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In the last video, he spoke about why the new type is a very bad thing to have inside of application

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right now, coordinates is of type any and it's only the case because Jason Persse returns a value of

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type any.

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And that's because TypeScript just can't predict what Jason is going to return.

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So to fix this up, one way we could fix it is to add in a type annotation for coordinates.

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So we need to add in a type invitation for an object, we already saw an example of that right back

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up here when we define the object, literal of point.

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So to add in a type annotation for an object right after the variable name were put in that colon and

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then the overall structure of that object.

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So for us, we're going to add in coordinates right here, I'll put in a colon then instead of curly

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braces and inside they're going to say this thing is going to have a property called X that is a number

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and it's going to have a property Y that is a number as well.

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So now we've given enough information to TypeScript that it can figure out what type of value coordinates

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is by now mouseover it, I see the type annotation on here and now if I try to reference, say, coordinates,

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dot, blah, blah, blah, I'll very quickly see an error message that tells me that is not a property

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on that object.

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OK, so that's pretty much it.

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This is one of the three cases where we are going to add in type annotations anytime we call a function

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that returns type any adjacent parts is just one of the functions in JavaScript that returns type any.

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There are several others as well.

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So we'll kind of see some of those different functions over time.

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And in fact, we might eventually have to write our own functions that return type any as well.

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All right, let's take a quick pause right here.

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When we come back in the next video, we'll move on to the next example or the next case where we are

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going to add in a type invitation willingly.

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So quick pause and I'll see you in just a minute.