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object-utils.js
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object-utils.js
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/**
* Converts object to array of pairs.
* Object.entries() polyfill because it is not supported by IE
* https://caniuse.com/?search=Object.entries
* @param {Object} object
* @returns {Array} array of pairs
*/
export const getObjectEntries = (object) => {
const keys = Object.keys(object);
const entries = [];
keys.forEach((key) => entries.push([key, object[key]]));
return entries;
};
/**
* Converts array of pairs to object.
* Object.fromEntries() polyfill because it is not supported by IE
* https://caniuse.com/?search=Object.fromEntries
* @param {Array} entries - array of pairs
* @returns {Object}
*/
export const getObjectFromEntries = (entries) => {
const output = entries
.reduce((acc, el) => {
const key = el[0];
const value = el[1];
acc[key] = value;
return acc;
}, {});
return output;
};
/**
* Checks whether the obj is an empty object
* @param {Object} obj
* @returns {boolean}
*/
export const isEmptyObject = (obj) => Object.keys(obj).length === 0 && !obj.prototype;
/**
* Checks whether the obj is an empty object
* @param {Object} obj
* @param {string} prop
* @returns {Object|null}
*/
export const safeGetDescriptor = (obj, prop) => {
const descriptor = Object.getOwnPropertyDescriptor(obj, prop);
if (descriptor && descriptor.configurable) {
return descriptor;
}
return null;
};
/**
* Set getter and setter to property if it's configurable
* @param {Object} object target object with property
* @param {string} property property name
* @param {PropertyDescriptor} descriptor contains getter and setter functions
* @returns {boolean} is operation successful
*/
export function setPropertyAccess(object, property, descriptor) {
const currentDescriptor = Object.getOwnPropertyDescriptor(object, property);
if (currentDescriptor && !currentDescriptor.configurable) {
return false;
}
Object.defineProperty(object, property, descriptor);
return true;
}