var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __export = (target, all) => {
  for (var name in all)
    __defProp(target, name, { get: all[name], enumerable: true });
};
var __copyProps = (to, from, except, desc) => {
  if (from && typeof from === "object" || typeof from === "function") {
    for (let key of __getOwnPropNames(from))
      if (!__hasOwnProp.call(to, key) && key !== except)
        __defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
  }
  return to;
};
var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
var debug_exports = {};
__export(debug_exports, {
  default: () => debug_default
});
module.exports = __toCommonJS(debug_exports);
var import_log = require("./log.js");
const debugEnvVariable = typeof process !== "undefined" && process.env && process.env.DEBUG || void 0;
let enabledString;
let enabledNamespaces = [];
let skippedNamespaces = [];
const debuggers = [];
if (debugEnvVariable) {
  enable(debugEnvVariable);
}
const debugObj = Object.assign(
  (namespace) => {
    return createDebugger(namespace);
  },
  {
    enable,
    enabled,
    disable,
    log: import_log.log
  }
);
function enable(namespaces) {
  enabledString = namespaces;
  enabledNamespaces = [];
  skippedNamespaces = [];
  const namespaceList = namespaces.split(",").map((ns) => ns.trim());
  for (const ns of namespaceList) {
    if (ns.startsWith("-")) {
      skippedNamespaces.push(ns.substring(1));
    } else {
      enabledNamespaces.push(ns);
    }
  }
  for (const instance of debuggers) {
    instance.enabled = enabled(instance.namespace);
  }
}
function enabled(namespace) {
  if (namespace.endsWith("*")) {
    return true;
  }
  for (const skipped of skippedNamespaces) {
    if (namespaceMatches(namespace, skipped)) {
      return false;
    }
  }
  for (const enabledNamespace of enabledNamespaces) {
    if (namespaceMatches(namespace, enabledNamespace)) {
      return true;
    }
  }
  return false;
}
function namespaceMatches(namespace, patternToMatch) {
  if (patternToMatch.indexOf("*") === -1) {
    return namespace === patternToMatch;
  }
  let pattern = patternToMatch;
  if (patternToMatch.indexOf("**") !== -1) {
    const patternParts = [];
    let lastCharacter = "";
    for (const character of patternToMatch) {
      if (character === "*" && lastCharacter === "*") {
        continue;
      } else {
        lastCharacter = character;
        patternParts.push(character);
      }
    }
    pattern = patternParts.join("");
  }
  let namespaceIndex = 0;
  let patternIndex = 0;
  const patternLength = pattern.length;
  const namespaceLength = namespace.length;
  let lastWildcard = -1;
  let lastWildcardNamespace = -1;
  while (namespaceIndex < namespaceLength && patternIndex < patternLength) {
    if (pattern[patternIndex] === "*") {
      lastWildcard = patternIndex;
      patternIndex++;
      if (patternIndex === patternLength) {
        return true;
      }
      while (namespace[namespaceIndex] !== pattern[patternIndex]) {
        namespaceIndex++;
        if (namespaceIndex === namespaceLength) {
          return false;
        }
      }
      lastWildcardNamespace = namespaceIndex;
      namespaceIndex++;
      patternIndex++;
      continue;
    } else if (pattern[patternIndex] === namespace[namespaceIndex]) {
      patternIndex++;
      namespaceIndex++;
    } else if (lastWildcard >= 0) {
      patternIndex = lastWildcard + 1;
      namespaceIndex = lastWildcardNamespace + 1;
      if (namespaceIndex === namespaceLength) {
        return false;
      }
      while (namespace[namespaceIndex] !== pattern[patternIndex]) {
        namespaceIndex++;
        if (namespaceIndex === namespaceLength) {
          return false;
        }
      }
      lastWildcardNamespace = namespaceIndex;
      namespaceIndex++;
      patternIndex++;
      continue;
    } else {
      return false;
    }
  }
  const namespaceDone = namespaceIndex === namespace.length;
  const patternDone = patternIndex === pattern.length;
  const trailingWildCard = patternIndex === pattern.length - 1 && pattern[patternIndex] === "*";
  return namespaceDone && (patternDone || trailingWildCard);
}
function disable() {
  const result = enabledString || "";
  enable("");
  return result;
}
function createDebugger(namespace) {
  const newDebugger = Object.assign(debug, {
    enabled: enabled(namespace),
    destroy,
    log: debugObj.log,
    namespace,
    extend
  });
  function debug(...args) {
    if (!newDebugger.enabled) {
      return;
    }
    if (args.length > 0) {
      args[0] = `${namespace} ${args[0]}`;
    }
    newDebugger.log(...args);
  }
  debuggers.push(newDebugger);
  return newDebugger;
}
function destroy() {
  const index = debuggers.indexOf(this);
  if (index >= 0) {
    debuggers.splice(index, 1);
    return true;
  }
  return false;
}
function extend(namespace) {
  const newDebugger = createDebugger(`${this.namespace}:${namespace}`);
  newDebugger.log = this.log;
  return newDebugger;
}
var debug_default = debugObj;
//# sourceMappingURL=debug.js.map
