Duplication · guardian/commercial-canaries

Duplication Overall

35% duplication:

970 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
348 duplicated lines

22 duplicates

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

Duplication per Extension

Duplication per Component (primary)

Longest Duplicates

The list of 22 longest duplicates.

See data for all 22 duplicates...

Size	#	Folders	Files	Lines	Code
29	x 2	src src	cmp_aus.js cmp_ccpa.js	86:118 (22%) 82:114 (23%)	view
23	x 2	src src	cmp_ccpa.js cmp_tcfv2.js	85:110 (18%) 88:113 (15%)	view
23	x 2	src src	cmp_aus.js cmp_tcfv2.js	89:114 (17%) 88:113 (15%)	view
21	x 2	src src	cmp_ccpa.js cmp_tcfv2.js	26:54 (16%) 29:57 (14%)	view
21	x 2	src src	cmp_aus.js cmp_ccpa.js	125:148 (16%) 120:143 (16%)	view
20	x 2	src src	cmp_aus.js cmp_tcfv2.js	22:50 (15%) 24:52 (13%)	view
16	x 2	src src	cmp_aus.js cmp_ccpa.js	27:50 (12%) 26:49 (12%)	view
16	x 2	src src	cmp_aus.js cmp_ccpa.js	64:80 (12%) 63:79 (12%)	view
15	x 2	src src	cmp_aus.js cmp_ccpa.js	1:15 (11%) 1:15 (12%)	view
12	x 2	src src	cmp_ccpa.js cmp_tcfv2.js	4:15 (9%) 5:16 (8%)	view
12	x 2	src src	cmp_aus.js cmp_tcfv2.js	4:15 (9%) 5:16 (8%)	view
10	x 2	src src	cmp_aus.js cmp_ccpa.js	52:62 (7%) 51:61 (8%)	view
10	x 2	src src/utils	cmp_tcfv2.js adverts.js	3:12 (6%) 225:234 (5%)	view
9	x 2	src src	cmp_ccpa.js cmp_tcfv2.js	133:143 (7%) 156:166 (6%)	view
9	x 2	src src	cmp_aus.js cmp_tcfv2.js	138:148 (6%) 156:166 (6%)	view
8	x 2	src src/utils	cmp_aus.js adverts.js	4:11 (6%) 227:234 (4%)	view
8	x 2	src src	cmp_aus.js cmp_ccpa.js	17:24 (6%) 17:24 (6%)	view
8	x 2	src src/utils	cmp_ccpa.js adverts.js	4:11 (6%) 227:234 (4%)	view
7	x 2	src/utils src/utils	adverts.js adverts.js	181:188 (3%) 194:201 (3%)	view
7	x 2	.github .github	dependabot.yml dependabot.yml	33:39 (12%) 42:48 (12%)	view
7	x 2	src src	cmp_ccpa.js cmp_tcfv2.js	67:74 (5%) 66:73 (4%)	view
7	x 2	src src	cmp_aus.js cmp_tcfv2.js	68:75 (5%) 66:73 (4%)	view

Most Frequent Duplicates

The list of 42 most frequently found duplicates.

