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import type { Writable } from 'node:stream';
import debugPackage from 'debug';
import { type LogMessage, type LogWritable, getEventPrefix, levels } from './core.js';
type ConsoleStream = Writable & {
fd: 1 | 2;
};
export const nodeLogDestination: LogWritable<LogMessage> = {
write(event: LogMessage) {
let dest: ConsoleStream = process.stderr;
if (levels[event.level] < levels['error']) {
dest = process.stdout;
}
let trailingLine = event.newLine ? '\n' : '';
if (event.label === 'SKIP_FORMAT') {
dest.write(event.message + trailingLine);
} else {
dest.write(getEventPrefix(event) + ' ' + event.message + trailingLine);
}
return true;
},
};
const debuggers: Record<string, debugPackage.Debugger['log']> = {};
/**
* Emit a message only shown in debug mode.
* Astro (along with many of its dependencies) uses the `debug` package for debug logging.
* You can enable these logs with the `DEBUG=astro:*` environment variable.
* More info https://github.com/debug-js/debug#environment-variables
*/
function debug(type: string, ...messages: Array<any>) {
const namespace = `astro:${type}`;
debuggers[namespace] = debuggers[namespace] || debugPackage(namespace);
return debuggers[namespace](...messages);
}
// This is gross, but necessary since we are depending on globals.
(globalThis as any)._astroGlobalDebug = debug;
export function enableVerboseLogging() {
debugPackage.enable('astro:*,vite:*');
debug('cli', '--verbose flag enabled! Enabling: DEBUG="astro:*,vite:*"');
debug(
'cli',
'Tip: Set the DEBUG env variable directly for more control. Example: "DEBUG=astro:*,vite:* astro build".',
);
}
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