Sonarqube: Is it possible to adapt duplication metric for javascript code?

Question

At the moment the duplication metric for JavaScript Code in SonarQube code is defined as followed: “There should be at least 100 successive and duplicated tokens. Those tokens should be spread at least on 10 lines of code.”

Is there a way to change the nummer of tokens and the number of lines? Since I want to have 5 lines.

Answer 1

Yes, you should put this line in your sonar-project.properties file.

sonar.cpd.js.minimumLines=5

See https://docs.sonarqube.org/display/SONAR/Analysis+Parameters#AnalysisParameters-Duplications :

A piece of code is considered as duplicated as soon as there are at least 100 successive and duplicated tokens (can be overridden with property sonar.cpd.${language}.minimumTokens) spread on at least 10 lines of code (can be overridden with property sonar.cpd.${language}.minimumLines)