noDuplicateClassMembers
Diagnostic Category: lint/suspicious/noDuplicateClassMembers
Since: v1.0.0
Sources:
- Same as:
no-dupe-class-members
- Same as:
@typescript-eslint/no-dupe-class-members
Description
Section titled “Description”Disallow duplicate class members.
If there are declarations of the same name among class members, the last declaration overwrites other declarations silently. It can cause unexpected behaviours.
Examples
Section titled “Examples”Invalid
Section titled “Invalid”class Foo { bar() { } bar() { }}
code-block.js:3:3 lint/suspicious/noDuplicateClassMembers ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
✖ Duplicate class member name “bar”
1 │ class Foo {
2 │ bar() { }
> 3 │ bar() { }
│ ^^^^^^^^^
4 │ }
5 │
class Foo { bar() { } get bar() { }}
code-block.js:3:3 lint/suspicious/noDuplicateClassMembers ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
✖ Duplicate class member name “bar”
1 │ class Foo {
2 │ bar() { }
> 3 │ get bar() { }
│ ^^^^^^^^^^^^^
4 │ }
5 │
class Foo { bar; bar() { }}
code-block.js:3:3 lint/suspicious/noDuplicateClassMembers ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
✖ Duplicate class member name “bar”
1 │ class Foo {
2 │ bar;
> 3 │ bar() { }
│ ^^^^^^^^^
4 │ }
5 │
class Foo { static bar() { } static bar() { }}
code-block.js:3:3 lint/suspicious/noDuplicateClassMembers ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
✖ Duplicate class member name “bar”
1 │ class Foo {
2 │ static bar() { }
> 3 │ static bar() { }
│ ^^^^^^^^^^^^^^^^
4 │ }
5 │
class Foo { bar() { } qux() { }}
class Foo { set bar(value) { } get bar() { }}
class Foo { bar; qux;}
class Foo { bar; qux() { }}
class Foo { static bar() { } bar() { }}
How to configure
Section titled “How to configure”{ "linter": { "rules": { "suspicious": { "noDuplicateClassMembers": "error" } } }}