北京植物园桃花节开幕 集中展出百余种春花
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Returns true if a number or string value is a finite number. Useful for regex matches, parsing, user input, etc.
Get the native type of a value.
Returns true if an object was created by the `Object` constructor, or Object.create(null).
Returns true if the value is an object and not an array or null.
Type check values
Check if something is a promise
Coalesce for JavaScript. Returns the first value that is not undefined or null.
`util.inspect` with additional type information
Utilities to get and check variable types (isString, isPlainObject, isRegExp, etc)
- array
- assert
- assertion
- async
- async function
- async-function
- asyncFunction
- bool
- boolean
- browser
- check
- check-type
- checking
- class
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Minimal JavaScript type checking library
A proper typeof that works with primitives, built-in value objects and those from other execution contexts.
Type check values. This is a fork of sindresorhus/is, but with CommonJS support.
Type check values: `is.string('??') //=> true`
Better 'typeof'. Detects real type of the objects like 'Array()', 'new Number(1)', 'new Boolean(true)', etc.
A thin wrapper for fs to group files by type
An extension to the `mout/lang` utilities
- AMD
- bugfix
- camelCase
- check
- checks
- CJS
- CommonJS
- ECMAScript
- ES
- extension
- fix
- instanceOf
- isKind
- isPrimitive
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Determine if an ndarray data type can be safely cast to, or is of the same kind as, another ndarray data type.
A simple utility to Check the value is number or can convert to a number, for example string ' 123 ' can be converted to 123.
A node.js type detection and comparison library
Check type of given javascript value. Support promises, generators, streams, and native types. Built on [kind-of][] lib.