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Showing content from https://eslint.org/docs/latest/rules/no-nested-ternary below:

no-nested-ternary - ESLint - Pluggable JavaScript Linter

Disallow nested ternary expressions

This rule is currently frozen and is not accepting feature requests.

Nesting ternary expressions can make code more difficult to understand.

const foo = bar ? baz : qux === quxx ? bing : bam;
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The no-nested-ternary rule disallows nested ternary expressions.

Examples of incorrect code for this rule:

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:

const thing = foo ? bar : foobar;

let otherThing;

if (foo) {
  otherThing = bar;
} else if (baz === qux) {
  otherThing = quxx;
} else {
  otherThing = foobar;
}
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This rule was introduced in ESLint v0.2.0.

• Rule source
• Tests source

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