React Did Catch

see on npm

A simple component for React v.16 that catches javascript errors during rendering. Based on React Error Boundaries.

Usage:

import React from 'react';
import CatchError from 'react-did-catch';

class FailingComponent extends React.Component {
  state = {
    text: ['99', 'little', 'bugs', 'in', 'the', 'code'],
  };

  handleClick = () => {
    this.setState({ text: 5 });
  };

  render() {
    return (
      <div>
        <button onClick={this.handleClick}>cause error</button>
        <p>{this.state.text.join(' ')}</p>
      </div>
    );
  }
}

const SafeComponent = () => (
  <CatchError>
    <FailingComponent />
  </CatchError>
); 

Now if you click the button, CatchError will catch the error and by default render the error and stack-trace message.

Custom component with render prop:

const SafeComponent = () => (
  <CatchError 
    render={
      (error, info, browser) => <MyCustomComponent error={error} info={info} browser={browser} />
    }
  >
    <FailingComponent />
  </CatchError>
);

browser parameter is passed from detect-browser.

ErrorMessage component

You can extract component responsible for printing error and stack-trace. It requires, two props (error and info) props from componentDidCatch hook.

import CatchError, { ErrorMessage } from 'react-did-catch';
const SafeComponent = () => (
  <CatchError
    render={(error, info, browser) => {
      reportTheError(error, info, browser);
      return (
        <div>
          <p>Houston! We have problem.</p>
          <ErrorMessage error={error} info={info} />
        <div>
      );
    }}
  >
    <FailingComponent />
  </CatchError>
);

Styling ErrorMessage component

Currently you can override default minimalistic styling using customStyles prop object with keys like:

• container
• errorMessage
• componentStack
• browserInfo
• arrow

const customStyles = {
  arrow: {
    borderColor: 'transparent transparent red',
  },
  container: {
    border: '1px solid rgba(0,0,0,.1)',
    padding: '15px',
    width: '60%',
  },
  errorMessage: {
    textAlign: 'center',
  },
  componentStack: {
    color: 'red',
    marginTop: '10px',
    fontSize: '10px',
    padding: '10px',
    boxShadow: 'inset 0px 0px 10px 0px rgba(0,0,0,0.3)',
  },
  browserInfo: {
    color: 'gray',
  },
};
const SafeComponent = () => (
  <CatchError customStyles={customStyles}>
    <FailingComponent />
  </CatchError>
); 

Which will produce:

You can also pass styles directly to ErrorMessage:

<ErrorMessage error={error} info={info} customStyles={customStyles} />