prefer-ternary.md

Prefer the ternary operator over if-else for assigning a value. (prefer-ternary)

When the content of an if block is a single assignment, and its else block also has a single assignment to the same variable, the if block and the else block become very similar and contain code duplication. An alternative is to use a single assignment of the result of a ternary operator.

Rule Details

This rule is aimed to flag cases in which an if/else pair could be replaced with a single assignment with a ternary operator.

The following patterns are considered problems:

if (b) y = 1
else y = 2

if (b) {
  y = f1()
} else {
  y = f2()
}

The following patterns are not considered problems:

y = b ? 1 : 2

y = b ? f1() : f2()

Version

This rule was introduced in eslint-plugin-wix-editor 1.0.0.