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