chapter-14.srt

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Chapter 14.
Using FakeMake to build the sample project.

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TS: So where does that get us to?

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JC: Well if we go back to the
original example that we were given,

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There was that script that I
was hacking around with, 

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trying to figure out what the
user interface to this should be.

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So this will now be lib/fakemake.

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[Silence]

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Now... With the target... there's two source files.

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I will need the target for both of those.

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These are in the namespace now.

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[Silence]

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Was it complimenter? TS: Yes.

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[Silence]

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JC: OK, so those are two targets with
no dependencies and no build instructions.

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They have hello.js. Which is derived
from hello.coffee and you build that.

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We could make a target for the lib directory,
I am not sure if I'll go through extracting that.

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Or maybe I will... Yes.

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Lib is erh.......

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Actually, directories do have mtimes.

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Yeah, target new example lib;
which has no dependencies.

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annd is built by calling make dir p example lib.

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Which means you can remove that.

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Which means that goes that way.

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Let's clone that rather than...

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[Silence]

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So complimenter.js depends on that.

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Let's do that one and then...

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So complimenter.js depends on
complimenter.coffee. That all looks OK.

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And bundle.js depends on two JavaScript files and
you build it by calling that and then you build it.

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OK so...

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This was in scratch/test.rb.

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As always, let's remove
everything that we had before.

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The tree just has the source code in it.

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If we run ruby scratch test.

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Uninitialized constant target.
Oh, I didn't namespace everything did I?

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[Silence]

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It's run everything. And
we've got everything in there.

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And example bundle contains
the code that we wanted.

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If we run it again, because we've
made it lazy enough, it should happen.

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And indeed nothing happens.

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Because we've made it this recursive structure...

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If anything does need rebuilding it
should rebuild it but not rebuild everything.

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So if I use touch, which just sets the mtime on a
file to now, and creates it if it's not there.

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If I touch example lib hello.js.
Or rather, let's touch hello.coffee. Sorry.

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TS: So this is simulating you having edited it?

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JC: Yes. So if I touch that. Hello.js is now
up to date. The complimenter.js isn't.

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So this should run the coffee
compiler once and then run uglify.

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Because the whole bundle is out of date
as well, because you changed the source file.

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So it should recompile what needs
to be recompiled but only those files.

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TS: OK.

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JC: And we see there that it has run coffee
once on hello.coffee. but not on complimenter.

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JC: So that seems to be doing what we want.

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I'm just going to check because
I haven't revisited this file in a while,

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that it is the changes we made that made it do this.

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If I delete this line, then it should become
unlazy. It should do all the work every time.

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It does, you can see it churning away there.

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I'll reinstate that line, and it becomes lazy again.

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TS: Excellent.

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JC: So that seems to do what we want.

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TS: That's great. Well congratulations
on getting it working, that's really good.

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That seems like a good place for us to stop.
Thanks very much, I've really enjoyed this.

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JC: Me too, thanks Tom.