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metamask-extension/app/scripts/lib/getObjStructure.js
Mark Stacey 398a45bfdd
Replace clone dependency with cloneDeep from lodash ()
This was done to reduce the number of direct dependencies we have. It
should be functionally equivalent. The bundle size should not change,
as we use `clone` as a transitive dependency in a number of places.
2020-01-29 13:14:33 -04:00

51 lines
1.6 KiB
JavaScript

import { cloneDeep } from 'lodash'
export default getObjStructure
// This will create an object that represents the structure of the given object
// it replaces all values with the result of their type
// {
// "data": {
// "CurrencyController": {
// "conversionDate": "number",
// "conversionRate": "number",
// "currentCurrency": "string"
// }
// }
/**
* Creates an object that represents the structure of the given object. It replaces all values with the result of their
* type.
*
* @param {Object} obj - The object for which a 'structure' will be returned. Usually a plain object and not a class.
* @returns {Object} - The "mapped" version of a deep clone of the passed object, with each non-object property value
* replaced with the javascript type of that value.
*
*/
function getObjStructure (obj) {
const structure = cloneDeep(obj)
return deepMap(structure, (value) => {
return value === null ? 'null' : typeof value
})
}
/**
* Modifies all the properties and deeply nested of a passed object. Iterates recursively over all nested objects and
* their properties, and covers the entire depth of the object. At each property value which is not an object is modified.
*
* @param {Object} target - The object to modify
* @param {Function} visit - The modifier to apply to each non-object property value
* @returns {Object} - The modified object
*/
function deepMap (target = {}, visit) {
Object.entries(target).forEach(([key, value]) => {
if (typeof value === 'object' && value !== null) {
target[key] = deepMap(value, visit)
} else {
target[key] = visit(value)
}
})
return target
}