How to check that an 'unknown' object has a specific key and that the key is a specific type?

• Superstruct

  26 6,797 5.7 TypeScript

  A simple and composable way to validate data in JavaScript (and TypeScript).

⭐ Recommended: Doing this manually is a ton of work, and if you're dealing with unknown objects often it would be better to lean onto a validation library to simplify it. My personal favorite is superstruct, although lots of people like joi or zod. They all do the same thing

• joi

  14 19,052 5.8 JavaScript

  Discontinued The most powerful data validation library for JS [Moved to: https://github.com/hapijs/joi]

  

⭐ Recommended: Doing this manually is a ton of work, and if you're dealing with unknown objects often it would be better to lean onto a validation library to simplify it. My personal favorite is superstruct, although lots of people like joi or zod. They all do the same thing

• SurveyJS

  surveyjs.io sponsored

  Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.

  

• zod

  286 30,174 9.1 TypeScript

  TypeScript-first schema validation with static type inference

⭐ Recommended: Doing this manually is a ton of work, and if you're dealing with unknown objects often it would be better to lean onto a validation library to simplify it. My personal favorite is superstruct, although lots of people like joi or zod. They all do the same thing

• runtypes

  22 2,545 5.6 TypeScript

  Runtime validation for static types

  

Seconding the recommendation to use a library for this. runtypes and io-ts are two other alternatives.

• io-ts

  80 6,593 4.9 TypeScript

  Runtime type system for IO decoding/encoding

Seconding the recommendation to use a library for this. runtypes and io-ts are two other alternatives.

• InfluxDB

  www.influxdata.com sponsored

  Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

  

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