linters/eslint-rules/no-used-underscore-variables
ESLint rule: no-used-underscore-variables
Reports an error when a parameter or local variable with a _ prefix is actually referenced in the function body. The _ prefix convention signals “this identifier is intentionally unused” — if it IS used, the prefix is misleading and should be removed.
Variables
Section titled “Variables”| Variable | Description |
|---|---|
| MESSAGE_ID | Message ID reported when a variable carries a _ prefix (signalling unused) but is actually used. |
| noUsedUnderscoreVariables | ESLint rule disallowing _-prefixed parameters and local variables that are actually used, since the prefix advertises them as unused. |