Fluent JSON validator -- an easy-to-use and flexible JSON object validator with a nice builder pattern API!

This page summarizes the projects mentioned and recommended in the original post on /r/node

SurveyJS - JavaScript Form Builder with No-Code UI & Built-In JSON Schema Editor
Keep full control over the data you collect and tailor the form builder’s entire look and feel to your users’ needs. SurveyJS works with React, Angular, Vue 3, and is compatible with any backend or auth system. Learn more.
surveyjs.io
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InfluxDB – Built for High-Performance Time Series Workloads
InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
www.influxdata.com
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  1. fluent-json-validator

    An easy-to-use, expressive, and composable JSON object validator, with a fluent builder pattern interface!

  2. SurveyJS

    JavaScript Form Builder with No-Code UI & Built-In JSON Schema Editor. Keep full control over the data you collect and tailor the form builder’s entire look and feel to your users’ needs. SurveyJS works with React, Angular, Vue 3, and is compatible with any backend or auth system. Learn more.

    SurveyJS logo
  3. io-ts

    Runtime type system for IO decoding/encoding

    Take a look at io-ts https://github.com/gcanti/io-ts. It does not only validate, but also decodes, encodes and gives you typescript types.

  4. Recordari

    Recordari is a type and structure validation tool for configuration files

    I made something similar a while back :) https://github.com/Olian04/Recordari

  5. typebox

    Json Schema Type Builder with Static Type Resolution for TypeScript

    This one does the same, but actually deals in JSON schema https://github.com/sinclairzx81/typebox

NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.

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