Check if a file path is a binary file
JavaScript★ 49↓ 383M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
npm
44At riskhealth index
sindresorhus/is-stream
Check if something is a Node.js stream
JavaScript · TypeScript★ 116↓ 656M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
npm
43At riskhealth index
sindresorhus/is-obj
Check if a value is an object
JavaScript · TypeScript★ 42↓ 202M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
npm
42At riskhealth index
sindresorhus/is-generator-fn
Check if something is a generator function
JavaScript · TypeScript★ 24↓ 155M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0