v8is

Type checking on all sorts of values/objects

Note: v8is is only supported on Node.js v4+.

Install

$ npm install v8is

Test

$ npm test

API

require it using:

const v8is = require('v8is')

The following functions are available:

NOTE: each function requires 1 argument. An error will be thrown otherwise

`isUndefined(arg)`

v8is.isUndefined(undefined) // => true
v8is.isUndefined(null)      // => false

`isNull(arg)`

v8is.isNull(null)      // => true
v8is.isNull(undefined) // => false

`isTrue(arg)`

v8is.isTrue(true)  // => true
v8is.isTrue(false) // => false

`isFalse(arg)`

`isString(arg)`

`isSymbol(arg)`

`isFunction(arg)`

`isArray(arg)`

`isObject(arg)`

`isBoolean(arg)`

`isNumber(arg)`

`isInt32(arg)`

`isUint32(arg)`

`isDate(arg)`

`isArgumentsObject(arg)`

`isBooleanObject(arg)`

`isNumberObject(arg)`

`isStringObject(arg)`

`isError(arg)`

Alias to isNativeError

`isRegExp(arg)`

`isGeneratorFunction(arg)`

`isGeneratorObject(arg)`

`isPromise(arg)`

only works for native promises

`isMap(arg)`

`isSet(arg)`

`isMapIterator(arg)`

`isSetIterator(arg)`

`isWeakMap(arg)`

`isWeakSet(arg)`

`isArrayBuffer(arg)`

`isArrayBufferView(arg)`

`isTypedArray(arg)`

`isUint8Array(arg)`

`isUint8ClampedArray(arg)`

`isInt8Array(arg)`

`isUint16Array(arg)`

`isInt16Array(arg)`

`isUint32Array(arg)`

`isInt32Array(arg)`

`isFloat32Array(arg)`

`isFloat64Array(arg)`

`isDataView(arg)`

`isSharedArrayBuffer(arg)`

`isProxy(arg)`

Only supported on Node.js v6+. One should check before trying to use this.

'use strict'

const is = require('v8is')
if (is.isProxy) {
  // ...
}

`isWebAssemblyCompiledModule(arg)`

Only supported on Node.js v7.0+. One should check before trying to use this.

`isAsyncFunction(arg)`

Only supported on Node.js v7.6+. One should check before trying to use this.

Author

Evan Lucas

License

MIT (See LICENSE for more info)

Name		Name	Last commit message	Last commit date
Latest commit History 40 Commits
src		src
test		test
.gitignore		.gitignore
.travis.yml		.travis.yml
LICENSE		LICENSE
README.md		README.md
binding.gyp		binding.gyp
index.js		index.js
package.json		package.json

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evanlucas/v8is

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v8is

Install

Test

API

isUndefined(arg)

isNull(arg)

isTrue(arg)

isFalse(arg)

isString(arg)

isSymbol(arg)

isFunction(arg)

isArray(arg)

isObject(arg)

isBoolean(arg)

isNumber(arg)

isInt32(arg)

isUint32(arg)

isDate(arg)

isArgumentsObject(arg)

isBooleanObject(arg)

isNumberObject(arg)

isStringObject(arg)

isError(arg)

isRegExp(arg)

isGeneratorFunction(arg)

isGeneratorObject(arg)

isPromise(arg)

isMap(arg)

isSet(arg)

isMapIterator(arg)

isSetIterator(arg)

isWeakMap(arg)

isWeakSet(arg)

isArrayBuffer(arg)

isArrayBufferView(arg)

isTypedArray(arg)

isUint8Array(arg)

isUint8ClampedArray(arg)

isInt8Array(arg)

isUint16Array(arg)

isInt16Array(arg)

isUint32Array(arg)

isInt32Array(arg)

isFloat32Array(arg)

isFloat64Array(arg)

isDataView(arg)

isSharedArrayBuffer(arg)

isProxy(arg)

isWebAssemblyCompiledModule(arg)

isAsyncFunction(arg)

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Languages

`isUndefined(arg)`

`isNull(arg)`

`isTrue(arg)`

`isFalse(arg)`

`isString(arg)`

`isSymbol(arg)`

`isFunction(arg)`

`isArray(arg)`

`isObject(arg)`

`isBoolean(arg)`

`isNumber(arg)`

`isInt32(arg)`

`isUint32(arg)`

`isDate(arg)`

`isArgumentsObject(arg)`

`isBooleanObject(arg)`

`isNumberObject(arg)`

`isStringObject(arg)`

`isError(arg)`

`isRegExp(arg)`

`isGeneratorFunction(arg)`

`isGeneratorObject(arg)`

`isPromise(arg)`

`isMap(arg)`

`isSet(arg)`

`isMapIterator(arg)`

`isSetIterator(arg)`

`isWeakMap(arg)`

`isWeakSet(arg)`

`isArrayBuffer(arg)`

`isArrayBufferView(arg)`

`isTypedArray(arg)`

`isUint8Array(arg)`

`isUint8ClampedArray(arg)`

`isInt8Array(arg)`

`isUint16Array(arg)`

`isInt16Array(arg)`

`isUint32Array(arg)`

`isInt32Array(arg)`

`isFloat32Array(arg)`

`isFloat64Array(arg)`

`isDataView(arg)`

`isSharedArrayBuffer(arg)`

`isProxy(arg)`

`isWebAssemblyCompiledModule(arg)`

`isAsyncFunction(arg)`

Packages