eslint/default-case-last Style
What it does
Requires the default
clause in switch
statements to be the last one.
Why is this bad?
By convention and for readability, the default
clause should be the last one in a switch
. While it is legal to place it before or between case
clauses, doing so is confusing and may lead to unexpected "fall-through" behavior.
Options
No options available for this rule
Examples
Examples of incorrect code for this rule:
js
/* default-case-last: "error" */
switch (foo) {
default:
bar();
break;
case "a":
baz();
break;
}
switch (foo) {
case 1:
bar();
break;
default:
baz();
break;
case 2:
qux();
break;
}
Examples of correct code for this rule:
js
/* default-case-last: "error" */
switch (foo) {
case 1:
bar();
break;
case 2:
qux();
break;
default:
baz();
break;
}
switch (foo) {
case "x":
bar();
break;
case "y":
default:
baz();
break;
}
How to use
To enable this rule in the CLI or using the config file, you can use:
bash
oxlint --deny default-case-last
json
{
"rules": {
"default-case-last": "error"
}
}