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scripts/jest/matchers/toWarnDev.js

Summary

Maintainability
C
1 day
Test Coverage

Function createMatcherFor has a Cognitive Complexity of 35 (exceeds 5 allowed). Consider refactoring.
Open

const createMatcherFor = consoleMethod =>
  function matcher(callback, expectedMessages) {
    if (__DEV__) {
      // Warn about incorrect usage of matcher.
      if (typeof expectedMessages === 'string') {
Severity: Minor
Found in scripts/jest/matchers/toWarnDev.js - About 5 hrs 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"

Further reading

Function matcher has 71 lines of code (exceeds 25 allowed). Consider refactoring.
Open

  function matcher(callback, expectedMessages) {
    if (__DEV__) {
      // Warn about incorrect usage of matcher.
      if (typeof expectedMessages === 'string') {
        expectedMessages = [expectedMessages];
Severity: Major
Found in scripts/jest/matchers/toWarnDev.js - About 2 hrs to fix

    Function consoleSpy has 26 lines of code (exceeds 25 allowed). Consider refactoring.
    Open

          const consoleSpy = message => {
        const normalizedMessage = normalizeCodeLocInfo(message);

        for (let index = 0; index < expectedMessages.length; index++) {
          const expectedMessage = expectedMessages[index];
    Severity: Minor
    Found in scripts/jest/matchers/toWarnDev.js - About 1 hr to fix

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