validator.js
zod
validator.js | zod | |
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23 | 292 | |
22,636 | 30,778 | |
0.7% | - | |
7.0 | 9.1 | |
6 days ago | 4 days ago | |
JavaScript | TypeScript | |
MIT License | MIT License |
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validator.js
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How a URL Shortener Works and How to Build One with Next.js
To keep the focus of this guide on building our chat app, I'll skip the steps in setting up certain dependencies, such as Tailwind CSS for styling, Nano ID for generating strings used to create a short URL version of an original URL and validator for implement URL validation.
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A meticulous JWT API Authentication guide you've been looking for
express-validator is a set of express.js middlewares that wraps validator.js validator and sanitizer functions.
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Is there any point in sanitizing (stripping/encoding) user inputs when all output will be encoded by the app?
For emails, a robust email validator from a well maintained package such as validator would be a good idea.
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First name, last name criteria and input sanitising - unicode, 1 to 50 chars, trim & striptags?
Regarding escaping brackets and ampersands - would you do this prior to storing the value in the DB? This would seem like the only way to do it, otherwise you are looking at escaping after DB queries or escaping in the client, neither of which I like. React automatically escapes strings but it's not something I want to leave to chance, and I do not want "dangerous" data in storage. validatorjs's escape() function would seem the best fit for the job.
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Validator.js wrapper for GraphQL directive. Use a comprehensive list of validation logic in your GraphQL schema using directive
Sorry, are you referring to this https://github.com/validatorjs/validator.js as a wrapper
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[AskJS] Which utility libraries are in your opinion so good they are basicaly mandatory?
+1 for lodash! It's like a superpower once you realize everything it can do. Another good one is validator.js.
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validator.js VS deno_validate - a user suggested alternative
2 projects | 17 Sep 2022
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Validator errors (js, Node, MongoDB)
I'm taking a Javascript course at the moment, and while it's truly fantastic, parts of the Mongo stuff could use some updating (already had to course correct with some syntax). I'm now getting an error I really don't know what to do with, and SO isn't helping in this case. Per the course, we're using validator (https://www.npmjs.com/package/validator). Most relevant code file:
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Setting up an express application with controllers and routing
emailIsValid uses the helper method isEmail from the validator package to assert that the provided email is a valid email format
- Validator.js – String Validation
zod
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Simplifying Form Validation with Zod and React Hook Form
[Zod Documentation](https://zod.dev/) [Zod Error Handling](https://zod.dev/ERROR_HANDLING?id=error-handling-in-zod) [React-Hook-Form Documentation](https://react-hook-form.com/get-started) [Hookform Resolvers](https://www.npmjs.com/package/@hookform/resolvers)
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Figma's Journey to TypeScript
This is a very fair comment, and you seem open to understanding why types are useful.
"problems that are due to typing" is a very difficult thing to unpack because types can mean _so_ many things.
Static types are absolutely useless (and, really, a net negative) if you're not using them well.
Types don't help if you don't spend the time modeling with the type system. You can use the type system to your advantage to prevent invalid states from being represented _at all_.
As an example, consider a music player that keeps track of the current song and the current position in the song.
If you model this naively you might do something like: https://gist.github.com/shepherdjerred/d0f57c99bfd69cf9eada4...
In the example above you _are_ using types. It might not be obvious that some of these issues can be solved with stronger types, that is, you might say that "You rarely see problems that are due to typing".
Here's an example where the type system can give you a lot more safety: https://gist.github.com/shepherdjerred/0976bc9d86f0a19a75757...
You'll notice that this kind of safety is pretty limited. If you're going to write a music app, you'll probably need API calls, local storage, URL routes, etc.
TypeScript's typechecking ends at the "boundaries" of the type system, e.g. it cannot automatically typecheck your fetch or localStorage calls return the correct types. If you're casting, you're bypassing the type systems and making it worthless. Runtime type checking libraries like Zod [0] can take care of this for you and are able to typecheck at the boundaries of your app so that the type system can work _extremely_ well.
[0]: https://zod.dev/ note: I mentioned Zod because I like it. There are _many_ similar libraries.
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From Flaky to Flawless: Angular API Response Management with Zod
Zod is an open-source schema declaration and validation library that emphasizes TypeScript. It can refer to any data type, from simple to complex. Zod eliminates duplicative type declarations by inferring static TypeScript types and allows easy composition of complex data structures from simpler ones. It has no dependencies, is compatible with Node.js and modern browsers, and has a concise, chainable interface. Zod is lightweight (8kb when zipped), immutable, with methods returning new instances. It encourages parsing over validation and is not limited to TypeScript but works well with JavaScript as well.
- TypeScript Essentials: Distinguishing Types with Branding
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You can’t run away from runtime errors using TypeScript
Zod is a TypeScript-first schema declaration and validation library. It helps create schemas for any data type and is very developer-friendly. Zod has the functional approach of "parse, don't validate." It supports coercion in all primitive types.
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Best Next.js Libraries and Tools in 2024
Link: https://zod.dev/
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Popular Libraries For Building Type-safe Web Application APIs
You can check out their documentation here.
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Epic Next JS 14 Tutorial Part 4: How To Handle Login And Authentication in Next.js
You can learn more about Zod on their website here.
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What even is a JSON number?
In JS, it's a good idea anyway to use some JSON parsing library instead of JSON.parse.
With Zod, you can use z.bigint() parser. If you take the "parse any JSON" snippet https://zod.dev/?id=json-type and change z.number() to z.bigint(), it should do what you are looking for.
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Error handling in our form component for the NextAuth CredentialsProvider
We will validate our input using client-side zod. Zod handles TypeScript-first schema validation with static type inference. This means that it will not only validate your fields, it will also set types on validated fields.
What are some alternatives?
Parsley.js - Validate your forms, frontend, without writing a single line of javascript
class-validator - Decorator-based property validation for classes.
jquery-validation - jQuery Validation Plugin library sources
joi - The most powerful data validation library for JS [Moved to: https://github.com/sideway/joi]
vee-validate - ✅ Painless Vue forms
typebox - Json Schema Type Builder with Static Type Resolution for TypeScript
validate.js - Lightweight JavaScript form validation library inspired by CodeIgniter.
Yup - Dead simple Object schema validation
vuelidate - Simple, lightweight model-based validation for Vue.js
ajv - The fastest JSON schema Validator. Supports JSON Schema draft-04/06/07/2019-09/2020-12 and JSON Type Definition (RFC8927)
BootstrapValidator - For anyone who want to use the previous version (BootstrapValidator)
io-ts - Runtime type system for IO decoding/encoding