Metafy

Convert any normal object into an object with meta data that describes and limits how the data can be interacted with.

To use

yarn add metafy

To prevent changing the type of a property.

const metafy = require('metafy')

const MyObject = metafy({
   message: 'Hello, world!'
})

MyObject.message.$lock() // Prevents changing of types

try {
    MyObject.message = 5
} catch (err) {
    // Will throw because attempted to change type.
}

To prevent changing a property in any way.

const metafy = require('metafy')

const MyObject = metafy({
   message: 'Hello, world!'
})

MyObject.message.$freeze() // Freeze the value

try {
   MyObject.message = 'Hello!'
} catch (err) {
   // Will throw because value was reassigned by is frozen.
}