'use strict';

var util = require('util');
var fs = require('fs');
var path = require('path');

function camelCase(str) {
  const isCamelCase = str !== str.toLowerCase() && str !== str.toUpperCase();
  if (!isCamelCase) {
    str = str.toLowerCase();
  }
  if (str.indexOf('-') === -1 && str.indexOf('_') === -1) {
    return str;
  } else {
    let camelcase = '';
    let nextChrUpper = false;
    const leadingHyphens = str.match(/^-+/);
    for (
      let i = leadingHyphens ? leadingHyphens[0].length : 0;
      i < str.length;
      i++
    ) {
      let chr = str.charAt(i);
      if (nextChrUpper) {
        nextChrUpper = false;
        chr = chr.toUpperCase();
      }
      if (i !== 0 && (chr === '-' || chr === '_')) {
        nextChrUpper = true;
      } else if (chr !== '-' && chr !== '_') {
        camelcase += chr;
      }
    }
    return camelcase;
  }
}
function decamelize(str, joinString) {
  const lowercase = str.toLowerCase();
  joinString = joinString || '-';
  let notCamelcase = '';
  for (let i = 0; i < str.length; i++) {
    const chrLower = lowercase.charAt(i);
    const chrString = str.charAt(i);
    if (chrLower !== chrString && i > 0) {
      notCamelcase += `${joinString}${lowercase.charAt(i)}`;
    } else {
      notCamelcase += chrString;
    }
  }
  return notCamelcase;
}
function looksLikeNumber(x) {
  if (x === null || x === undefined) return false;
  if (typeof x === 'number') return true;
  if (/^0x[0-9a-f]+$/i.test(x)) return true;
  if (/^0[^.]/.test(x)) return false;
  return /^[-]?(?:\d+(?:\.\d*)?|\.\d+)(e[-+]?\d+)?$/.test(x);
}

function tokenizeArgString(argString) {
  if (Array.isArray(argString)) {
    return argString.map((e) => (typeof e !== 'string' ? e + '' : e));
  }
  argString = argString.trim();
  let i = 0;
  let prevC = null;
  let c = null;
  let opening = null;
  const args = [];
  for (let ii = 0; ii < argString.length; ii++) {
    prevC = c;
    c = argString.charAt(ii);
    if (c === ' ' && !opening) {
      if (!(prevC === ' ')) {
        i++;
      }
      continue;
    }
    if (c === opening) {
      opening = null;
    } else if ((c === "'" || c === '"') && !opening) {
      opening = c;
    }
    if (!args[i]) args[i] = '';
    args[i] += c;
  }
  return args;
}

var DefaultValuesForTypeKey;
(function (DefaultValuesForTypeKey) {
  DefaultValuesForTypeKey['BOOLEAN'] = 'boolean';
  DefaultValuesForTypeKey['STRING'] = 'string';
  DefaultValuesForTypeKey['NUMBER'] = 'number';
  DefaultValuesForTypeKey['ARRAY'] = 'array';
})(DefaultValuesForTypeKey || (DefaultValuesForTypeKey = {}));

let mixin;
class YargsParser {
  constructor(_mixin) {
    mixin = _mixin;
  }
  parse(argsInput, options) {
    const opts = Object.assign(
      {
        alias: undefined,
        array: undefined,
        boolean: undefined,
        config: undefined,
        configObjects: undefined,
        configuration: undefined,
        coerce: undefined,
        count: undefined,
        default: undefined,
        envPrefix: undefined,
        narg: undefined,
        normalize: undefined,
        string: undefined,
        number: undefined,
        __: undefined,
        key: undefined,
      },
      options
    );
    const args = tokenizeArgString(argsInput);
    const aliases = combineAliases(
      Object.assign(Object.create(null), opts.alias)
    );
    const configuration = Object.assign(
      {
        'boolean-negation': true,
        'camel-case-expansion': true,
        'combine-arrays': false,
        'dot-notation': true,
        'duplicate-arguments-array': true,
        'flatten-duplicate-arrays': true,
        'greedy-arrays': true,
        'halt-at-non-option': false,
