Fix return type in context() (#33)

Author: zefir-git

src/NodeComponent.ts

@@ -37,7 +37,7 @@ export abstract class NodeComponent<T extends Node> {
 	 * Run a function in the context of this component
 	 * @param fn Provides this component as the first argument and `this`.
 	 */
-	public context(fn: (this: this, component: this) => this): this {
+	public context(fn: (this: this, component: this) => any): this {
 		fn.call(this, this);
 		return this;
 	}