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Fixes issue 10530#46121

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easyrider wants to merge 2 commits intomicrosoft:mainfrom
easyrider:issue-10530
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Fixes issue 10530#46121
easyrider wants to merge 2 commits intomicrosoft:mainfrom
easyrider:issue-10530

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@easyrider
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@easyrider easyrider commented Sep 28, 2021 •
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Fixes #10530 (since 2016)

This is my first PR in this project.
Please help with performance testing - I'd like to examine performance impact on mid/big size project.

Fixes:

    if (pirates[index].hands) pirates[index].hands++;
                              ~~~~~~~~~~~~~~~~~~~~
!!! error TS2532: Object is possibly 'undefined'.

@typescript-bot typescript-bot added the For Backlog Bug PRs that fix a backlog bug label Sep 28, 2021
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ghost commented Sep 28, 2021

CLA assistant check
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This was referenced Sep 28, 2021
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orta commented Sep 29, 2021

@typescript-bot perf test

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typescript-bot commented Sep 29, 2021 •
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Heya @orta, I've started to run the perf test suite on this PR at 82904f0. You can monitor the build here.

Update: The results are in!

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typescript-bot commented Sep 29, 2021

@orta
The results of the perf run you requested are in!

Here they are:

Comparison Report - main..46121

Metric main 46121 Delta Best Worst
Angular - node (v10.16.3, x64)
Memory used 354,128k (± 0.03%) 354,247k (± 0.02%) +119k (+ 0.03%) 354,118k 354,483k
Parse Time 1.95s (± 0.45%) 1.95s (± 0.32%) +0.00s (+ 0.10%) 1.94s 1.97s
Bind Time 0.84s (± 0.73%) 0.85s (± 0.68%) +0.01s (+ 0.71%) 0.83s 0.86s
Check Time 5.45s (± 0.36%) 5.49s (± 0.66%) +0.03s (+ 0.61%) 5.43s 5.58s
Emit Time 5.82s (± 0.31%) 5.86s (± 0.53%) +0.04s (+ 0.72%) 5.77s 5.91s
Total Time 14.06s (± 0.18%) 14.14s (± 0.43%) +0.09s (+ 0.60%) 14.00s 14.25s
Compiler-Unions - node (v10.16.3, x64)
Memory used 203,909k (± 0.03%) 203,867k (± 0.03%) -42k (- 0.02%) 203,770k 204,041k
Parse Time 0.79s (± 0.95%) 0.78s (± 0.51%) -0.01s (- 0.76%) 0.77s 0.79s
Bind Time 0.52s (± 1.00%) 0.52s (± 1.13%) +0.01s (+ 0.96%) 0.51s 0.53s
Check Time 7.85s (± 0.21%) 7.91s (± 0.47%) +0.05s (+ 0.69%) 7.84s 8.00s
Emit Time 2.46s (± 0.99%) 2.46s (± 0.80%) -0.00s (- 0.12%) 2.42s 2.50s