        'nargs-eats-options': false,
        'negation-prefix': 'no-',
        'parse-numbers': true,
        'parse-positional-numbers': true,
        'populate--': false,
        'set-placeholder-key': false,
        'short-option-groups': true,
        'strip-aliased': false,
        'strip-dashed': false,
        'unknown-options-as-args': false,
      },
      opts.configuration
    );
    const defaults = Object.assign(Object.create(null), opts.default);
    const configObjects = opts.configObjects || [];
    const envPrefix = opts.envPrefix;
    const notFlagsOption = configuration['populate--'];
    const notFlagsArgv = notFlagsOption ? '--' : '_';
    const newAliases = Object.create(null);
    const defaulted = Object.create(null);
    const __ = opts.__ || mixin.format;
    const flags = {
      aliases: Object.create(null),
      arrays: Object.create(null),
      bools: Object.create(null),
      strings: Object.create(null),
      numbers: Object.create(null),
      counts: Object.create(null),
      normalize: Object.create(null),
      configs: Object.create(null),
      nargs: Object.create(null),
      coercions: Object.create(null),
      keys: [],
    };
    const negative = /^-([0-9]+(\.[0-9]+)?|\.[0-9]+)$/;
    const negatedBoolean = new RegExp(
      '^--' + configuration['negation-prefix'] + '(.+)'
    );
    []
      .concat(opts.array || [])
      .filter(Boolean)
      .forEach(function (opt) {
        const key = typeof opt === 'object' ? opt.key : opt;
        const assignment = Object.keys(opt)
          .map(function (key) {
            const arrayFlagKeys = {
              boolean: 'bools',
              string: 'strings',
              number: 'numbers',
            };
            return arrayFlagKeys[key];
          })
          .filter(Boolean)
          .pop();
        if (assignment) {
          flags[assignment][key] = true;
        }
        flags.arrays[key] = true;
        flags.keys.push(key);
      });
    []
      .concat(opts.boolean || [])
      .filter(Boolean)
      .forEach(function (key) {
        flags.bools[key] = true;
        flags.keys.push(key);
      });
    []
      .concat(opts.string || [])
      .filter(Boolean)
      .forEach(function (key) {
        flags.strings[key] = true;
        flags.keys.push(key);
      });
    []
      .concat(opts.number || [])
      .filter(Boolean)
      .forEach(function (key) {
        flags.numbers[key] = true;
        flags.keys.push(key);
      });
    []
      .concat(opts.count || [])
      .filter(Boolean)
      .forEach(function (key) {
        flags.counts[key] = true;
        flags.keys.push(key);
      });
    []
      .concat(opts.normalize || [])
      .filter(Boolean)
      .forEach(function (key) {
        flags.normalize[key] = true;
        flags.keys.push(key);
      });
    if (typeof opts.narg === 'object') {
      Object.entries(opts.narg).forEach(([key, value]) => {
        if (typeof value === 'number') {
          flags.nargs[key] = value;
          flags.keys.push(key);
        }
      });
    }
    if (typeof opts.coerce === 'object') {
      Object.entries(opts.coerce).forEach(([key, value]) => {
        if (typeof value === 'function') {
          flags.coercions[key] = value;
          flags.keys.push(key);
        }
      });
    }
    if (typeof opts.config !== 'undefined') {
      if (Array.isArray(opts.config) || typeof opts.config === 'string') {
        []
          .concat(opts.config)
          .filter(Boolean)
          .forEach(function (key) {
            flags.configs[key] = true;
          });
      } else if (typeof opts.config === 'object') {
