Duplication · guardian/fulfilment-lambdas

Duplication Overall

2,739 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
228 duplicated lines

Duplication per Extension

Duplication per Component (primary)

Longest Duplicates

The list of 14 longest duplicates.

Size	#	Folders	Files	Lines	Code
17	x 2	src/weekly src/weekly	query.ts query.ts	37:53 (14%) 102:118 (14%)	view
15	x 2	src/homedelivery src/weekly	export.ts export.ts	110:128 (5%) 44:62 (6%)	view
13	x 2	ROOT ROOT	mjs eslint.config.mjs eslint.config.mjs	7:19 (21%) 34:46 (21%)	view
9	x 2	src/lib src/lib	Zuora.ts Zuora.ts	100:109 (6%) 137:146 (6%)	view
8	x 2	cdk/lib cdk/lib	fulfilment-lambdas.ts fulfilment-lambdas.ts	523:530 (1%) 546:553 (1%)	view
8	x 2	src/homedelivery src/weekly	export.ts export.ts	307:315 (3%) 261:269 (3%)	view
8	x 2	src/homedelivery src/weekly	export.ts export.ts	319:326 (3%) 273:280 (3%)	view
7	x 2	cdk/lib cdk/lib	fulfilment-lambdas.ts fulfilment-lambdas.ts	231:238 (1%) 261:268 (1%)	view
7	x 2	cdk/lib cdk/lib	fulfilment-lambdas.ts fulfilment-lambdas.ts	343:349 (1%) 358:364 (1%)	view
7	x 2	cdk/lib cdk/lib	fulfilment-lambdas.ts fulfilment-lambdas.ts	601:607 (1%) 672:678 (1%)	view
6	x 2	cdk/lib cdk/lib	fulfilment-lambdas.ts fulfilment-lambdas.ts	592:597 (1%) 648:653 (1%)	view
6	x 2	src/homedelivery src/weekly	export.ts export.ts	153:171 (2%) 92:111 (2%)	view
6	x 2	src/homedelivery src/weekly	query.ts query.ts	23:28 (8%) 44:49 (5%)	view
6	x 2	src/homedelivery src/weekly	query.ts query.ts	23:28 (8%) 109:114 (5%)	view

Most Frequent Duplicates

The list of 1 most frequently found duplicates.

Size	#	Folders	Files	Lines	Code
6	x 3	src/homedelivery src/weekly src/weekly	query.ts query.ts query.ts	23:28 (8%) 44:49 (5%) 109:114 (5%)	view

Duplicated Units

The list of top 1 duplicated units.

Size	#	Folders	Files	Lines	Code
8	x 2	src/homedelivery src/weekly	export.ts export.ts	307:316 261:270	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!"

"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."