Size	#	Folders	Files	Lines	Code
6	x 4	src src/utils src src	cmp_aus.js adverts.js cmp_tcfv2.js cmp_ccpa.js	4:9 (4%) 227:232 (3%) 5:10 (4%) 4:9 (4%)	view
6	x 4	src src/utils src src	cmp_aus.js adverts.js cmp_tcfv2.js cmp_ccpa.js	6:11 (4%) 229:234 (3%) 7:12 (4%) 6:11 (4%)	view
6	x 4	src src/utils src src	cmp_aus.js adverts.js cmp_tcfv2.js cmp_ccpa.js	5:10 (4%) 228:233 (3%) 6:11 (4%) 5:10 (4%)	view
6	x 3	src src src	cmp_ccpa.js cmp_tcfv2.js cmp_aus.js	41:49 (4%) 44:52 (4%) 42:50 (4%)	view
6	x 3	src src src	cmp_ccpa.js cmp_tcfv2.js cmp_aus.js	31:39 (4%) 34:42 (4%) 32:40 (4%)	view
6	x 3	src src src	cmp_aus.js cmp_tcfv2.js cmp_ccpa.js	104:109 (4%) 103:108 (4%) 100:105 (4%)	view
6	x 3	src src src	cmp_ccpa.js cmp_tcfv2.js cmp_aus.js	28:36 (4%) 31:39 (4%) 29:37 (4%)	view
6	x 3	src src src	cmp_aus.js cmp_tcfv2.js cmp_ccpa.js	68:74 (4%) 66:72 (4%) 67:73 (4%)	view
6	x 3	src src src	cmp_aus.js cmp_tcfv2.js cmp_ccpa.js	10:15 (4%) 11:16 (4%) 10:15 (4%)	view
6	x 3	src src src	cmp_ccpa.js cmp_tcfv2.js cmp_aus.js	38:46 (4%) 41:49 (4%) 39:47 (4%)	view
6	x 3	src src src	cmp_ccpa.js cmp_tcfv2.js cmp_aus.js	27:35 (4%) 30:38 (4%) 28:36 (4%)	view
6	x 3	src src src	cmp_aus.js cmp_tcfv2.js cmp_ccpa.js	100:106 (4%) 99:105 (4%) 96:102 (4%)	view
6	x 3	src src src	cmp_ccpa.js cmp_tcfv2.js cmp_aus.js	35:44 (4%) 38:47 (4%) 36:45 (4%)	view
6	x 3	src src src	cmp_aus.js cmp_tcfv2.js cmp_ccpa.js	98:104 (4%) 97:103 (4%) 94:100 (4%)	view
6	x 3	src src src	cmp_aus.js cmp_tcfv2.js cmp_ccpa.js	89:94 (4%) 88:93 (4%) 85:90 (4%)	view
6	x 3	src src src	cmp_aus.js cmp_tcfv2.js cmp_ccpa.js	93:99 (4%) 92:98 (4%) 89:95 (4%)	view
6	x 3	src src src	cmp_ccpa.js cmp_tcfv2.js cmp_aus.js	103:109 (4%) 106:112 (4%) 107:113 (4%)	view
6	x 3	src src src	cmp_aus.js cmp_tcfv2.js cmp_ccpa.js	97:102 (4%) 96:101 (4%) 93:98 (4%)	view
6	x 3	src src src	cmp_aus.js cmp_tcfv2.js cmp_ccpa.js	94:100 (4%) 93:99 (4%) 90:96 (4%)	view
6	x 3	src src src	cmp_aus.js cmp_tcfv2.js cmp_ccpa.js	101:107 (4%) 100:106 (4%) 97:103 (4%)	view
6	x 3	src src src	cmp_ccpa.js cmp_tcfv2.js cmp_aus.js	26:32 (4%) 29:35 (4%) 27:33 (4%)	view
6	x 3	src src src	cmp_ccpa.js cmp_tcfv2.js cmp_aus.js	137:143 (4%) 160:166 (4%) 142:148 (4%)	view
6	x 3	src src src	cmp_ccpa.js cmp_tcfv2.js cmp_aus.js	32:41 (4%) 35:44 (4%) 33:42 (4%)	view
6	x 3	src src src	cmp_aus.js cmp_tcfv2.js cmp_ccpa.js	7:12 (4%) 8:13 (4%) 7:12 (4%)	view
6	x 3	src src src	cmp_ccpa.js cmp_tcfv2.js cmp_aus.js	29:38 (4%) 32:41 (4%) 30:39 (4%)	view
6	x 3	src src src	cmp_ccpa.js cmp_tcfv2.js cmp_aus.js	39:47 (4%) 42:50 (4%) 40:48 (4%)	view
6	x 3	src src src	cmp_aus.js cmp_tcfv2.js cmp_ccpa.js	90:95 (4%) 89:94 (4%) 86:91 (4%)	view
6	x 3	src src src	cmp_aus.js cmp_tcfv2.js cmp_ccpa.js	105:111 (4%) 104:110 (4%) 101:107 (4%)	view
6	x 3	src src src	cmp_aus.js cmp_tcfv2.js cmp_ccpa.js	8:13 (4%) 9:14 (4%) 8:13 (4%)	view
6	x 3	src src src	cmp_aus.js cmp_tcfv2.js cmp_ccpa.js	69:75 (4%) 67:73 (4%) 68:74 (4%)	view
6	x 3	src src src	cmp_aus.js cmp_tcfv2.js cmp_ccpa.js	92:98 (4%) 91:97 (4%) 88:94 (4%)	view
6	x 3	src src src	cmp_aus.js cmp_tcfv2.js cmp_ccpa.js	95:101 (4%) 94:100 (4%) 91:97 (4%)	view
6	x 3	src src src	cmp_aus.js cmp_tcfv2.js cmp_ccpa.js	106:112 (4%) 105:111 (4%) 102:108 (4%)	view
6	x 3	src src src	cmp_ccpa.js cmp_tcfv2.js cmp_aus.js	134:140 (4%) 157:163 (4%) 139:145 (4%)	view
6	x 3	src src src	cmp_aus.js cmp_tcfv2.js cmp_ccpa.js	91:97 (4%) 90:96 (4%) 87:93 (4%)	view
6	x 3	src src src	cmp_aus.js cmp_tcfv2.js cmp_ccpa.js	9:14 (4%) 10:15 (4%) 9:14 (4%)	view
6	x 3	src src src	cmp_aus.js cmp_tcfv2.js cmp_ccpa.js	99:105 (4%) 98:104 (4%) 95:101 (4%)	view
6	x 3	src src src	cmp_ccpa.js cmp_tcfv2.js cmp_aus.js	133:139 (4%) 156:162 (4%) 138:144 (4%)	view
6	x 3	src src src	cmp_ccpa.js cmp_tcfv2.js cmp_aus.js	104:110 (4%) 107:113 (4%) 108:114 (4%)	view
6	x 3	src src src	cmp_ccpa.js cmp_tcfv2.js cmp_aus.js	36:45 (4%) 39:48 (4%) 37:46 (4%)	view
6	x 3	src src src	cmp_ccpa.js cmp_tcfv2.js cmp_aus.js	135:141 (4%) 158:164 (4%) 140:146 (4%)	view
6	x 3	src src src	cmp_aus.js cmp_tcfv2.js cmp_ccpa.js	102:108 (4%) 101:107 (4%) 98:104 (4%)	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."