logoESLint React
Rules

no-component-will-mount

Replaces usage of `componentWillMount` with `UNSAFE_componentWillMount`.

Full Name in eslint-plugin-react-x

react-x/no-component-will-mount

Full Name in @eslint-react/eslint-plugin

@eslint-react/no-component-will-mount

Features

🔄

Presets

x recommended recommended-typescript recommended-type-checked strict strict-typescript strict-type-checked

Rule Details

This API was renamed from componentWillMount to UNSAFE_componentWillMount. The old name has been deprecated. In a future major version of React, only the new name will work.

Common Violations

Invalid

import React from "react";

interface MyComponentProps {
  name: string;
}

class MyComponent extends React.Component<MyComponentProps> {
  componentWillMount() {
    // ...
  }
}

Valid

import React from "react";

interface MyComponentProps {
  name: string;
}

class MyComponent extends React.Component<MyComponentProps> {
  UNSAFE_componentWillMount() {
    // ...
  }
}

Resources

Further Reading

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