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