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/**
* @license
* Copyright 2025 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
import React, { useState, useEffect, Key } from 'react';
import { Box, Text } from 'ink';
import util from 'util';
interface ConsoleMessage {
id: Key;
type: 'log' | 'warn' | 'error' | 'debug';
content: string;
}
// Using a module-level counter for unique IDs.
// This ensures IDs are unique across messages.
let messageIdCounter = 0;
interface ConsoleOutputProps {
debugMode: boolean;
}
export const ConsoleOutput: React.FC<ConsoleOutputProps> = ({ debugMode }) => {
const [messages, setMessages] = useState<ConsoleMessage[]>([]);
useEffect(() => {
const originalConsoleLog = console.log;
const originalConsoleWarn = console.warn;
const originalConsoleError = console.error;
const originalConsoleDebug = console.debug;
const formatArgs = (args: unknown[]): string => util.format(...args);
const addMessage = (
type: 'log' | 'warn' | 'error' | 'debug',
args: unknown[],
) => {
setMessages((prevMessages) => [
...prevMessages,
{
id: `console-msg-${messageIdCounter++}`,
type,
content: formatArgs(args),
},
]);
};
// It's patching time
console.log = (...args: unknown[]) => addMessage('log', args);
console.warn = (...args: unknown[]) => addMessage('warn', args);
console.error = (...args: unknown[]) => addMessage('error', args);
console.debug = (...args: unknown[]) => addMessage('debug', args);
return () => {
console.log = originalConsoleLog;
console.warn = originalConsoleWarn;
console.error = originalConsoleError;
console.debug = originalConsoleDebug;
};
}, []);
return (
<Box flexDirection="column">
{messages.map((msg) => {
if (msg.type === 'debug' && !debugMode) {
return null;
}
const textProps: { color?: string } = {};
let prefix = '';
switch (msg.type) {
case 'warn':
textProps.color = 'yellow';
prefix = 'WARN: ';
break;
case 'error':
textProps.color = 'red';
prefix = 'ERROR: ';
break;
case 'debug':
textProps.color = 'gray';
prefix = 'DEBUG: ';
break;
case 'log':
default:
prefix = 'LOG: ';
break;
}
return (
<Box key={msg.id}>
<Text {...textProps}>
{prefix}
{msg.content}
</Text>
</Box>
);
})}
</Box>
);
};
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