# utils
[](https://www.npmjs.com/package/@cantinc/utils)
[](https://www.npmtrends.com/@cantinc/utils)
[](https://changelogs.xyz/@cantinc/utils)
[](https://github.com/cantinc/utils/blob/main/LICENSE)
## Abstract
Here you can find some utils of CANT inc.
[](https://github.com/cantinc/utils/stargazers)
[](https://github.com/cantinc/utils/watchers)
## Install
npm
```bash
npm i @cantinc/utils
```
yarn
```bash
yarn add @cantinc/utils
```
## Decorators
Now it supports old way of decorators, to use it with TypeScript flag `experimentalDecorators`
### once
Run getter or method once
```typescript
import { once } from '@cantinc/utils'
let count = 0
class Test {
@once
get value () {
count++
return 'success'
}
}
const test = new Test()
console.log(test.value)
// 'success'
console.log(test.value)
// 'success'
console.log(count)
// 1
```
## Validation
The next utils helps validate a data
### Validation
Use `validation` to make validation of an object
```typescript jsx
import {
email,
maxLength,
minLength,
required,
validation,
ValidationMap,
} from '@cantinc/utils'
interface Data {
email: string
password: string
name: string
birthday?: string
}
const validationMap: ValidationMap = {
email: required([email, maxLength(128)]),
password: required([minLength(9)]),
name: required([maxLength(128)]),
}
console.log(validation(validationMap, {}))
console.log(validation(validationMap, { email: 'error'}))
```
## Utils
### placeholder
Placeholder inserts data into a string
```typescript
import { placeholder } from '@cantinc/utils'
placeholder(`Test: {test}`, { test: 'success' })
// Test: success
```
## Issues
If you find a bug or have a suggestion, please file an issue on [GitHub](https://github.com/d8corp/innet-utils/issues).
[](https://github.com/d8corp/innet-utils/issues)