Duplication · guardian/commercial

Duplication Overall

8% duplication:

13,470 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
1,120 duplicated lines

69 duplicates

dependency graphs: 2D graph | 2D graph (with duplicates)... | 3D graph | 3D graph (with duplicates)...

Duplication per Extension

Duplication per Component (primary)

Duplication Between Components (50+ lines)

flowchart TB
    n0["bundle"]
    n1["core"]
    n0 ---|"385"| n1
    classDef default fill:#00b2ee,stroke:#ffffff,color:#000000;
    classDef highlighted fill:#00b2ee,stroke:#ffffff,color:#000000;
    linkStyle 0 stroke:#DC143CFF,stroke-width:10px

Download: Mermaid (.mmd) (open online Mermaid editor)

2D force graph | 3D force graph

Show more details on duplication between components...

From Component --> To Component	Duplicated Lines	File Pairs	Details
bundle (1%) --> core (9%)	385	3 file pairs	details...

Longest Duplicates

The list of 50 longest duplicates.

See data for all 69 duplicates...

Size	#	Folders	Files	Lines	Code
59	x 2	bundle/playwright/fixtures bundle/playwright/fixtures	front-with-thrasher-sponsor-fires-adv... front-with-thrasher-sponsor.ts	2:62 (50%) 2:62 (54%)	view
35	x 2	bundle/playwright/fixtures bundle/playwright/fixtures	front-with-thrasher-sponsor-fires-adv... front-with-thrasher-sponsor.ts	90:124 (29%) 77:111 (32%)	view
32	x 2	bundle/src/types core/src	global.ts types.ts	177:212 (9%) 288:323 (7%)	view
28	x 2	bundle/src/types core/src	global.ts types.ts	95:122 (8%) 111:138 (6%)	view
20	x 2	bundle/src/types core/src	global.ts types.ts	124:143 (5%) 142:161 (4%)	view
20	x 2	bundle/src/init/consented bundle/src/insert/spacefinder	static-ad-slots.ts liveblog-adverts.ts	34:54 (25%) 57:77 (10%)	view
19	x 2	bundle/src/types core/src	global.ts types.ts	260:278 (5%) 253:271 (4%)	view
17	x 2	bundle/src/types core/src	global.ts types.ts	146:163 (4%) 174:191 (3%)	view
16	x 2	core/src core/src	ad-sizes.ts ad-sizes.ts	221:236 (4%) 248:263 (4%)	view
14	x 2	.github .github	dependabot.yml dependabot.yml	53:66 (15%) 69:82 (15%)	view
14	x 2	bundle/src/lib/header-bidding/prebid bundle/src/lib/header-bidding/prebid	price-config.ts price-config.ts	41:57 (9%) 98:114 (9%)	view
12	x 2	bundle/src/types bundle/src/types	dates.ts dates.ts	2:13 (21%) 35:46 (21%)	view
12	x 2	bundle/src/insert/spacefinder bundle/src/insert/spacefinder	rules.ts rules.ts	220:239 (4%) 254:271 (4%)	view
11	x 2	bundle/src/lib/messenger bundle/src/lib/messenger	background.ts background.ts	190:200 (3%) 209:219 (3%)	view
11	x 2	bundle/src/types core/src	global.ts types.ts	233:243 (3%) 220:230 (2%)	view
10	x 2	bundle/src/types core/src	global.ts types.ts	47:56 (2%) 96:105 (2%)	view
10	x 2	bundle/src/types core/src	global.ts types.ts	214:223 (2%) 331:340 (2%)	view
10	x 2	bundle/src/types core/src	global.ts types.ts	243:253 (2%) 369:379 (2%)	view
10	x 2	bundle/src/insert/spacefinder bundle/src/insert/spacefinder	article.ts liveblog-adverts.ts	117:126 (4%) 57:66 (5%)	view
10	x 2	bundle/src/init/consented bundle/src/insert/spacefinder	static-ad-slots.ts article.ts	34:43 (12%) 117:126 (4%)	view
9	x 2	bundle/src/lib/header-bidding/prebid bundle/src/lib/header-bidding/prebid	price-config.ts price-config.ts	59:70 (5%) 116:127 (5%)	view
9	x 2	bundle/src/display bundle/src/display	lazy-load.ts lazy-load.ts	19:28 (13%) 43:51 (13%)	view
