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snowplow/snowplow-javascript-tracker

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plugins/browser-plugin-web-vitals/src/utils.ts

Summary

Maintainability
A
35 mins
Test Coverage

Function attachWebVitalsPageListeners has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.
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export function attachWebVitalsPageListeners(callback: () => void) {
  // Safari does not fire "visibilitychange" on the tab close
  // So we have 2 options: lose Safari data, or lose LCP/CLS that depends on "visibilitychange" logic.
  // Current solution: if LCP/CLS supported, use `onHidden` otherwise, use `pagehide` to fire the callback in the end.
  //
Severity: Minor
Found in plugins/browser-plugin-web-vitals/src/utils.ts - About 35 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

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