2444 packages found
Description
Returns true if an object was created by the `Object` constructor, or Object.create(null).
Keywords
Publisher
Description
Detect the file type of a Buffer/Uint8Array/ArrayBuffer
Keywords
Publisher
Description
Media Type Database
Keywords
Publisher
Description
Check if a path is a file, directory, or symlink
Keywords
Publisher
Description
Check if a value is a plain object
Keywords
Publisher
Description
Determine if an object is a Buffer
Keywords
- arraybuffer
- browser
- browser buffer
- browserify
- buffer
- buffers
- core buffer
- dataview
- float32array
- float64array
- int16array
- int32array
- type
- typed array
Publisher
Description
Get the native type of a value.
Keywords
Publisher
Description
Determine if an object is a Stream
Keywords
Publisher
Description
Avro for JavaScript
Keywords
Publisher
Description
Type check values
Keywords
Publisher
Description
Check if a value is an object
Keywords
Publisher
Description
ECMAScript “ToPrimitive” algorithm. Provides ES5 and ES2015 versions.
Keywords
- primitive
- abstract
- ecmascript
- es5
- es6
- es2015
- toPrimitive
- coerce
- type
- object
- string
- number
- boolean
- symbol
- View more
Publisher
Description
unist utility to select nodes with CSS-like selectors
Keywords
Publisher
Description
Runtime validation and processing of JavaScript types
Keywords
Publisher
Description
unist utility to check if a node passes a test
Keywords
Publisher
Description
Returns true if a number or string value is a finite number. Useful for regex matches, parsing, user input, etc.
Keywords
Publisher
Description
Function argument validation for humans
Keywords
- type
- types
- check
- checking
- guard
- guards
- assert
- assertion
- predicate
- predicates
- is
- validate
- validation
- utility
- View more
Publisher
Description
A little library for asserting types and values.
Keywords
- type
- types
- type-check
- type-checking
- duck-typing
- arguments
- parameters
- values
- data
- contract
- assert
- check
- verify
- safe
Publisher
Description
the definitive JavaScript type testing library
Keywords
Publisher
Description
A type checking library where each exported function returns either true or false and does not throw. Also added tests.