Total Time 11.62s (± 0.19%) 11.67s (± 0.33%) +0.05s (+ 0.40%) 11.57s 11.76s
Monaco - node (v10.16.3, x64)
Memory used 342,045k (± 0.04%) 342,077k (± 0.02%) +32k (+ 0.01%) 341,904k 342,263k
Parse Time 1.47s (± 0.81%) 1.48s (± 0.50%) +0.01s (+ 0.54%) 1.47s 1.50s
Bind Time 0.75s (± 0.60%) 0.76s (± 0.85%) +0.01s (+ 1.34%) 0.75s 0.78s
Check Time 5.42s (± 0.71%) 5.51s (± 0.71%) +0.09s (+ 1.73%) 5.42s 5.60s
Emit Time 3.21s (± 1.20%) 3.20s (± 0.89%) -0.01s (- 0.28%) 3.13s 3.28s
Total Time 10.85s (± 0.39%) 10.94s (± 0.36%) +0.10s (+ 0.89%) 10.86s 11.02s
TFS - node (v10.16.3, x64)
Memory used 304,654k (± 0.02%) 304,684k (± 0.02%) +30k (+ 0.01%) 304,551k 304,874k
Parse Time 1.19s (± 0.38%) 1.19s (± 0.56%) +0.01s (+ 0.42%) 1.17s 1.20s
Bind Time 0.71s (± 1.06%) 0.71s (± 1.06%) +0.01s (+ 1.13%) 0.70s 0.73s
Check Time 4.95s (± 0.55%) 5.00s (± 0.52%) +0.05s (+ 0.99%) 4.96s 5.08s
Emit Time 3.33s (± 1.45%) 3.32s (± 0.98%) -0.01s (- 0.27%) 3.27s 3.40s
Total Time 10.18s (± 0.64%) 10.23s (± 0.44%) +0.05s (+ 0.52%) 10.15s 10.33s
material-ui - node (v10.16.3, x64)
Memory used 472,282k (± 0.01%) 472,314k (± 0.01%) +33k (+ 0.01%) 472,229k 472,401k
Parse Time 1.76s (± 0.33%) 1.77s (± 0.47%) +0.01s (+ 0.34%) 1.75s 1.78s
Bind Time 0.66s (± 0.55%) 0.67s (± 0.89%) +0.01s (+ 1.52%) 0.65s 0.68s
Check Time 14.34s (± 0.36%) 14.46s (± 0.74%) +0.12s (+ 0.82%) 14.23s 14.72s
Emit Time 0.00s (± 0.00%) 0.00s (± 0.00%) 0.00s ( NaN%) 0.00s 0.00s
Total Time 16.76s (± 0.31%) 16.89s (± 0.68%) +0.13s (+ 0.78%) 16.62s 17.15s
Angular - node (v12.1.0, x64)
Memory used 331,821k (± 0.08%) 332,092k (± 0.02%) +272k (+ 0.08%) 332,001k 332,325k
Parse Time 1.93s (± 0.52%) 1.95s (± 0.81%) +0.02s (+ 1.25%) 1.91s 1.98s
Bind Time 0.81s (± 0.45%) 0.82s (± 0.63%) +0.00s (+ 0.61%) 0.81s 0.83s
Check Time 5.31s (± 0.63%) 5.35s (± 0.39%) +0.04s (+ 0.68%) 5.30s 5.39s
Emit Time 6.12s (± 0.71%) 6.20s (± 1.31%) +0.08s (+ 1.37%) 6.04s 6.37s
Total Time 14.18s (± 0.48%) 14.32s (± 0.49%) +0.15s (+ 1.03%) 14.18s 14.44s
Compiler-Unions - node (v12.1.0, x64)
Memory used 191,411k (± 0.05%) 191,372k (± 0.14%) -39k (- 0.02%) 190,307k 191,628k
Parse Time 0.78s (± 0.57%) 0.78s (± 0.93%) -0.00s (- 0.00%) 0.77s 0.80s
Bind Time 0.53s (± 0.65%) 0.53s (± 1.09%) +0.01s (+ 1.14%) 0.52s 0.55s
Check Time 7.41s (± 0.43%) 7.46s (± 0.57%) +0.05s (+ 0.65%) 7.37s 7.56s
Emit Time 2.45s (± 0.85%) 2.46s (± 0.86%) +0.01s (+ 0.37%) 2.41s 2.50s
Total Time 11.17s (± 0.35%) 11.23s (± 0.37%) +0.06s (+ 0.55%) 11.15s 11.33s
Monaco - node (v12.1.0, x64)
Memory used 325,133k (± 0.02%) 325,172k (± 0.02%) +39k (+ 0.01%) 324,961k 325,328k
Parse Time 1.46s (± 0.80%) 1.47s (± 0.71%) +0.02s (+ 1.10%) 1.44s 1.49s
Bind Time 0.73s (± 0.71%) 0.73s (± 1.15%) +0.00s (+ 0.27%) 0.72s 0.75s
Check Time 5.32s (± 0.58%) 5.34s (± 0.53%) +0.02s (+ 0.43%) 5.28s 5.40s
