File validation library
npm install zeppol   
bash
pnpm add zeppol
npm install zeppol
`
$3
`html
`
$3
`js
import { checkFileValidity } from 'zeppol'
`
or
$3
`html
`
How to use
$3
`js
import { type ZRules, type Validator, checkFileValidity} from 'zeppol'
// Add ZRules if you want autocompletion and type checking
const rules: ZRules = {
audio: {
$params: {
minSize: {
value: 0,
},
maxSize: 1000000,
minDuration: 10,
maxDuration: {
value: 60,
// Custom error message
message: 'The file must be shorter than 60 seconds'
},
mime: ['audio/mpeg', 'wav']
},
// Custom validators
$validators: {
name(file) {
return {
valid: file.name.length > 10,
message: File name must be longer than 10 characters
}
}
}
}
}
const audioFile = document.getElementById('audio-file')
audioFile.addEventListener('input', async ({ target }) => {
const file = target.files[0]
await checkFileValidity(file, rules) // This will throw an error if the file is not valid
})
`
The above example defines the following rules for the file:
- The file must be an audio file
- The file must have a size between 0 and 1000000 bytes
- The file must have a duration between 10 and 60 seconds
- The file must be of type audio/mpeg or audio/wav
- The file name must be longer than 10 characters
Audio rules
`ts
mime: string | string[]
minSize: number
maxSize: number
minDuration: number
maxDuration: number
`
Image rules
`ts
mime: string | string[]
minSize: number
maxSize: number
minWidth: number
maxWidth: number
minHeight: number
maxHeight: number
`
Video rules
`ts
mime: string | string[]
minSize: number
maxSize: number
minWidth: number
maxWidth: number
minHeight: number
maxHeight: number
``