typechecker
Advanced tools
Utilities to get and check variable types (isString, isPlainObject, isRegExp, etc)
Utilities to get and check variable types (isString, isPlainObject, isRegExp, etc)
Why should I use this instead of say instanceof?
Under certain circumstances instanceof may not return the correct results. This occurs with node's vm module especially, and circumstances where an object's prototype has been dereferenced from the original. As such, for basic == and === checks (like a === null), you're fine not using this, but for checks when you would have done instanceof (like err instanceof Error), you should try to use this instead. Plus things like isPlainObject are darn useful!
npm install --save typecheckerimport * as pkg from ('typechecker')const pkg = require('typechecker')import * as pkg from 'https://unpkg.com/typechecker@^9.3.0/edition-deno/index.ts'
<script type="module">
import * as pkg from '//cdn.skypack.dev/typechecker@^9.3.0'
</script>
<script type="module">
import * as pkg from '//unpkg.com/typechecker@^9.3.0'
</script>
<script type="module">
import * as pkg from '//dev.jspm.io/typechecker@9.3.0'
</script>
This package is published with the following editions:
typechecker aliases typechecker/index.cjs which uses the Editions Autoloader to automatically select the correct edition for the consumer's environmenttypechecker/source/index.ts is TypeScript source code with Import for modulestypechecker/edition-browsers/index.js is TypeScript compiled against ES2022 for web browsers with Import for modulestypechecker/edition-es2022/index.js is TypeScript compiled against ES2022 for Node.js 6 || 8 || 10 || 12 || 14 || 16 || 18 || 20 || 21 with Require for modulestypechecker/edition-es5/index.js is TypeScript compiled against ES5 for Node.js 4 || 6 || 8 || 10 || 12 || 14 || 16 || 18 || 20 || 21 with Require for modulestypechecker/edition-es2022-esm/index.js is TypeScript compiled against ES2022 for Node.js 12 || 14 || 16 || 18 || 20 || 21 with Import for modulestypechecker/edition-types/index.d.ts is TypeScript compiled Types with Import for modulestypechecker/edition-deno/index.ts is TypeScript source code made to be compatible with DenoDiscover the release history by heading on over to the HISTORY.md file.
Discover how to contribute via the CONTRIBUTING.md file.
Unless stated otherwise all works are:
and licensed under:
v9.3.0 2023 December 27
FAQs
Utilities to get and check variable types (isString, isPlainObject, isRegExp, etc)
We found that typechecker demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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