        Object.entries(opts.config).forEach(([key, value]) => {
          if (typeof value === 'boolean' || typeof value === 'function') {
            flags.configs[key] = value;
          }
        });
      }
    }
    extendAliases(opts.key, aliases, opts.default, flags.arrays);
    Object.keys(defaults).forEach(function (key) {
      (flags.aliases[key] || []).forEach(function (alias) {
        defaults[alias] = defaults[key];
      });
    });
    let error = null;
    checkConfiguration();
    let notFlags = [];
    const argv = Object.assign(Object.create(null), { _: [] });
    const argvReturn = {};
    for (let i = 0; i < args.length; i++) {
      const arg = args[i];
      const truncatedArg = arg.replace(/^-{3,}/, '---');
      let broken;
      let key;
      let letters;
      let m;
      let next;
      let value;
      if (arg !== '--' && isUnknownOptionAsArg(arg)) {
        pushPositional(arg);
      } else if (truncatedArg.match(/---+(=|$)/)) {
        pushPositional(arg);
        continue;
      } else if (
        arg.match(/^--.+=/) ||
        (!configuration['short-option-groups'] && arg.match(/^-.+=/))
      ) {
        m = arg.match(/^--?([^=]+)=([\s\S]*)$/);
        if (m !== null && Array.isArray(m) && m.length >= 3) {
          if (checkAllAliases(m[1], flags.arrays)) {
            i = eatArray(i, m[1], args, m[2]);
          } else if (checkAllAliases(m[1], flags.nargs) !== false) {
            i = eatNargs(i, m[1], args, m[2]);
          } else {
            setArg(m[1], m[2]);
          }
        }
      } else if (
        arg.match(negatedBoolean) &&
        configuration['boolean-negation']
      ) {
        m = arg.match(negatedBoolean);
        if (m !== null && Array.isArray(m) && m.length >= 2) {
          key = m[1];
          setArg(key, checkAllAliases(key, flags.arrays) ? [false] : false);
        }
      } else if (
        arg.match(/^--.+/) ||
        (!configuration['short-option-groups'] && arg.match(/^-[^-]+/))
      ) {
        m = arg.match(/^--?(.+)/);
        if (m !== null && Array.isArray(m) && m.length >= 2) {
          key = m[1];
          if (checkAllAliases(key, flags.arrays)) {
            i = eatArray(i, key, args);
          } else if (checkAllAliases(key, flags.nargs) !== false) {
            i = eatNargs(i, key, args);
          } else {
            next = args[i + 1];
            if (
              next !== undefined &&
              (!next.match(/^-/) || next.match(negative)) &&
              !checkAllAliases(key, flags.bools) &&
              !checkAllAliases(key, flags.counts)
            ) {
              setArg(key, next);
              i++;
            } else if (/^(true|false)$/.test(next)) {
              setArg(key, next);
              i++;
            } else {
              setArg(key, defaultValue(key));
            }
          }
        }
      } else if (arg.match(/^-.\..+=/)) {
        m = arg.match(/^-([^=]+)=([\s\S]*)$/);
        if (m !== null && Array.isArray(m) && m.length >= 3) {
          setArg(m[1], m[2]);
        }
      } else if (arg.match(/^-.\..+/) && !arg.match(negative)) {
        next = args[i + 1];
        m = arg.match(/^-(.\..+)/);
        if (m !== null && Array.isArray(m) && m.length >= 2) {
          key = m[1];
          if (
            next !== undefined &&
            !next.match(/^-/) &&
            !checkAllAliases(key, flags.bools) &&
            !checkAllAliases(key, flags.counts)
          ) {
            setArg(key, next);
            i++;
          } else {
            setArg(key, defaultValue(key));
          }
        }
      } else if (arg.match(/^-[^-]+/) && !arg.match(negative)) {
        letters = arg.slice(1, -1).split('');
