Project-wide Svelte components type declaration for vscode

svelte.d.ts

declare module '*.svelte' {
    type Data = { [key]: any }
    type Changed = { [key]: boolean }
    type Listener = { cancel: () => void }

    export default class Component {
        root: Component
        options: Data

        constructor(init: { target: Element, data: Data })

        set(data: Data)
        get(): Data

        on(event: string, callback: (event: any) => void): Listener
        on(event: 'state', callback: ({ changed: Changed, current: Data, previous: Data }) => void): Listener
        on(event: 'destroy', callback: () => void): Listener

        fire(event: string, data: any)

        destroy()
    }
}