apps.apple.com/shared/logger/node_modules/@sentry/utils/esm/logger.js

import { getGlobalSingleton, GLOBAL_OBJ } from './worldwide.js';

/** Prefix for logging strings */
const PREFIX = 'Sentry Logger ';

const CONSOLE_LEVELS = ['debug', 'info', 'warn', 'error', 'log', 'assert', 'trace'] ;

/**
 * Temporarily disable sentry console instrumentations.
 *
 * @param callback The function to run against the original `console` messages
 * @returns The results of the callback
 */
function consoleSandbox(callback) {
  if (!('console' in GLOBAL_OBJ)) {
    return callback();
  }

  const originalConsole = GLOBAL_OBJ.console ;
  const wrappedLevels = {};

  // Restore all wrapped console methods
  CONSOLE_LEVELS.forEach(level => {
    // TODO(v7): Remove this check as it's only needed for Node 6
    const originalWrappedFunc =
      originalConsole[level] && (originalConsole[level] ).__sentry_original__;
    if (level in originalConsole && originalWrappedFunc) {
      wrappedLevels[level] = originalConsole[level] ;
      originalConsole[level] = originalWrappedFunc ;
    }
  });

  try {
    return callback();
  } finally {
    // Revert restoration to wrapped state
    Object.keys(wrappedLevels).forEach(level => {
      originalConsole[level] = wrappedLevels[level ];
    });
  }
}

function makeLogger() {
  let enabled = false;
  const logger = {
    enable: () => {
      enabled = true;
    },
    disable: () => {
      enabled = false;
    },
  };

  if ((typeof __SENTRY_DEBUG__ === 'undefined' || __SENTRY_DEBUG__)) {
    CONSOLE_LEVELS.forEach(name => {
      // eslint-disable-next-line @typescript-eslint/no-explicit-any
      logger[name] = (...args) => {
        if (enabled) {
          consoleSandbox(() => {
            GLOBAL_OBJ.console[name](`${PREFIX}[${name}]:`, ...args);
          });
        }
      };
    });
  } else {
    CONSOLE_LEVELS.forEach(name => {
      logger[name] = () => undefined;
    });
  }

  return logger ;
}

// Ensure we only have a single logger instance, even if multiple versions of @sentry/utils are being used
let logger;
if ((typeof __SENTRY_DEBUG__ === 'undefined' || __SENTRY_DEBUG__)) {
  logger = getGlobalSingleton('logger', makeLogger);
} else {
  logger = makeLogger();
}

export { CONSOLE_LEVELS, consoleSandbox, logger };
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