        broken = false;
        for (let j = 0; j < letters.length; j++) {
          next = arg.slice(j + 2);
          if (letters[j + 1] && letters[j + 1] === '=') {
            value = arg.slice(j + 3);
            key = letters[j];
            if (checkAllAliases(key, flags.arrays)) {
              i = eatArray(i, key, args, value);
            } else if (checkAllAliases(key, flags.nargs) !== false) {
              i = eatNargs(i, key, args, value);
            } else {
              setArg(key, value);
            }
            broken = true;
            break;
          }
          if (next === '-') {
            setArg(letters[j], next);
            continue;
          }
          if (
            /[A-Za-z]/.test(letters[j]) &&
            /^-?\d+(\.\d*)?(e-?\d+)?$/.test(next) &&
            checkAllAliases(next, flags.bools) === false
          ) {
            setArg(letters[j], next);
            broken = true;
            break;
          }
          if (letters[j + 1] && letters[j + 1].match(/\W/)) {
            setArg(letters[j], next);
            broken = true;
            break;
          } else {
            setArg(letters[j], defaultValue(letters[j]));
          }
        }
        key = arg.slice(-1)[0];
        if (!broken && key !== '-') {
          if (checkAllAliases(key, flags.arrays)) {
            i = eatArray(i, key, args);
          } else if (checkAllAliases(key, flags.nargs) !== false) {
            i = eatNargs(i, key, args);
          } else {
            next = args[i + 1];
            if (
              next !== undefined &&
              (!/^(-|--)[^-]/.test(next) || next.match(negative)) &&
              !checkAllAliases(key, flags.bools) &&
              !checkAllAliases(key, flags.counts)
            ) {
              setArg(key, next);
              i++;
            } else if (/^(true|false)$/.test(next)) {
              setArg(key, next);
              i++;
            } else {
              setArg(key, defaultValue(key));
            }
          }
        }
      } else if (
        arg.match(/^-[0-9]$/) &&
        arg.match(negative) &&
        checkAllAliases(arg.slice(1), flags.bools)
      ) {
        key = arg.slice(1);
        setArg(key, defaultValue(key));
      } else if (arg === '--') {
        notFlags = args.slice(i + 1);
        break;
      } else if (configuration['halt-at-non-option']) {
        notFlags = args.slice(i);
        break;
      } else {
        pushPositional(arg);
      }
    }
    applyEnvVars(argv, true);
    applyEnvVars(argv, false);
    setConfig(argv);
    setConfigObjects();
    applyDefaultsAndAliases(argv, flags.aliases, defaults, true);
    applyCoercions(argv);
    if (configuration['set-placeholder-key']) setPlaceholderKeys(argv);
    Object.keys(flags.counts).forEach(function (key) {
      if (!hasKey(argv, key.split('.'))) setArg(key, 0);
    });
    if (notFlagsOption && notFlags.length) argv[notFlagsArgv] = [];
    notFlags.forEach(function (key) {
      argv[notFlagsArgv].push(key);
    });
    if (
      configuration['camel-case-expansion'] &&
      configuration['strip-dashed']
    ) {
      Object.keys(argv)
        .filter((key) => key !== '--' && key.includes('-'))
        .forEach((key) => {
          delete argv[key];
        });
    }
    if (configuration['strip-aliased']) {
      []
        .concat(...Object.keys(aliases).map((k) => aliases[k]))
        .forEach((alias) => {
          if (configuration['camel-case-expansion'] && alias.includes('-')) {
            delete argv[
              alias
                .split('.')
                .map((prop) => camelCase(prop))
                .join('.')
