52 lines
1.8 KiB
Plaintext
52 lines
1.8 KiB
Plaintext
== Why is this an issue?
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The ``++if...else++`` statement is used to make decisions based on the truthiness of a boolean expression, and the ``++if++`` block executes when the expression is truthy, while the ``++else++`` block executes when the expression is falsy.
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Wrapping a boolean expression in an ``++if...else++`` statement and returning ``++true++`` or ``++false++`` in the respective blocks is redundant and unnecessary. It can also make the code harder to maintain, as it adds unnecessary lines of code that need to be read and understood.
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[source,javascript,diff-id=1,diff-type=noncompliant]
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----
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if (expression) {
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return true;
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} else {
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return false;
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}
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----
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Simplify the code and return the boolean expression (or its negation) directly to make the code more concise and easier to read and maintain.
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[source,javascript,diff-id=1,diff-type=compliant]
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----
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return expression;
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----
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If the caller expects a boolean and the result of the expression is not a boolean, use double negation for proper conversion.
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[source,javascript,diff-id=1,diff-type=compliant]
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----
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return !!expression;
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----
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== Resources
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=== Documentation
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* MDN web docs - https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Boolean[Boolean]
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* MDN web docs - link:++https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/if...else++[``++if...else++``]
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* MDN web docs - link:++https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Logical_NOT#double_not_!!++[Double NOT (``++!!++``)]
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ifdef::env-github,rspecator-view[]
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'''
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== Implementation Specification
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(visible only on this page)
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include::../message.adoc[]
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'''
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== Comments And Links
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(visible only on this page)
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include::../comments-and-links.adoc[]
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endif::env-github,rspecator-view[]
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