no-nested-ternary

Disallow nested ternary expressions

Nesting ternary expressions can make code more difficult to understand.

const foo = bar ? baz : qux === quxx ? bing : bam;
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Rule Details

The no-nested-ternary rule disallows nested ternary expressions.

Examples of incorrect code for this rule:

/*eslint no-nested-ternary: "error"*/

const thing = foo ? bar : baz === qux ? quxx : foobar;

foo ? baz === qux ? quxx() : foobar() : bar();
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Examples of correct code for this rule:

/*eslint no-nested-ternary: "error"*/

const thing = foo ? bar : foobar;

let otherThing;

if (foo) {
  otherThing = bar;
} else if (baz === qux) {
  otherThing = quxx;
} else {
  otherThing = foobar;
}
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Related Rules

• no-ternary
• no-unneeded-ternary

Version

This rule was introduced in ESLint v0.2.0.

Resources

• Rule source
• Tests source