            ];
          }
          delete argv[alias];
        });
    }
    function pushPositional(arg) {
      const maybeCoercedNumber = maybeCoerceNumber('_', arg);
      if (
        typeof maybeCoercedNumber === 'string' ||
        typeof maybeCoercedNumber === 'number'
      ) {
        argv._.push(maybeCoercedNumber);
      }
    }
    function eatNargs(i, key, args, argAfterEqualSign) {
      let ii;
      let toEat = checkAllAliases(key, flags.nargs);
      toEat = typeof toEat !== 'number' || isNaN(toEat) ? 1 : toEat;
      if (toEat === 0) {
        if (!isUndefined(argAfterEqualSign)) {
          error = Error(__('Argument unexpected for: %s', key));
        }
        setArg(key, defaultValue(key));
        return i;
      }
      let available = isUndefined(argAfterEqualSign) ? 0 : 1;
      if (configuration['nargs-eats-options']) {
        if (args.length - (i + 1) + available < toEat) {
          error = Error(__('Not enough arguments following: %s', key));
        }
        available = toEat;
      } else {
        for (ii = i + 1; ii < args.length; ii++) {
          if (
            !args[ii].match(/^-[^0-9]/) ||
            args[ii].match(negative) ||
            isUnknownOptionAsArg(args[ii])
          )
            available++;
          else break;
        }
        if (available < toEat)
          error = Error(__('Not enough arguments following: %s', key));
      }
      let consumed = Math.min(available, toEat);
      if (!isUndefined(argAfterEqualSign) && consumed > 0) {
        setArg(key, argAfterEqualSign);
        consumed--;
      }
      for (ii = i + 1; ii < consumed + i + 1; ii++) {
        setArg(key, args[ii]);
      }
      return i + consumed;
    }
    function eatArray(i, key, args, argAfterEqualSign) {
      let argsToSet = [];
      let next = argAfterEqualSign || args[i + 1];
      const nargsCount = checkAllAliases(key, flags.nargs);
      if (checkAllAliases(key, flags.bools) && !/^(true|false)$/.test(next)) {
        argsToSet.push(true);
      } else if (
        isUndefined(next) ||
        (isUndefined(argAfterEqualSign) &&
          /^-/.test(next) &&
          !negative.test(next) &&
          !isUnknownOptionAsArg(next))
      ) {
        if (defaults[key] !== undefined) {
          const defVal = defaults[key];
          argsToSet = Array.isArray(defVal) ? defVal : [defVal];
        }
      } else {
        if (!isUndefined(argAfterEqualSign)) {
          argsToSet.push(processValue(key, argAfterEqualSign));
        }
        for (let ii = i + 1; ii < args.length; ii++) {
          if (
            (!configuration['greedy-arrays'] && argsToSet.length > 0) ||
            (nargsCount &&
              typeof nargsCount === 'number' &&
              argsToSet.length >= nargsCount)
          )
            break;
          next = args[ii];
          if (
            /^-/.test(next) &&
            !negative.test(next) &&
            !isUnknownOptionAsArg(next)
          )
            break;
          i = ii;
          argsToSet.push(processValue(key, next));
        }
      }
      if (
        typeof nargsCount === 'number' &&
        ((nargsCount && argsToSet.length < nargsCount) ||
          (isNaN(nargsCount) && argsToSet.length === 0))
      ) {
        error = Error(__('Not enough arguments following: %s', key));
      }
      setArg(key, argsToSet);
      return i;
    }
    function setArg(key, val) {
      if (/-/.test(key) && configuration['camel-case-expansion']) {
        const alias = key
          .split('.')
          .map(function (prop) {
            return camelCase(prop);
          })
          .join('.');
        addNewAlias(key, alias);
      }
      const value = processValue(key, val);
      const splitKey = key.split('.');
      setKey(argv, splitKey, value);
      if (flags.aliases[key]) {
        flags.aliases[key].forEach(function (x) {
          const keyProperties = x.split('.');
          setKey(argv, keyProperties, value);
        });
      }
      if (splitKey.length > 1 && configuration['dot-notation']) {
        (flags.aliases[splitKey[0]] || []).forEach(function (x) {
          let keyProperties = x.split('.');
          const a = [].concat(splitKey);
          a.shift();
          keyProperties = keyProperties.concat(a);
          if (!(flags.aliases[key] || []).includes(keyProperties.join('.'))) {
            setKey(argv, keyProperties, value);
          }
        });
      }
      if (
        checkAllAliases(key, flags.normalize) &&
        !checkAllAliases(key, flags.arrays)
      ) {
        const keys = [key].concat(flags.aliases[key] || []);
        keys.forEach(function (key) {
          Object.defineProperty(argvReturn, key, {
            enumerable: true,
            get() {
              return val;
            },
            set(value) {
              val = typeof value === 'string' ? mixin.normalize(value) : value;
            },
          });
        });
      }
    }
    function addNewAlias(key, alias) {
      if (!(flags.aliases[key] && flags.aliases[key].length)) {
        flags.aliases[key] = [alias];
        newAliases[alias] = true;
      }
      if (!(flags.aliases[alias] && flags.aliases[alias].length)) {
        addNewAlias(alias, key);
      }
    }
    function processValue(key, val) {
      if (
        typeof val === 'string' &&
        (val[0] === "'" || val[0] === '"') &&
        val[val.length - 1] === val[0]
      ) {
        val = val.substring(1, val.length - 1);
      }
      if (
        checkAllAliases(key, flags.bools) ||
        checkAllAliases(key, flags.counts)
      ) {
        if (typeof val === 'string') val = val === 'true';
      }
      let value =
        Array.isArray(val) ?
