30-seconds-of-code/snippets/assertValidKeys.md

title, tags, expertise, author, cover, firstSeen

title	tags	expertise	author	cover	firstSeen
Assert object keys are valid	object	intermediate	chalarangelo	blog_images/river-flow.jpg	2021-07-18T05:00:00-04:00

Validates all keys in an object match the given keys.

• Use Object.keys() to get the keys of the given object, obj.
• Use Array.prototype.every() and Array.prototype.includes() to validate that each key in the object is specified in the keys array.

const assertValidKeys = (obj, keys) =>
  Object.keys(obj).every(key => keys.includes(key));

assertValidKeys({ id: 10, name: 'apple' }, ['id', 'name']); // true
assertValidKeys({ id: 10, name: 'apple' }, ['id', 'type']); // false