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363fef0efc
- Use require('util').types instead of using process.binding('util')
to get the type checking helpers
- Rename nodeUtil to nodeTypes since that is what it is for
Refs: https://github.com/nodejs/node/pull/18415
28 lines
665 B
JavaScript
28 lines
665 B
JavaScript
import getTag from './.internal/getTag.js'
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import isObjectLike from './isObjectLike.js'
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import nodeTypes from './.internal/nodeTypes.js'
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/* Node.js helper references. */
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const nodeIsMap = nodeTypes && nodeTypes.isMap
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/**
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* Checks if `value` is classified as a `Map` object.
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*
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* @since 4.3.0
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* @category Lang
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* @param {*} value The value to check.
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* @returns {boolean} Returns `true` if `value` is a map, else `false`.
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* @example
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*
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* isMap(new Map)
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* // => true
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*
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* isMap(new WeakMap)
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* // => false
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*/
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const isMap = nodeIsMap
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? (value) => nodeIsMap(value)
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: (value) => isObjectLike(value) && getTag(value) == '[object Map]'
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export default isMap
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