no-unused-class-component-members
Rule category
Correctness.
What it does
Warns unused class component methods and properties.
Examples
Failing
import React from "react";
class class ExampleExample extends React.class React.Component<P = {}, S = {}, SS = any>Component {
Example.handleClick(): voidhandleClick() {} // Unused
Example.render(): nullrender() {
return null;
}
}Passing
import React from "react";
class class ExampleExample extends React.class React.Component<P = {}, S = {}, SS = any>Component {
static Example.getDerivedStateFromError(error: React.ErrorInfo): {
hasError: boolean;
}getDerivedStateFromError(error: React.ErrorInfoerror: React.interface React.ErrorInfoErrorInfo) {
return { hasError: booleanhasError: true };
}
Example.action(): voidaction() {}
Example.componentDidMount(): voidCalled immediately after a component is mounted. Setting state here will trigger re-rendering.componentDidMount() {
this.Example.action(): voidaction();
}
Example.render(): nullrender() {
return null;
}
}