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codeql/javascript/ql/src/Declarations/TooManyParameters.ql
2018-08-02 17:53:23 +01:00

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/**
* @name Function with too many parameters
* @description Functions with many parameters are hard to read and hard to use.
* @kind problem
* @problem.severity recommendation
* @id js/too-many-parameters
* @tags testability
* readability
* @precision high
*/
import javascript
import semmle.javascript.RestrictedLocations
from Function f
where not f.inExternsFile() and
f.getNumParameter() > 7 and
// exclude AMD modules
not exists (AMDModuleDefinition m | f = m.getFactoryNode().(DataFlow::FunctionNode).getAstNode())
select (FirstLineOf)f, capitalize(f.describe()) + " has too many parameters (" + f.getNumParameter() + ")."