javascript / expert
Snippet
Object-Oriented Error Boundary with Inheritance and Stack Extraction
React Error Boundaries require Class Component OOP syntax as hook equivalents do not exist for catch lifecycle phases. Inheriting from React.Component enables stateful lifecycle management while parsing the error stack array into categorized telemetry objects.
snippet.js
javascript
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
import React, { Component } from 'react';export class BaseErrorBoundary extends Component {constructor(props) {super(props);this.state = { hasError: false, errorLog: [] };}static getDerivedStateFromError(error) {return { hasError: true };}componentDidCatch(error, errorInfo) {const formattedError = {message: error.message,stackFrames: error.stack ? error.stack.split('\n').slice(0, 3) : [],componentStack: errorInfo.componentStack};this.logTelemetry(formattedError);}logTelemetry(formattedError) {this.setState(prev => ({errorLog: prev.errorLog.concat(formattedError)}));}render() {if (this.state.hasError) {return this.props.fallback(this.state.errorLog);}return this.props.children;}}
react
Breakdown
1
export class BaseErrorBoundary extends Component {
Declares an object-oriented class component inheriting directly from React.Component.
2
stackFrames: error.stack ? error.stack.split('\n').slice(0, 3) : [],
Splits the multi-line callstack string into an array and extracts top frames for precise diagnostic logging.
3
errorLog: prev.errorLog.concat(formattedError)
Immutably appends the new formatted error payload to the historical errorLog array state.