9	x 2	bundle/src/types core/src	global.ts types.ts	166:174 (2%) 76:84 (2%)	view
9	x 2	bundle/src/init bundle/src/init	ad-free.ts consented-advertising.ts	20:31 (52%) 50:61 (30%)	view
8	x 2	core/src core/src	ad-sizes.ts ad-sizes.ts	239:246 (2%) 339:346 (2%)	view
8	x 2	bundle/src/lib/header-bidding/prebid bundle/src/lib/header-bidding/prebid	price-config.ts price-config.ts	85:95 (5%) 139:149 (5%)	view
8	x 2	bundle/playwright/lib bundle/playwright/lib	cmp.ts cmp.ts	15:22 (17%) 45:52 (17%)	view
8	x 2	bundle/src/lib/header-bidding bundle/src/lib/header-bidding	slot-config.ts slot-config.ts	147:154 (3%) 184:191 (3%)	view
8	x 2	bundle/src/define bundle/src/define	define-slot.ts init-slot-ias.ts	21:28 (4%) 5:12 (8%)	view
8	x 2	bundle/src/init bundle/src/init	ad-free.ts consented-advertising.ts	12:19 (47%) 29:36 (26%)	view
7	x 2	core/src core/src	ad-sizes.ts ad-sizes.ts	227:233 (1%) 336:342 (1%)	view
7	x 2	core/src core/src	ad-sizes.ts ad-sizes.ts	239:245 (1%) 331:337 (1%)	view
7	x 2	core/src core/src	ad-sizes.ts ad-sizes.ts	254:260 (1%) 336:342 (1%)	view
7	x 2	core/src core/src	ad-sizes.ts ad-sizes.ts	331:337 (1%) 339:345 (1%)	view
7	x 2	bundle/src/lib/header-bidding/prebid bundle/src/lib/header-bidding/prebid	price-config.ts price-config.ts	7:15 (4%) 51:59 (4%)	view
7	x 2	bundle/src/lib/header-bidding/prebid bundle/src/lib/header-bidding/prebid	price-config.ts price-config.ts	24:32 (4%) 131:139 (4%)	view
7	x 2	bundle/src/lib/header-bidding/prebid bundle/src/lib/header-bidding/prebid	price-config.ts price-config.ts	58:65 (4%) 84:91 (4%)	view
7	x 2	bundle/src/lib/header-bidding/prebid bundle/src/lib/header-bidding/prebid	price-config.ts price-config.ts	75:83 (4%) 129:137 (4%)	view
7	x 2	bundle/src/lib/header-bidding/prebid bundle/src/lib/header-bidding/prebid	price-config.ts price-config.ts	115:122 (4%) 138:145 (4%)	view
7	x 2	bundle/src/lib/messenger bundle/src/lib/messenger	passback.ts passback.ts	245:253 (2%) 260:268 (2%)	view
7	x 2	bundle/src/define bundle/src/define	Advert.ts Advert.ts	205:211 (1%) 516:522 (1%)	view
7	x 2	bundle/src/lib/header-bidding/prebid/bidders bundle/src/lib/header-bidding/prebid/bidders	config.ts config.ts	281:287 (1%) 302:308 (1%)	view
7	x 2	bundle/src/lib/header-bidding/prebid/bidders bundle/src/lib/header-bidding/prebid/bidders	config.ts config.ts	281:287 (1%) 326:332 (1%)	view
7	x 2	bundle/src/lib/header-bidding/prebid/bidders bundle/src/lib/header-bidding/prebid/bidders	config.ts config.ts	281:287 (1%) 350:356 (1%)	view
7	x 2	bundle/src/lib/header-bidding/prebid/bidders bundle/src/lib/header-bidding/prebid/bidders	config.ts config.ts	302:308 (1%) 326:332 (1%)	view
7	x 2	bundle/src/lib/header-bidding/prebid/bidders bundle/src/lib/header-bidding/prebid/bidders	config.ts config.ts	302:308 (1%) 350:356 (1%)	view
7	x 2	bundle/src/lib/header-bidding/prebid/bidders bundle/src/lib/header-bidding/prebid/bidders	config.ts config.ts	326:332 (1%) 350:356 (1%)	view
7	x 2	bundle/playwright/lib bundle/playwright/lib	cmp.ts cmp.ts	16:22 (15%) 29:35 (15%)	view
7	x 2	bundle/playwright/lib bundle/playwright/lib	cmp.ts cmp.ts	29:35 (15%) 46:52 (15%)	view
7	x 2	bundle/src/types core/src	global.ts types.ts	281:287 (2%) 279:285 (1%)	view

Most Frequent Duplicates

The list of 17 most frequently found duplicates.