          val.map(function (v) {
            return maybeCoerceNumber(key, v);
          })
        : maybeCoerceNumber(key, val);
      if (
        checkAllAliases(key, flags.counts) &&
        (isUndefined(value) || typeof value === 'boolean')
      ) {
        value = increment();
      }
      if (
        checkAllAliases(key, flags.normalize) &&
        checkAllAliases(key, flags.arrays)
      ) {
        if (Array.isArray(val))
          value = val.map((val) => {
            return mixin.normalize(val);
          });
        else value = mixin.normalize(val);
      }
      return value;
    }
    function maybeCoerceNumber(key, value) {
      if (!configuration['parse-positional-numbers'] && key === '_')
        return value;
      if (
        !checkAllAliases(key, flags.strings) &&
        !checkAllAliases(key, flags.bools) &&
        !Array.isArray(value)
      ) {
        const shouldCoerceNumber =
          looksLikeNumber(value) &&
          configuration['parse-numbers'] &&
          Number.isSafeInteger(Math.floor(parseFloat(`${value}`)));
        if (
          shouldCoerceNumber ||
          (!isUndefined(value) && checkAllAliases(key, flags.numbers))
        ) {
          value = Number(value);
        }
      }
      return value;
    }
    function setConfig(argv) {
      const configLookup = Object.create(null);
      applyDefaultsAndAliases(configLookup, flags.aliases, defaults);
      Object.keys(flags.configs).forEach(function (configKey) {
        const configPath = argv[configKey] || configLookup[configKey];
        if (configPath) {
          try {
            let config = null;
            const resolvedConfigPath = mixin.resolve(mixin.cwd(), configPath);
            const resolveConfig = flags.configs[configKey];
            if (typeof resolveConfig === 'function') {
              try {
                config = resolveConfig(resolvedConfigPath);
              } catch (e) {
                config = e;
              }
              if (config instanceof Error) {
                error = config;
                return;
              }
            } else {
              config = mixin.require(resolvedConfigPath);
            }
            setConfigObject(config);
          } catch (ex) {
            if (ex.name === 'PermissionDenied') error = ex;
            else if (argv[configKey])
              error = Error(__('Invalid JSON config file: %s', configPath));
          }
        }
      });
    }
    function setConfigObject(config, prev) {
      Object.keys(config).forEach(function (key) {
        const value = config[key];
        const fullKey = prev ? prev + '.' + key : key;
        if (
          typeof value === 'object' &&
          value !== null &&
          !Array.isArray(value) &&
          configuration['dot-notation']
        ) {
          setConfigObject(value, fullKey);
        } else {
          if (
            !hasKey(argv, fullKey.split('.')) ||
            (checkAllAliases(fullKey, flags.arrays) &&
              configuration['combine-arrays'])
          ) {
            setArg(fullKey, value);
          }
        }
      });
    }
    function setConfigObjects() {
      if (typeof configObjects !== 'undefined') {
        configObjects.forEach(function (configObject) {
          setConfigObject(configObject);
        });
      }
    }
    function applyEnvVars(argv, configOnly) {
      if (typeof envPrefix === 'undefined') return;
      const prefix = typeof envPrefix === 'string' ? envPrefix : '';
      const env = mixin.env();
