The code contains too many jump instructions that derive the control flow out of a finally structure

Why you should care

Using return, break, throw, and continue from a finally block overwrites similar statements from the suspended try and catch blocks.

How we detect

CAST Highlight counts one occurrence each time a jump statement (break, continue, return and throw) would force control flow to leave a finally block.

Bad Code

try {
catch(e) {
throw new Error('Something bad happened'); // Noncompliant

Good Code

function foo() {
try {
return 1; // We expect 1 to be returned
} catch(err) {
return 2; // Or 2 in cases of error



About CAST and Highlight’s Code Insights

Over the last 25 years, CAST has leveraged unique knowledge on software quality measurement by analyzing thousands of applications and billions of lines of code. Based on this experience and community standards on programming best practices, Highlight implements hundreds of code insights across 15+ technologies to calculate health factors of a software.