@boost/debug/mjs/createDebugger.mjs

Lightweight debugging and crash reporting.

import coreDebug from 'debug';
import { toArray } from '@boost/common';
import { env, color } from '@boost/internal';
import { debug } from './debug.mjs';

/**
 * Create and return a `Debugger` instance with the defined namespace.
 */
function createDebugger(namespace) {
  const globalNamespace = env('DEBUG_NAMESPACE');
  const namespaces = toArray(namespace);
  if (globalNamespace) {
    namespaces.unshift(globalNamespace);
  }
  const mainNamespace = namespaces.join(':');
  debug('New debugger created: %s %s', mainNamespace, env('DEBUG_VERBOSE') ? '(verbose enabled)' : '');
  const logger = coreDebug(mainNamespace);

  // `debug` doesn't support this on an individual namespace basis,
  // so we have to manually support it using this hacky regex.
  logger.disable = () => {
    debug('Debugger %s disabled', mainNamespace);
    process.env.DEBUG = (process.env.DEBUG ?? '').replace(new RegExp(`${logger.namespace}(:\\*)?`, 'u'), '').replace(/(^,)|(,$)/u, '').replace(',,', ',');
  };
  logger.enable = () => {
    debug('Debugger %s enabled', mainNamespace);
    coreDebug.enable(mainNamespace);
  };
  logger.invariant = (condition, message, pass, fail) => {
    logger('%s: %s', message, condition ? color.pass(pass) : color.fail(fail));
  };
  logger.verbose = (message, ...args) => {
    if (env('DEBUG_VERBOSE')) {
      logger(message, ...args);
    }
  };
  return logger;
}
export { createDebugger };
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