diff --git a/packages/eslint-plugin/src/util/collectUnusedVariables.ts b/packages/eslint-plugin/src/util/collectUnusedVariables.ts
index 8ec63de10dc6..518a696911b7 100644
--- a/packages/eslint-plugin/src/util/collectUnusedVariables.ts
+++ b/packages/eslint-plugin/src/util/collectUnusedVariables.ts
@@ -439,6 +439,8 @@ function isExported(variable: TSESLint.Scope.Variable): boolean {
});
}
+const LOGICAL_ASSIGNMENT_OPERATORS = new Set(['&&=', '||=', '??=']);
+
/**
* Determines if the variable is used.
* @param variable The variable to check.
@@ -701,6 +703,7 @@ function isUsedVariable(variable: TSESLint.Scope.Variable): boolean {
ref.isRead() && // in RHS of an assignment for itself. e.g. `a = a + 1`
// self update. e.g. `a += 1`, `a++`
((parent.type === AST_NODE_TYPES.AssignmentExpression &&
+ !LOGICAL_ASSIGNMENT_OPERATORS.has(parent.operator) &&
grandparent.type === AST_NODE_TYPES.ExpressionStatement &&
parent.left === id) ||
(parent.type === AST_NODE_TYPES.UpdateExpression &&
diff --git a/packages/eslint-plugin/tests/rules/no-unused-vars/no-unused-vars.test.ts b/packages/eslint-plugin/tests/rules/no-unused-vars/no-unused-vars.test.ts
index 636e2fe8d2c1..baed3954060c 100644
--- a/packages/eslint-plugin/tests/rules/no-unused-vars/no-unused-vars.test.ts
+++ b/packages/eslint-plugin/tests/rules/no-unused-vars/no-unused-vars.test.ts
@@ -1099,6 +1099,18 @@ interface Foo {
bar: string;
}
`,
+ `
+let foo = 1;
+foo ??= 2;
+ `,
+ `
+let foo = 1;
+foo &&= 2;
+ `,
+ `
+let foo = 1;
+foo ||= 2;
+ `,
],
invalid: [
@@ -1844,5 +1856,23 @@ const Foo = 'bar';
},
],
},
+ {
+ code: `
+let foo = 1;
+foo += 1;
+ `,
+ errors: [
+ {
+ messageId: 'unusedVar',
+ line: 3,
+ column: 1,
+ data: {
+ varName: 'foo',
+ action: 'assigned a value',
+ additional: '',
+ },
+ },
+ ],
+ },
],
});
pFad - Phonifier reborn
Pfad - The Proxy pFad of © 2024 Garber Painting. All rights reserved.
Note: This service is not intended for secure transactions such as banking, social media, email, or purchasing. Use at your own risk. We assume no liability whatsoever for broken pages.
Alternative Proxies:
Alternative Proxy
pFad Proxy
pFad v3 Proxy
pFad v4 Proxy