Add hoyams blog post

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adb-sh 2 years ago
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---
sidebar: true
excerpt: "the validation tool nobody asked for | hoyams = hold on you are missing something"
meta:
- name: description
content: the validation tool nobody asked for
- name: keywords
content: Alban, David, Becker, deno, web, javascript
---
# hoyams
a simple matrix webapp for mobile and desktop
- stack: deno, typescript
- repo: [github.com](https://github.com/adb-sh/hoyams)
- - deno package: [deno.land](https://deno.land/x/hoyams)
## Concept
Rules are defined via a callback which retuns `true` or an error String. This is
so that you can define rules by using an or operator like this:
```javascript
new Rule((v) => typeof v === "string" || "is not a string");
```
or this:
```javascript
new Rule((v) =>
typeof v === "string" && !!v.match(/^\w+@\w+\.\w+$/) ||
"no valid email"
);
```
- If a executing a validation completes without an error an object with the same
structure as the object given is returned.
- For creating powerful nested object rules there are some primites given:
[How to use](https://deno.land/x/hoyams@v0.0.1#how-to-use)
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