noConfusingLabels (since v12.0.0)
Disallow labeled statements that are not loops.
Labeled statements in JavaScript are used in conjunction with break and continue to control flow around multiple loops. Their use for other statements is suspicious and unfamiliar.
Source: https://eslint.org/docs/latest/rules/no-labels
Examples
Invalid
label: f();nursery/noConfusingLabels.js:1:1 lint/nursery/noConfusingLabels ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
✖ Unexpected label.
> 1 │ label: f();
│ ^^^^^
2 │
ℹ Only loops should be labeled.
The use of labels for other statements is suspicious and unfamiliar.
label: {
f();
break label;
}nursery/noConfusingLabels.js:1:1 lint/nursery/noConfusingLabels ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
✖ Unexpected label.
> 1 │ label: {
│ ^^^^^
2 │ f();
3 │ break label;
ℹ Only loops should be labeled.
The use of labels for other statements is suspicious and unfamiliar.
label: if (a) {
f()
break label;
}nursery/noConfusingLabels.js:1:1 lint/nursery/noConfusingLabels ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
✖ Unexpected label.
> 1 │ label: if (a) {
│ ^^^^^
2 │ f()
3 │ break label;
ℹ Only loops should be labeled.
The use of labels for other statements is suspicious and unfamiliar.
label: switch (a) {
case 0:
break label;
}nursery/noConfusingLabels.js:1:1 lint/nursery/noConfusingLabels ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
✖ Unexpected label.
> 1 │ label: switch (a) {
│ ^^^^^
2 │ case 0:
3 │ break label;
ℹ Only loops should be labeled.
The use of labels for other statements is suspicious and unfamiliar.
Valid
outer: while (a) {
while(b) {
break outer;
}
}