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refactor!: design overhaul (#1)

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* refactor!: use atom functions

* docs: reformat api reference

* docs: showcase atom functions

* docs: remove unused import

* refactor: finalize updates

* chore: misc edits
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richard 2024-03-25 19:53:28 -07:00 • committed by GitHub
parent 4d4979daa9
commit 33ecae2f50
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39 changed files with 577 additions and 729 deletions
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55
src/__tests__/subscribe.spec.luau
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@ -6,62 +6,23 @@ return function()
it("runs on state change", function()
local current, previous
local source = atom(0)
local unsubscribe, flush = subscribe(source, function(...)
local unsubscribe = subscribe(source, function(...)
current, previous = ...
end)
for index = 1, 3 do
source(index)
flush()
expect(current).to.equal(index)
expect(previous).to.equal(index - 1)
end
unsubscribe()
source(4)
flush()
expect(current).to.equal(3)
expect(previous).to.equal(2)
end)
it("batches updates", function()
local current, previous
local source = atom(0)
local _, flush = subscribe(source, function(...)
current, previous = ...
end)
source(1)
source(2)
flush()
expect(current).to.equal(2)
expect(previous).to.equal(0)
end)
it("checks equality", function()
local current, previous
local source = atom(0):memo(function(previous, current)
return current < previous
end)
local _, flush = subscribe(source, function(...)
current, previous = ...
end)
source(1)
flush()
expect(current).to.equal(1)
expect(previous).to.equal(0)
source(0)
flush()
expect(current).to.equal(1)
expect(previous).to.equal(0)
end)
it("prevents garbage collect", function()
local source = atom(1)
local updates = 0
@ -70,15 +31,13 @@ return function()
-- The idea here is to test whether subscribe() prevents every derived
-- atom in a chain from being garbage collected. If any are GCed, then
-- the subscription will stop updating and the test will fail.
local derived = derive(function()
return source()
end)
subscribe(
derive(
derive(source, function(x)
return x
end),
function(x)
return 2 * x
end
),
derive(function()
return derived() * 2
end),
function()
updates += 1
end