Emit Time 3.18s (± 0.51%) 3.20s (± 1.02%) +0.02s (+ 0.63%) 3.15s 3.31s
Total Time 10.67s (± 0.37%) 10.74s (± 0.53%) +0.07s (+ 0.64%) 10.62s 10.91s
TFS - node (v12.1.0, x64)
Memory used 289,362k (± 0.02%) 289,359k (± 0.02%) -4k (- 0.00%) 289,154k 289,474k
Parse Time 1.21s (± 0.51%) 1.20s (± 0.62%) -0.01s (- 0.50%) 1.19s 1.22s
Bind Time 0.69s (± 0.87%) 0.69s (± 1.09%) +0.01s (+ 1.17%) 0.68s 0.71s
Check Time 4.89s (± 0.71%) 4.92s (± 0.40%) +0.03s (+ 0.65%) 4.88s 4.97s
Emit Time 3.37s (± 1.01%) 3.38s (± 0.87%) +0.01s (+ 0.36%) 3.32s 3.45s
Total Time 10.16s (± 0.54%) 10.20s (± 0.47%) +0.04s (+ 0.43%) 10.10s 10.32s
material-ui - node (v12.1.0, x64)
Memory used 450,972k (± 0.01%) 450,981k (± 0.01%) +9k (+ 0.00%) 450,905k 451,042k
Parse Time 1.78s (± 0.38%) 1.77s (± 0.58%) -0.01s (- 0.39%) 1.75s 1.80s
Bind Time 0.64s (± 1.28%) 0.65s (± 0.53%) +0.00s (+ 0.47%) 0.64s 0.65s
Check Time 13.05s (± 0.69%) 13.03s (± 0.61%) -0.02s (- 0.11%) 12.89s 13.24s
Emit Time 0.00s (± 0.00%) 0.00s (± 0.00%) 0.00s ( NaN%) 0.00s 0.00s
Total Time 15.47s (± 0.56%) 15.45s (± 0.55%) -0.02s (- 0.13%) 15.30s 15.68s
Angular - node (v14.15.1, x64)
Memory used 330,443k (± 0.00%) 330,522k (± 0.01%) +80k (+ 0.02%) 330,443k 330,612k
Parse Time 1.95s (± 0.49%) 1.95s (± 0.33%) +0.00s (+ 0.10%) 1.93s 1.96s
Bind Time 0.86s (± 0.64%) 0.86s (± 0.55%) +0.00s (+ 0.12%) 0.85s 0.87s
Check Time 5.34s (± 0.78%) 5.38s (± 0.46%) +0.04s (+ 0.82%) 5.31s 5.43s
Emit Time 6.21s (± 0.83%) 6.21s (± 0.79%) -0.00s (- 0.03%) 6.06s 6.29s
Total Time 14.36s (± 0.62%) 14.40s (± 0.50%) +0.04s (+ 0.29%) 14.18s 14.51s
Compiler-Unions - node (v14.15.1, x64)
Memory used 193,176k (± 0.01%) 193,030k (± 0.10%) -146k (- 0.08%) 192,241k 193,199k
Parse Time 0.81s (± 0.62%) 0.81s (± 0.55%) +0.00s (+ 0.37%) 0.80s 0.82s
Bind Time 0.56s (± 1.04%) 0.55s (± 0.73%) -0.01s (- 1.44%) 0.54s 0.56s
Check Time 7.54s (± 0.58%) 7.60s (± 0.48%) +0.06s (+ 0.86%) 7.51s 7.69s
Emit Time 2.44s (± 1.11%) 2.43s (± 0.88%) -0.01s (- 0.33%) 2.40s 2.49s
Total Time 11.34s (± 0.48%) 11.40s (± 0.45%) +0.06s (+ 0.51%) 11.27s 11.53s
Monaco - node (v14.15.1, x64)
Memory used 323,982k (± 0.00%) 324,047k (± 0.00%) +65k (+ 0.02%) 324,020k 324,094k
Parse Time 1.51s (± 0.55%) 1.51s (± 0.72%) +0.01s (+ 0.40%) 1.49s 1.54s
Bind Time 0.75s (± 0.65%) 0.76s (± 1.17%) +0.01s (+ 1.33%) 0.75s 0.79s
Check Time 5.28s (± 0.51%) 5.32s (± 0.47%) +0.04s (+ 0.72%) 5.27s 5.38s
Emit Time 3.20s (± 0.76%) 3.23s (± 0.61%) +0.03s (+ 0.81%) 3.19s 3.27s
Total Time 10.75s (± 0.46%) 10.82s (± 0.29%) +0.08s (+ 0.74%) 10.78s 10.92s
TFS - node (v14.15.1, x64)
Memory used 288,326k (± 0.01%) 288,343k (± 0.01%) +17k (+ 0.01%) 288,299k 288,371k
Parse Time 1.23s (± 0.57%) 1.24s (± 0.66%) +0.01s (+ 0.65%) 1.22s 1.26s
