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Don't spread/allocate empty arrays when fast instantiating

#127Merged
Comparing
empty-array-opt
(
83639d5
) with
main
(
ac90059
)
CodSpeed Performance Gauge
0%
Untouched
12
Ignored
4

Benchmarks

16 total
instantiating a small root
bench/instantiation.benchmark.ts
CodSpeed Performance Gauge
+2%
29.2 µs28.5 µs
accessing unmemoized getter properties of a class model
bench/property-access.benchmark.ts
CodSpeed Performance Gauge
+1%
16.1 µs15.9 µs
accessing unmemoized null property of a class model
bench/property-access.benchmark.ts
CodSpeed Performance Gauge
+1%
11 µs10.9 µs
accessing memoized null property of a class model
bench/property-access.benchmark.ts
CodSpeed Performance Gauge
0%
10.4 µs10.3 µs
accessing memoized getter properties of a class model
bench/property-access.benchmark.ts
CodSpeed Performance Gauge
0%
10.8 µs10.7 µs
mobx-quick-tree ClassModel
bench/cross-framework.benchmark.ts
CodSpeed Performance Gauge
0%
37.9 µs37.9 µs
instantiating one reference
bench/create-references.benchmark.ts
CodSpeed Performance Gauge
0%
35 µs35 µs
instantiating a diverse root
bench/instantiation.benchmark.ts
CodSpeed Performance Gauge
0%
44 µs44 µs
instantiating deep references
bench/create-references.benchmark.ts
CodSpeed Performance Gauge
0%
79.1 µs79.2 µs
mobx-state-tree ClassModel
bench/cross-framework.benchmark.ts
CodSpeed Performance Gauge
-1%
1.1 ms1.1 ms
instantiating a large union
bench/create-union.benchmark.ts
CodSpeed Performance Gauge
-1%
56.5 µs56.9 µs
instantiating a large root
bench/instantiation.benchmark.ts
CodSpeed Performance Gauge
-8%
2.5 ms2.7 ms
mobx-quick-tree types.model
bench/cross-framework.benchmark.ts
Ignored
CodSpeed Performance Gauge
-3%
149.6 µs153.8 µs
mobx-state-tree
bench/cross-framework.benchmark.ts
Ignored
CodSpeed Performance Gauge
0%
1.1 ms1.1 ms
plain es6
bench/cross-framework.benchmark.ts
Ignored
CodSpeed Performance Gauge
-1%
16.8 µs16.9 µs
plain mobx
bench/cross-framework.benchmark.ts
Ignored
CodSpeed Performance Gauge
-3%
262.6 µs271.5 µs

Commits

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Base
main
ac90059
-0.45%
Don't spread/allocate empty arrays when fast instantiating
83639d5
10 months ago
by airhorns
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