Research
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is-map
Advanced tools
Package description
The `is-map` npm package is a utility library designed to provide a simple and efficient way to check if a given value is a Map object. It is particularly useful in scenarios where type-checking is necessary to ensure that operations on map-like structures are performed safely and correctly.
Type Checking for Map Objects
This feature allows developers to check if a given value is an instance of a Map. It is particularly useful for validating inputs or ensuring that certain operations are only performed on Map objects. The code sample demonstrates how to use `is-map` to distinguish between Map objects and regular JavaScript objects.
const isMap = require('is-map');
console.log(isMap(new Map())); // true
console.log(isMap({})); // false
The `is` package offers a comprehensive set of type-checking utilities, including the ability to check if a value is a Map. Compared to `is-map`, `is` provides a broader range of type checks, making it a more versatile choice for projects that require extensive type validation.
Part of the Lodash library, `lodash.ismap` offers functionality similar to `is-map` by providing a method to check if a value is classified as a Map object. While `is-map` focuses solely on Map type checking, `lodash.ismap` benefits from being part of the larger Lodash ecosystem, which includes a wide array of utility functions for different data types.
Readme
Node module to easily check if an object is an ES6
Map
$ npm install is-map --save
var isMap = require('is-map');
isMap(new Map());
//=> true
isMap({});
//=> false
MIT © Arthur Verschaeve
FAQs
Is this value a JS Map? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
We found that is-map 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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