import { assign, createElement, detachNode, insertNode, noop, proto, setStyle } from "svelte/shared.js";

function create_main_fragment ( state, component ) {
	var div;

	return {
		create: function () {
			div = createElement( 'div' );
			this.hydrate();
		},

		hydrate: function ( nodes ) {
			setStyle(div, 'color', state.color);
		},

		mount: function ( target, anchor ) {
			insertNode( div, target, anchor );
		},

		update: function ( changed, state ) {
			if ( changed.color ) {
				setStyle(div, 'color', state.color);
			}
		},

		unmount: function () {
			detachNode( div );
		},

		destroy: noop
	};
}

function SvelteComponent ( options ) {
	this.options = options;
	this._state = options.data || {};

	this._observers = {
		pre: Object.create( null ),
		post: Object.create( null )
	};

	this._handlers = Object.create( null );

	this._root = options._root || this;
	this._yield = options._yield;
	this._bind = options._bind;

	this._fragment = create_main_fragment( this._state, this );

	if ( options.target ) {
		this._fragment.create();
		this._fragment.mount( options.target, options.anchor || null );
	}
}

assign( SvelteComponent.prototype, proto );

export default SvelteComponent;