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Diffstat (limited to 'app/scripts/lib/getObjStructure.js')
-rw-r--r-- | app/scripts/lib/getObjStructure.js | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/app/scripts/lib/getObjStructure.js b/app/scripts/lib/getObjStructure.js new file mode 100644 index 000000000..52250d3fb --- /dev/null +++ b/app/scripts/lib/getObjStructure.js @@ -0,0 +1,50 @@ +const clone = require('clone') + +module.exports = 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 = clone(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 +} |