      Object.keys(env).forEach(function (envVar) {
        if (prefix === '' || envVar.lastIndexOf(prefix, 0) === 0) {
          const keys = envVar.split('__').map(function (key, i) {
            if (i === 0) {
              key = key.substring(prefix.length);
            }
            return camelCase(key);
          });
          if (
            ((configOnly && flags.configs[keys.join('.')]) || !configOnly) &&
            !hasKey(argv, keys)
          ) {
            setArg(keys.join('.'), env[envVar]);
          }
        }
      });
    }
    function applyCoercions(argv) {
      let coerce;
      const applied = new Set();
      Object.keys(argv).forEach(function (key) {
        if (!applied.has(key)) {
          coerce = checkAllAliases(key, flags.coercions);
          if (typeof coerce === 'function') {
            try {
              const value = maybeCoerceNumber(key, coerce(argv[key]));
              [].concat(flags.aliases[key] || [], key).forEach((ali) => {
                applied.add(ali);
                argv[ali] = value;
              });
            } catch (err) {
              error = err;
            }
          }
        }
      });
    }
    function setPlaceholderKeys(argv) {
      flags.keys.forEach((key) => {
        if (~key.indexOf('.')) return;
        if (typeof argv[key] === 'undefined') argv[key] = undefined;
      });
      return argv;
    }
    function applyDefaultsAndAliases(obj, aliases, defaults, canLog = false) {
      Object.keys(defaults).forEach(function (key) {
        if (!hasKey(obj, key.split('.'))) {
          setKey(obj, key.split('.'), defaults[key]);
          if (canLog) defaulted[key] = true;
          (aliases[key] || []).forEach(function (x) {
            if (hasKey(obj, x.split('.'))) return;
            setKey(obj, x.split('.'), defaults[key]);
          });
        }
      });
    }
    function hasKey(obj, keys) {
      let o = obj;
      if (!configuration['dot-notation']) keys = [keys.join('.')];
      keys.slice(0, -1).forEach(function (key) {
        o = o[key] || {};
      });
      const key = keys[keys.length - 1];
      if (typeof o !== 'object') return false;
      else return key in o;
    }
    function setKey(obj, keys, value) {
      let o = obj;
      if (!configuration['dot-notation']) keys = [keys.join('.')];
      keys.slice(0, -1).forEach(function (key) {
        key = sanitizeKey(key);
        if (typeof o === 'object' && o[key] === undefined) {
          o[key] = {};
        }
        if (typeof o[key] !== 'object' || Array.isArray(o[key])) {
          if (Array.isArray(o[key])) {
            o[key].push({});
          } else {
            o[key] = [o[key], {}];
          }
          o = o[key][o[key].length - 1];
        } else {
          o = o[key];
        }
      });
      const key = sanitizeKey(keys[keys.length - 1]);
      const isTypeArray = checkAllAliases(keys.join('.'), flags.arrays);
      const isValueArray = Array.isArray(value);
      let duplicate = configuration['duplicate-arguments-array'];
      if (!duplicate && checkAllAliases(key, flags.nargs)) {
        duplicate = true;
        if (
          (!isUndefined(o[key]) && flags.nargs[key] === 1) ||
          (Array.isArray(o[key]) && o[key].length === flags.nargs[key])
        ) {
          o[key] = undefined;
        }
      }
      if (value === increment()) {
        o[key] = increment(o[key]);
      } else if (Array.isArray(o[key])) {
        if (duplicate && isTypeArray && isValueArray) {
          o[key] =
            configuration['flatten-duplicate-arrays'] ?
