Type Helpers

The properties reactive, attrs, watch and eventListeners are from the tuple type, but TypeScript doesn't automatically infer tuples and rather assumes that they are arrays. So you have to explicitly declare them as tuples. You can use the following types to do so:

Reactive ^1.0.0

Declares reactive property as a mixed array of strings and tuples.

Code

import { MinzeElement, type Reactive } from 'minze'

export interface MyElement {
  count: number
}

export class MyElement extends MinzeElement {
  reactive: Reactive = [['count', 0]]
}

Type

type Prop = string | [name: string, value: unknown, exposeAttr?: boolean]
type Reactive = readonly Prop[]

Attrs ^1.0.0

Declares attrs property as a mixed array of strings and tuples.

Code

import { MinzeElement, type Attrs } from 'minze'

export interface MyElement {
  count: number
}

export class MyElement extends MinzeElement {
  attrs: Attrs = [['count', 0]]
}

Type

type Attr = string | [name: string, value?: unknown]
type Attrs = readonly Attr[]

Watch ^1.0.0

Declares watch property as an array of tuples.

Code

import { MinzeElement, type Watch } from 'minze'

export interface MyElement {
  count: number
}

export class MyElement extends MinzeElement {
  watch: Watch = [
    ['count', (newValue, oldValue) => console.log(newValue, oldValue)]
  ]
}

Type

type Callback = (
  newValue?: any,
  oldValue?: any,
  key?: string,
  target?: object | typeof MinzeElement
) => Promise<void> | void

type Watch = readonly [name: string, callback: Callback][]

EventListeners ^1.0.0

Declares eventListeners property as an array of tuples.

Code

import { MinzeElement, type EventListeners } from 'minze'

export class MyElement extends MinzeElement {
  html = () => `<button>Click me!</button>`

  handleClick = (event: Event) => {}

  eventListeners: EventListeners = [['button', 'click', this.handleClick]]
}

Type

type EventListener = [
  eventTarget: string | MinzeElement | typeof Window | BroadcastChannel,
  eventName: string,
  callback: (event: any) => void
]

type EventListeners = readonly EventListener[]