Size	#	Folders	Files	Lines	Code
6	x 4	bundle/src/lib/header-bidding/prebid/bidders bundle/src/lib/header-bidding/prebid/bidders bundle/src/lib/header-bidding/prebid/bidders bundle/src/lib/header-bidding/prebid/bidders	config.ts config.ts config.ts config.ts	281:286 (1%) 302:307 (1%) 326:331 (1%) 350:355 (1%)	view
6	x 4	bundle/src/lib/header-bidding/prebid/bidders bundle/src/lib/header-bidding/prebid/bidders bundle/src/lib/header-bidding/prebid/bidders bundle/src/lib/header-bidding/prebid/bidders	config.ts config.ts config.ts config.ts	282:287 (1%) 303:308 (1%) 327:332 (1%) 351:356 (1%)	view
6	x 4	bundle/playwright/fixtures bundle/playwright/fixtures bundle/playwright/fixtures bundle/playwright/fixtures	front-with-thrasher-sponsor-fires-adv... front-with-thrasher-sponsor.ts front-with-thrasher-sponsor.ts front-with-thrasher-sponsor-fires-adv...	99:104 (5%) 86:91 (5%) 96:101 (5%) 109:114 (5%)	view
6	x 4	bundle/src/lib/header-bidding/prebid bundle/src/lib/header-bidding/prebid bundle/src/lib/header-bidding/prebid bundle/src/lib/header-bidding/prebid	price-config.ts price-config.ts price-config.ts price-config.ts	59:65 (3%) 85:91 (3%) 116:122 (3%) 139:145 (3%)	view
6	x 3	bundle/src/insert/spacefinder bundle/src/insert/spacefinder bundle/src/init/consented	article.ts liveblog-adverts.ts static-ad-slots.ts	117:122 (2%) 57:62 (3%) 34:39 (7%)	view
6	x 3	core/src core/src core/src	ad-sizes.ts ad-sizes.ts ad-sizes.ts	230:235 (1%) 257:262 (1%) 315:320 (1%)	view
6	x 3	bundle/src/insert/spacefinder bundle/src/insert/spacefinder bundle/src/init/consented	article.ts liveblog-adverts.ts static-ad-slots.ts	120:125 (2%) 60:65 (3%) 37:42 (7%)	view
6	x 3	core/src core/src core/src	ad-sizes.ts ad-sizes.ts ad-sizes.ts	239:244 (1%) 331:336 (1%) 339:344 (1%)	view
6	x 3	bundle/src/insert/spacefinder bundle/src/insert/spacefinder bundle/src/init/consented	article.ts liveblog-adverts.ts static-ad-slots.ts	118:123 (2%) 58:63 (3%) 35:40 (7%)	view
6	x 3	core/src core/src core/src	ad-sizes.ts ad-sizes.ts ad-sizes.ts	240:245 (1%) 332:337 (1%) 340:345 (1%)	view
6	x 3	core/src core/src core/src	ad-sizes.ts ad-sizes.ts ad-sizes.ts	227:232 (1%) 254:259 (1%) 336:341 (1%)	view
6	x 3	bundle/src/insert/spacefinder bundle/src/insert/spacefinder bundle/src/init/consented	article.ts liveblog-adverts.ts static-ad-slots.ts	119:124 (2%) 59:64 (3%) 36:41 (7%)	view
6	x 3	bundle/playwright/lib bundle/playwright/lib bundle/playwright/lib	cmp.ts cmp.ts cmp.ts	17:22 (13%) 30:35 (13%) 47:52 (13%)	view
6	x 3	bundle/playwright/lib bundle/playwright/lib bundle/playwright/lib	cmp.ts cmp.ts cmp.ts	16:21 (13%) 29:34 (13%) 46:51 (13%)	view
6	x 3	core/src core/src core/src	ad-sizes.ts ad-sizes.ts ad-sizes.ts	228:233 (1%) 255:260 (1%) 337:342 (1%)	view
6	x 3	core/src core/src core/src	ad-sizes.ts ad-sizes.ts ad-sizes.ts	229:234 (1%) 256:261 (1%) 266:271 (1%)	view
6	x 3	bundle/src/insert/spacefinder bundle/src/insert/spacefinder bundle/src/init/consented	article.ts liveblog-adverts.ts static-ad-slots.ts	121:126 (2%) 61:66 (3%) 38:43 (7%)	view

About This Analysis

For duplication, we look at places in code where there are 6 or more lines of code that are exactly the same.
Before duplication is calculated, the code is cleaned to remove empty lines, comments, and frequently duplicated constructs such as imports.
You should aim at having as little as possible (<5%) of duplicated code as high-level of duplication can lead to maintenance difficulties, poor factoring, and logical contradictions.

Learn more...

To learn more about duplications and techniques for eliminating duplication, Sokrates recommends the following resources:

Avoid Repetition, MartinFlower.com (IEEE Software article)
Refactoring duplicated code, sourcemaking.com
Beck Design Rules, MartinFowler.com
DRY (Don't Repeat Yourself) Principle, Wikipedia
The Cut-and-Paste Programming Software Development Anti-Pattern, sourcemaking.com
Code Smells / Duplicated Code, Jeff Atwood, codinghorror.com:

"Duplicated code is the bane of software development. Stamp out duplication whenever possible. You should always be on the lookout for more subtle cases of near-duplication, too. Don't Repeat Yourself!"

Reducing Coupling, MartinFlower.com (IEEE Software article):

"There are several ways to describe coupling, but it boils down to this: If changing one module in a program requires changing another module, then coupling exists. ... Duplication always implies coupling, because changing one piece of duplicate code implies changing the other."