disallow if
statements as the only statement in else
blocks (no-lonely-if)
The --fix
option on the command line can automatically fix some of the problems reported by this rule.
If an if
statement is the only statement in the else
block, it is often clearer to use an else if
form.
if (foo) {
// ...
} else {
if (bar) {
// ...
}
}
should be rewritten as
if (foo) {
// ...
} else if (bar) {
// ...
}
Rule Details
This rule disallows if
statements as the only statement in else
blocks.
Examples of incorrect code for this rule:
/*eslint no-lonely-if: "error"*/
if (condition) {
// ...
} else {
if (anotherCondition) {
// ...
}
}
if (condition) {
// ...
} else {
if (anotherCondition) {
// ...
} else {
// ...
}
}
Examples of correct code for this rule:
/*eslint no-lonely-if: "error"*/
if (condition) {
// ...
} else if (anotherCondition) {
// ...
}
if (condition) {
// ...
} else if (anotherCondition) {
// ...
} else {
// ...
}
if (condition) {
// ...
} else {
if (anotherCondition) {
// ...
}
doSomething();
}
When Not To Use It
Disable this rule if the code is clearer without requiring the else if
form.
Version
This rule was introduced in ESLint 0.6.0.