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switch-case-spacing

Enforce consistent spacing and break placement in switch cases.

Targeted pattern scope​

This rule inspects each SwitchCase body and enforces a specific structure for non-empty cases.

For non-empty cases, it expects:

  • the first consequent statement starts on a later line than case ...:; and
  • the case ends with break, unless the case body starts with a block statement.

What this rule reports​

This rule reports switch case bodies that do not match the expected spacing/break style.

Why this rule exists​

This rule enforces a strict legacy switch layout policy to keep case bodies visually consistent.

❌ Incorrect​

switch (x) {
 case 1:
  foo();
}

✅ Correct​

switch (x) {
 case 1: {
  foo();
 }
}

Deprecated​

Behavior and migration notes​

This rule is deprecated in favor of @stylistic/switch-colon-spacing.

It reports only and does not provide an autofix.

Options​

This rule has no options.

Status​

Use the Deprecated section above for lifecycle details.

Additional examples​

switch (status) {
 case "ok":
  doWork();
  break;
 // ❌ first statement is on same line as `case`

 case "done":
  doWork();
  break;
 // ✅ valid
}

ESLint flat config example​

import etcMisc from "eslint-plugin-etc-misc";

export default [
 {
  plugins: { "etc-misc": etcMisc },
  rules: {
   "etc-misc/switch-case-spacing": "error",
  },
 },
];

When not to use it​

Disable this rule if your switch formatting is handled by a different style policy.

Package documentation​

Rule catalog ID: R098

Further reading​

Adoption resources​

  • Start at warning level in CI, then move to error after cleanup.
  • Use focused codemods/autofix batches per package or directory.