Bind Time 0.73s (± 0.61%) 0.74s (± 0.65%) +0.01s (+ 1.24%) 0.73s 0.75s
Check Time 4.90s (± 0.37%) 4.95s (± 0.40%) +0.04s (+ 0.90%) 4.90s 5.00s
Emit Time 3.51s (± 1.37%) 3.49s (± 0.42%) -0.02s (- 0.66%) 3.45s 3.53s
Total Time 10.37s (± 0.50%) 10.41s (± 0.17%) +0.04s (+ 0.36%) 10.37s 10.45s
material-ui - node (v14.15.1, x64)
Memory used 449,286k (± 0.01%) 449,174k (± 0.04%) -112k (- 0.02%) 448,518k 449,285k
Parse Time 1.82s (± 0.53%) 1.82s (± 0.51%) +0.00s (+ 0.16%) 1.80s 1.84s
Bind Time 0.68s (± 0.00%) 0.70s (± 0.68%) +0.02s (+ 2.50%) 0.69s 0.71s
Check Time 13.12s (± 0.48%) 13.25s (± 0.60%) +0.13s (+ 0.98%) 13.08s 13.46s
Emit Time 0.00s (± 0.00%) 0.00s (± 0.00%) 0.00s ( NaN%) 0.00s 0.00s
Total Time 15.62s (± 0.44%) 15.77s (± 0.52%) +0.15s (+ 0.93%) 15.56s 15.96s
System
Machine Namets-ci-ubuntu
Platformlinux 4.4.0-210-generic
Architecturex64
Available Memory16 GB
Available Memory8 GB
CPUs4 × Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz
Hosts
  • node (v10.16.3, x64)
  • node (v12.1.0, x64)
  • node (v14.15.1, x64)
Scenarios
  • Angular - node (v10.16.3, x64)
  • Angular - node (v12.1.0, x64)
  • Angular - node (v14.15.1, x64)
  • Compiler-Unions - node (v10.16.3, x64)
  • Compiler-Unions - node (v12.1.0, x64)
  • Compiler-Unions - node (v14.15.1, x64)
  • Monaco - node (v10.16.3, x64)
  • Monaco - node (v12.1.0, x64)
  • Monaco - node (v14.15.1, x64)
  • TFS - node (v10.16.3, x64)
  • TFS - node (v12.1.0, x64)
  • TFS - node (v14.15.1, x64)
  • material-ui - node (v10.16.3, x64)
  • material-ui - node (v12.1.0, x64)
  • material-ui - node (v14.15.1, x64)
Benchmark Name Iterations
Current 46121 10
Baseline main 10

Developer Information:

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@easyrider
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easyrider commented Sep 29, 2021 •
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FYI: It looks like the performance impact is minimal
Total Time: ± 0.48%
#46121 (comment)

@easyrider easyrider force-pushed the issue-10530 branch 3 times, most recently from 0086086 to a660573 Compare September 30, 2021 20:03
@kitfit-dave
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kitfit-dave commented Feb 23, 2023

Is there anyone still looking at merging this? It does not seem to have been fixed elsewhere.

@jakebailey
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jakebailey commented Jul 25, 2024

The issue fixed by this PR was fixed in #57847 (for TS 5.5).

@jakebailey jakebailey closed this Jul 25, 2024
@microsoft microsoft locked as resolved and limited conversation to collaborators Oct 16, 2025
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Discriminant property type guard not applied with bracket notation

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