Node.js util.types.isAsyncFunction() Method

Node.js util.types.isArrayBuffer() Method

Last Updated : 08 Oct, 2021

The util.types.isArrayBuffer() method is an inbuilt application programming interface of the util module which is used to check for built-in ArrayBuffer type objects in the node.js. Syntax:

util.types.isArrayBuffer( value )

Parameters: This method accepts single parameter as mentioned above and described below:

value: It is a required parameter of any datatype.

Return Value: It returns a boolean value i.e. TRUE if the value is a built-in ArrayBuffer object, FALSE otherwise. Below examples illustrate the use of util.types.isArrayBuffer() method in Node.js: Example 1:

javascript

// Node.js program to demonstrate the   
// util.types.isArrayBuffer() Method 

// Allocating util module
const util = require('util');

// Printing the returned value from
// util.types.isArrayBuffer() method
console.log(util.types.isArrayBuffer(new ArrayBuffer()));
console.log(util.types.isArrayBuffer(new SharedArrayBuffer()));
console.log(util.types.isArrayBuffer(39));
console.log(util.types.isArrayBuffer("gfg"));

Output:

true
false
false
false

Example:

javascript

// Node.js program to demonstrate the   
// util.types.isArrayBuffer() Method 

// Allocating util module
const util = require('util');

// Printing the returned value from 
// util.types.isArrayBuffer() method
if (util.types.isArrayBuffer(new ArrayBuffer())) {
    console.log("Passed value is built in ArrayBuffer");
}
if (util.types.isArrayBuffer(new SharedArrayBuffer())) {
    console.log("Passed value is built in ArrayBuffer");
}

Output:

Passed value is built in ArrayBuffer

Note: The above program will compile and run by using the node filename.js command. Reference: https://nodejs.org/api/util.html#util_util_types_isarraybuffer_value

Node.js util.types.isAsyncFunction() Method

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