How to use the svelte/shared.js.assign function in svelte

}

function SvelteComponent(options) {
	init(this, options);
	this._state = assign({}, options.data);
	this._intro = true;

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

	if (options.target) {
		this._fragment.c();
		this._mount(options.target, options.anchor);
	}
}

assign(SvelteComponent.prototype, proto);
assign(SvelteComponent.prototype, methods);
export default SvelteComponent;

function SvelteComponent(options) {
	init(this, options);
	this._state = assign({}, options.data);

	this._handlers.destroy = [ondestroy];

	var _oncreate = oncreate.bind(this);

	if (!options.root) {
		this._oncreate = [];
	}

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

	this.root._oncreate.push(_oncreate);

	if (options.target) {
		this._fragment.c();
		this._mount(options.target, options.anchor);

}

function SvelteComponent(options) {
	init(this, options);
	this._state = assign({}, options.data);
	this._intro = true;

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

	if (options.target) {
		this._fragment.c();
		this._mount(options.target, options.anchor);
	}
}

assign(SvelteComponent.prototype, proto);
export default SvelteComponent;

function SvelteComponent(options) {
	init(this, options);
	this._state = assign({}, options.data);
	this._intro = true;

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

	if (options.target) {
		this._fragment.c();
		this._mount(options.target, options.anchor);

		flush(this);
	}
}

}

function SvelteComponent(options) {
	init(this, options);
	this._state = assign({}, options.data);
	this._intro = true;

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

	if (options.target) {
		this._fragment.c();
		this._mount(options.target, options.anchor);
	}
}

assign(SvelteComponent.prototype, proto);
export default SvelteComponent;

function SvelteComponent(options) {
	init(this, options);
	this._state = assign({}, options.data);
	this._intro = true;

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

	if (options.target) {
		this._fragment.c();
		this._mount(options.target, options.anchor);
	}
}

function SvelteComponent(options) {
	init(this, options);
	this._state = assign({}, options.data);
	this._intro = true;

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

	if (options.target) {
		this._fragment.c();
		this._mount(options.target, options.anchor);

		flush(this);
	}
}

assign(SvelteComponent.prototype, proto);
export default SvelteComponent;

function SvelteComponent(options) {
	init(this, options);
	this._state = assign({}, options.data);

	if (!options.root) {
		this._oncreate = [];
		this._beforecreate = [];
		this._aftercreate = [];
	}

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

	if (options.target) {
		this._fragment.c();
		this._fragment.m(options.target, options.anchor || null);

		this._lock = true;
		callAll(this._beforecreate);
		callAll(this._oncreate);

get name() {
		return this.get('name');
	}

	set name(value) {
		this.set({ name: value });
	}

	attributeChangedCallback(attr, oldValue, newValue) {
		this.set({ [attr]: newValue });
	}
}

customElements.define("custom-element", SvelteComponent);
assign(SvelteComponent.prototype, proto , {
	_mount(target, anchor) {
		this._fragment.mount(this.shadowRoot, null);
		target.insertBefore(this, anchor);
	},

	_unmount() {
		this.parentNode.removeChild(this);
	}
});

export default SvelteComponent;

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

	if (options.target) {
		this._fragment.c();
		this._fragment.m(options.target, options.anchor || null);

		this._lock = true;
		callAll(this._beforecreate);
		callAll(this._oncreate);
		callAll(this._aftercreate);
		this._lock = false;
	}
}

assign(SvelteComponent.prototype, proto);
export default SvelteComponent;