24 lines
914 B
JavaScript
24 lines
914 B
JavaScript
/* Prior art: this utility was created for https://github.com/11ty/eleventy/issues/2214
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* Inspired by implementations from `is-what`, `typechecker`, `jQuery`, and `lodash`
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* `is-what`
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* More reading at https://www.npmjs.com/package/is-what#user-content-isplainobject-vs-isanyobject
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* if (Object.prototype.toString.call(value).slice(8, -1) !== 'Object') return false;
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* return value.constructor === Object && Object.getPrototypeOf(value) === Object.prototype;
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* `typechecker`
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* return value !== null && typeof value === 'object' && value.__proto__ === Object.prototype;
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* Notably jQuery and lodash have very similar implementations.
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* For later, remember the `value === Object(value)` trick
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*/
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module.exports = function (value) {
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if (value === null || typeof value !== "object") {
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return false;
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}
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let proto = Object.getPrototypeOf(value);
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return !proto || proto === Object.prototype;
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};
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