Anonymous/inline interface implementation in TypeScript
OK, I finally discovered the problem to question 2 - I was using the fat arrow => to declare the object's method here:
doThatThing(<Doable>{ private message: 'ahoy-hoy!', do: () => { // using fat arrow: global scope replaces new object's scope alert(this.message); }});...which "sucked" the global scope into the method. The problem is fixed using the longer syntax, like so:
doThatThing(<Doable>{ private message: 'ahoy-hoy!', do: function() { // using "regular" anonymous function syntax, "this" meaning is preserved alert(this.message); }});So in summary:
- unanswered;
- There was a typo in my code, and I should have been using "function()" instead of "=>"; and,
- Type-asserting the object with the interface removes the compiler error.