Life & fun · alternatives · 2026
24 alternatives to An opinionated approach to have type safety in native JavaScript
Post about Avocado, a small library and pattern guide to help you with type safety and data validation in native JavaScript.
Avocado is a small JavaScript library and pattern guide that provides type safety and data validation for native JavaScript projects. It helps developers maintain code organization and prevent spaghetti code by… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. An opinionated approach to have type safety in native JavaScript launched in 2015; newer entries below may have overtaken it.
- 1AI
2015 · jsblocks.com · its alternatives →
- 2

Hey there HN! I just wrapped up an all-day documentation spree for Instant API, a JavaScript framework for easily building web APIs that implements type safety at the HTTP interface. It uses a function-as-a-service approach combined with a slightly modified JSDoc spec to automatically enforce parameter and schema validation before HTTP requests make it through to your code. You just write comments above your endpoint functions and voila, enforced type safety contracts between your API endpoints and your developers. OpenAPI specifications are generated automatically as a byproduct of simply…
2023 · github.com · its alternatives →
- 3

This TypeScript package allows you to safely execute JavaScript code within a WebAssembly sandbox using the QuickJS engine. Perfect for isolating and running untrusted code securely, it leverages the lightweight and fast QuickJS engine compiled to WebAssembly, providing a robust environment for code execution. Features - *Security*: Run untrusted JavaScript code in a safe, isolated environment. - *File System*: Can mount a virtual file system - *Custom Node Modules*: Custom node modules are mountable - *Fetch Client*: Can provide a fetch client to make http(s) calls - *Test-Runner*: Includes…
2024 · github.com · its alternatives →
- 4

🥞Data Structures and Algorithms explained and implemented in JavaScript + eBook - amejiarosario/dsa.js-data-structures-algorithms-javascript
2019 · github.com · its alternatives →
- 5

An agnostic, reactive & minimalist (3kb) JavaScript UI library with direct access to native DOM.
2021 · caldom.org · its alternatives →
- 6
Danfo.js▲109Open Source JavaScript library for manipulating data.
2020 · github.com · its alternatives →
- 7

We're building a different kind of JavaScript engine, based on data-oriented design and willingness to try something quite out of left field. This is most concretely visible in our major architectural choices: 1. All data allocated on the JavaScript heap is placed into a type-specific vector. Numbers go into the numbers vector, strings into the strings vector, and so on. 2. All heap references are type-discriminated indexes: A heap number is identified by its discriminant value and the index to which it points to in the numbers vector. 3. Objects are also split up into object kind -specific…
2024 · github.com · its alternatives →
- 8KA
The most powerful type-safe SQL query builder for TypeScript
2023 · kysely.dev · its alternatives →
- 9

Hello, folks. I'm Jiang, the author of ESInfer. I love writing Javascript because it has a prosperous ecosystem and is quick to get my hands dirty. However, sometimes it's painful when the flow is not fast to follow due to the lack of a type system. To solve this, I wrote ESInfer, a statical inference tool, to automatically type check and generate type annotations for Javascript. It works with pure Javascript without any add-ons to the language or user-space code and supports highly dynamic features, such as the modification of prototypes. It is still in the very early stage, which offers…
2022 · esinfer.com · its alternatives →
- 10

Typesafe, Composable Validation. Contribute to keithasaurus/koda-validate development by creating an account on GitHub.
2022 · github.com · its alternatives →
- 11

We're excited to announce Lowdefy V4, a full-stack web framework built on top of Next.js that simplifies building web applications, internal tools, admin panels, BI dashboards, and CRUD apps using YAML or JSON configuration files. New in V4: Next.js: Lowdefy now runs on top of the Next.js framework. All of Auth.js: App auth is now handled by Auth.js supported providers, adapters and callbacks and events, easy to configure, but all of which can be customized. Plugin extensibility: Apps can now be extended with any npm or pnpm workspace plugins. Our story: We have developed a simple…
2021 · lowdefy.com · its alternatives →
- 12VJ
2011 · rickharrison.github.com · its alternatives →
- 13

2014 · github.com · its alternatives →
- 14
ProType▲157The next generation MVC JavaScript framework 🛠️
2018 · protype.js.org · its alternatives →
- 15

:icecream: vanillatype - Lightweight runtime types for vanilla JS and Node - crisdosaygo/vanillatype
2020 · github.com · its alternatives →
- 16LA
Reactive components with React-like patterns at ~9 KB gzip. Zero dependencies, zero build step, designed for humans and AI agents.
2021 · lemonadejs.net · its alternatives →
- 17

A strictly typed utility library. Contribute to MathisBullinger/froebel development by creating an account on GitHub.
2022 · github.com · its alternatives →
- 18

Elegant, highly efficient data validation for JavaScript. - lucono/xtypejs
2015 · github.com · its alternatives →
- 19KA
2022 · pypi.org · its alternatives →
- 20

- 21

2018 · blocklike.org · its alternatives →
- 22AS
Took a stab at building my own string diffing JS package. I built an interactive demo for TypeIt’s website (https://typeitjs.com/build-your-own) a while back. The approach I took to handle user input necessitated a way to calculate the difference between the versions of a user’s text input. I searched around for a package to help me out and found a couple of good ones (like fast-diff), but I either didn’t really like their API or didn’t want to take on a huge new dependency. Instead, I thought I’d give it a shot myself (famous last words). I dove into it having no real formal…
2022 · its alternatives →
- 23

Implementations of various type systems in OCaml. Contribute to tomprimozic/type-systems development by creating an account on GitHub.
2014 · github.com · its alternatives →
- 24

Hello all To preface this is just something I've been making as a learning exercise, so all feedback is appreciated. This is a tool that converts JSON schemas into TypeScript utility classes for use in Deno. Automatic Type Generation: Typescript interfaces for the compressed and uncompressed versions of your data. Compression & Decompression: Compress and decompress your data. Validation: Built-in data validation using Ajv ensures your data adheres to the schema. Reusability: Once generated, the utility classes can be used in other Deno projects. It currently only supports a subset of JSON…
2023 · github.com · its alternatives →
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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →