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©2019 Wantedly, Inc.
Introduce RuboCop
In 8-year-old project
May 30, 2019 - Yuta Kamezaki
Meguro.rb #27
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©2019 Wantedly, Inc.
Yuta Kamezaki @ykamez
About me
Twitter: @ykamez_
2
Wantedly. Inc. / Engineer
2019ೖࣾɻ
Wantedly VisitͷάϩʔενʔϜॴଐ
ੳ͔ΒࢪࡦఏҊɺ࣮(αʔόʔ)·ͰΛ୲ɻ
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©2019 Wantedly, Inc.
3VCP$PQΛೖΕ͍ͨਓ
ಛʹɺطଘͷϓϩδΣΫτʹೖΕΔέʔε
ର
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©2019 Wantedly, Inc.
େมͩͬͨ͜ͱ
ͨ͜͠ͱ
ࠓ͢͜ͱ ࡀͷϓϩδΣΫτʹ3VCP$PQΛಋೖ͢Δ·Ͱ
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©2019 Wantedly, Inc.
w ͲͷϧʔϧΛ࠾༻͢Δ͔
w ͲͷΑ͏ʹͬͯΒ͏͔
w Ͳ͏͍͏ํͰӡ༻͍͔ͯ͘͠
େมͩͬͨ͜ͱ Ұൠతͳ
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©2019 Wantedly, Inc.
ྺ࢙͕ͯ͘ڊେ ੜ·Ε
ߦ: 166,566
େมͩͬͨ͜ͱ 8BOUFEMZͳΒͰͷ
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w ؒΈΜͳࣗ༝ͳελΠϧͰॻ͍͖ͯͨ
w طଘίʔυͷमਖ਼͕େม
w ؔऀ͕ଟ͍ˠίϯηϯαε͕औΓͮΒ͍
w ࠓߋײ ৺ཧతϋʔυϧ
େมͩͬͨ͜ͱ 8BOUFEMZͳΒͰͷ
ྺ࢙͕ͯ͘ڊେ
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σϑΥϧτͰΒͤͯΈͨ
ͲͷϧʔϧΛ࠾༻͢Δ͔
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ͲͷϧʔϧΛ࠾༻͢Δ͔
Inspecting 4062 files
4062 files inspected, 126547 offenses detected
σϑΥϧτͷϧʔϧͷ߹
126,547 offenses
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σϑΥϧτͷϧʔϧݫͦ͠͏
ͲͷϧʔϧΛ࠾༻͢Δ͔
ϧʔϧͱݱঢ়ʹେ͖ͳဃ͕͋Δ
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NFPXDPQͷϧʔϧ͕ྑ͍Β͍͠
ͲͷϧʔϧΛ࠾༻͢Δ͔
ผνʔϜͰಋೖ͓ͯ͠Γɺධ͕ྑ͔ͬͨ
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©2019 Wantedly, Inc.
3VCP$PQͷDPOpHͷHFN
https://github.com/sider/meowcop
ελΠϧͷࢦఠ͠ͳ͍
w ϓϩδΣΫτݻ༗ͷϧʔϧΛແޮԽ
https://blog-ja.sideci.com/entry/2016/10/03/171816
NFPXDPQͱ
→طଘProjectʹಋೖ͍͢͠
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©2019 Wantedly, Inc.
4062 files inspected, 12080 offenses detecte
ͲͷϧʔϧΛ࠾༻͢Δ͔ NFPXDPQͷϧʔϧͷ߹
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©2019 Wantedly, Inc.
4062 files inspected, 12080 offenses detecte
ͲͷϧʔϧΛ࠾༻͢Δ͔ NFPXDPQͷϧʔϧͷ߹
12,080 offenses
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©2019 Wantedly, Inc.
4062 files inspected, 12080 offenses detecte
126,547→12,080
ͲͷϧʔϧΛ࠾༻͢Δ͔ NFPXDPQͷϧʔϧͷ߹
ݱ࣮తͳဃ
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ͲͷϧʔϧΛ࠾༻͢Δ͔
w ͲͷΑ͏ʹͬͯΒ͏͔
w Ͳ͏͍͏ํͰӡ༻͍͔ͯ͘͠
େมͩͬͨ͜ͱ
✅
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୭Θͳ͔ͬͨΒҙຯ͕ͳ͍
ͲͷΑ͏ʹͬͯΒ͏͔
ڧ੍ྗ͕ͳ͍ͷܗ֚Խ͕ͪ͠
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©2019 Wantedly, Inc.
ͲͷΑ͏ʹͬͯΒ͏͔
+
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©2019 Wantedly, Inc.
1. reviewdog
3VCP$PQͷ݁ՌΛ13ʹίϝϯτͯ͘͠ΕΔ
IUUQTHJUIVCDPNSFWJFXEPHSFWJFXEPH
2. Travis CI
$*αʔϏεͰࣗಈνΣοΫ
ͲͷΑ͏ʹͬͯΒ͏͔
ˠΏΔΊͷӡ༻ࣗಈԽ $*མͱ͞ͳ͍
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ͲͷϧʔϧΛ࠾༻͢Δ͔
✅ͲͷΑ͏ʹͬͯΒ͏͔
w Ͳ͏͍͏ํͰӡ༻͍͔ͯ͘͠
େมͩͬͨ͜ͱ
✅
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©2019 Wantedly, Inc.
w طଘͷίʔυͷѻ͍
w ϧʔϧऔࣺબͷϓϩηε
Ͳ͏͍͏ํͰӡ༻͍͔ͯ͘͠
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طଘͷίʔυͷѻ͍
Ͳ͏͍͏ํͰӡ༻͍͔ͯ͘͠
ϧʔϧΛద༻ͨ͠Βɺطଘͷ$PEFमਖ਼ɻ
ϧʔϧͱ$PEFͷဃΛ͙ɻ
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ϧʔϧऔࣺબͷϓϩηε
Ͳ͏͍͏ํͰӡ༻͍͔ͯ͘͠
JTTVFͰٞˠϧʔϧ֬ఆˠө
JTTVFͰΦʔϓϯʹٞ͠ɺೲಘײΛ࣋ͨͤΔɻ
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ϧʔϧऔࣺબͷϓϩηε
Ͳ͏͍͏ํͰӡ༻͍͔ͯ͘͠
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©2019 Wantedly, Inc.
JTTVFͰΦʔϓϯʹٞ͠ɺೲಘײΛ࣋ͨͤΔɻ
ϧʔϧऔࣺબͷϓϩηε
Ͳ͏͍͏ํͰӡ༻͍͔ͯ͘͠
JTTVFͰٞˠϧʔϧ֬ఆˠө
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ͲͷϧʔϧΛ࠾༻͢Δ͔
✅ͲͷΑ͏ʹͬͯΒ͏͔
✅Ͳ͏͍͏ํͰӡ༻͍͔ͯ͘͠FUD
େมͩͬͨ͜ͱ
✅
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՝
େมͩͬͨ͜ͱͨ͜͠ͱ
ํ๏
•ؔऀͷଟ͞
•ڊେ͞
•8ͷྺ࢙
•ΏΔ͍ϧʔϧͰελʔτ
•CIͰࣗಈԽ(ڧ੍͠ͳ͍)
•Φʔϓϯͳٞ
•ӡ༻ํͷ໌֬Խ
• ͲͷϧʔϧΛ࠾༻͢Δ͔
• ͲͷΑ͏ʹͬͯΒ͏͔
• Ͳ͏͍͏ํͰӡ༻͍͔ͯ͘͠
Ұൠతͳ
Wantedlyݻ༗ͷ
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©2019 Wantedly, Inc.
ແࣄ3VCP$PQಋೖ
ӽ͠ͷಋೖ
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©2019 Wantedly, Inc.
ྑ͍
• ϨϏϡʔલʹϛεʹؾ͕͚ͭͨɻ
՝
• ϧʔϧͷऔࣺબ͕͍͠ɻ
• ϧʔϧΛܾΊΔϓϩηε͕ᐆດɻ
Ԡ
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©2019 Wantedly, Inc.
ϧʔϧऔࣺબͷϓϩηεޮԽ
• ೲಘײͷ͋ΔϧʔϧΛͲ͏ૉૣܾ͘Ί͍͔ͯ͘
ͲΕ͘Β͍ݫ͍͠ӡ༻ʹ͢Δ͔
• CIམͱ͢ͷ͔
ࣾͷϧʔϧڞ௨Խ ϚΠΫϩαʔϏε
Δ՝
ˠ·ͩ·ͩࢼߦࡨޡத
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ͷϓϩδΣΫτͰಋೖͰ͖Δ
• ઍཬͷಓҰา͔Β
ΏΔ࢝͘ΊͯΈΑ͏
·ͱΊ
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Thank you