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Okay so let's work on the
story. So first we have to
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create a fire spell array and a
frost spell array containing
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respectively firebolt firewall
and frostbolt and blizzard. So
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I think we already created
these. We just have to add
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other ones. So fire spell we
have the firebolt and we just
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screw in to create another one.
Firewall. And here we're just
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going to add a frostbolt.
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So here we are good create a
fire wizard and initialize it
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with the fire spell array sure
no problem so we have a wizard
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and we're going to initialize
it with a fire spell Okay. Okay
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create a frost wizard so let's
do the same thing with the
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frost wizard and I'm going to
call this one fire wizard and
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this one will be
initialized with the frost
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bells going to remove that
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just all the fire wizard spell
at once. So fire wizard. just
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all at once.
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Cast a big bang from the fire
wizard spell book and if you
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throw the error catch it so
indeed there is no big bang in
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this spell book okay in the
Fire Wizard spell book so
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technically it should crash so
let's make sure first that it's
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crashing fire wizard that cast
from spell book and then fire
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spell name. Big Bang so let's
see It seems that it is
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crushing indeed. You don't have
this spell in your spell book
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so we just have to catch this
error this way the application
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doesn't crash so means that
it's working so we're going to
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surround this by a try/catch
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try catch here we have the
error that is of type unknown
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for now and we're going to
console.log error and we're
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going to cast that as an error
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And this way we know that there
is a message inside. And I'm
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going to write error before.
And technically error you don't
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have the spell in your spell
look so it's working fine cool
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Now cast all the frost wizard
spell at once. So this one is
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easy. Frost wizard. cast all at
once. Okay, everything seems to
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work fine. And finally cast a
blizzard spell from the frost
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wizard spell book so this one
should work because we have the
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blizzard in the spell book so
frost wizard.cast from spell
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book
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frost spell name.blizzard
and Blizzard. Yep. It's
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working. Okay so we are good
with the story. Great. Uh okay
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cool so good job doing this
exercise. Uh now in the next
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video I'm just going to show
you how to specifically type or
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is it again? Yep. This. Okay?
Like I told you we can send
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anything and we want to
restrict that to either fire
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spell names or frost spell
names depending on the type of
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the wizard. So in the we're
going to see that we can
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actually create types
conditionally. So let's do that
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in the next one.