              o[key].concat(value)
            : (Array.isArray(o[key][0]) ? o[key] : [o[key]]).concat([value]);
        } else if (
          !duplicate &&
          Boolean(isTypeArray) === Boolean(isValueArray)
        ) {
          o[key] = value;
        } else {
          o[key] = o[key].concat([value]);
        }
      } else if (o[key] === undefined && isTypeArray) {
        o[key] = isValueArray ? value : [value];
      } else if (
        duplicate &&
        !(
          o[key] === undefined ||
          checkAllAliases(key, flags.counts) ||
          checkAllAliases(key, flags.bools)
        )
      ) {
        o[key] = [o[key], value];
      } else {
        o[key] = value;
      }
    }
    function extendAliases(...args) {
      args.forEach(function (obj) {
        Object.keys(obj || {}).forEach(function (key) {
          if (flags.aliases[key]) return;
          flags.aliases[key] = [].concat(aliases[key] || []);
          flags.aliases[key].concat(key).forEach(function (x) {
            if (/-/.test(x) && configuration['camel-case-expansion']) {
              const c = camelCase(x);
              if (c !== key && flags.aliases[key].indexOf(c) === -1) {
                flags.aliases[key].push(c);
                newAliases[c] = true;
              }
            }
          });
          flags.aliases[key].concat(key).forEach(function (x) {
            if (
              x.length > 1 &&
              /[A-Z]/.test(x) &&
              configuration['camel-case-expansion']
            ) {
              const c = decamelize(x, '-');
              if (c !== key && flags.aliases[key].indexOf(c) === -1) {
                flags.aliases[key].push(c);
                newAliases[c] = true;
              }
            }
          });
          flags.aliases[key].forEach(function (x) {
            flags.aliases[x] = [key].concat(
              flags.aliases[key].filter(function (y) {
                return x !== y;
              })
            );
          });
        });
      });
    }
    function checkAllAliases(key, flag) {
      const toCheck = [].concat(flags.aliases[key] || [], key);
      const keys = Object.keys(flag);
      const setAlias = toCheck.find((key) => keys.includes(key));
      return setAlias ? flag[setAlias] : false;
    }
    function hasAnyFlag(key) {
      const flagsKeys = Object.keys(flags);
      const toCheck = [].concat(flagsKeys.map((k) => flags[k]));
      return toCheck.some(function (flag) {
        return Array.isArray(flag) ? flag.includes(key) : flag[key];
      });
    }
    function hasFlagsMatching(arg, ...patterns) {
      const toCheck = [].concat(...patterns);
      return toCheck.some(function (pattern) {
        const match = arg.match(pattern);
        return match && hasAnyFlag(match[1]);
      });
    }
    function hasAllShortFlags(arg) {
      if (arg.match(negative) || !arg.match(/^-[^-]+/)) {
        return false;
      }
      let hasAllFlags = true;
      let next;
      const letters = arg.slice(1).split('');
      for (let j = 0; j < letters.length; j++) {
        next = arg.slice(j + 2);
        if (!hasAnyFlag(letters[j])) {
          hasAllFlags = false;
          break;
        }
        if (
          (letters[j + 1] && letters[j + 1] === '=') ||
          next === '-' ||
          (/[A-Za-z]/.test(letters[j]) &&
            /^-?\d+(\.\d*)?(e-?\d+)?$/.test(next)) ||
          (letters[j + 1] && letters[j + 1].match(/\W/))
        ) {
          break;
        }
      }
      return hasAllFlags;
    }
    function isUnknownOptionAsArg(arg) {
      return configuration['unknown-options-as-args'] && isUnknownOption(arg);
    }
    function isUnknownOption(arg) {
      arg = arg.replace(/^-{3,}/, '--');
      if (arg.match(negative)) {
        return false;
      }
      if (hasAllShortFlags(arg)) {
        return false;
      }
      const flagWithEquals = /^-+([^=]+?)=[\s\S]*$/;
      const normalFlag = /^-+([^=]+?)$/;
      const flagEndingInHyphen = /^-+([^=]+?)-$/;
      const flagEndingInDigits = /^-+([^=]+?\d+)$/;
      const flagEndingInNonWordCharacters = /^-+([^=]+?)\W+.*$/;
      return !hasFlagsMatching(
        arg,
        flagWithEquals,
        negatedBoolean,
        normalFlag,
        flagEndingInHyphen,
        flagEndingInDigits,
        flagEndingInNonWordCharacters
      );
    }
    function defaultValue(key) {
      if (
        !checkAllAliases(key, flags.bools) &&
        !checkAllAliases(key, flags.counts) &&
        `${key}` in defaults
      ) {
        return defaults[key];
      } else {
        return defaultForType(guessType(key));
      }
    }
    function defaultForType(type) {
      const def = {
        [DefaultValuesForTypeKey.BOOLEAN]: true,
        [DefaultValuesForTypeKey.STRING]: '',
        [DefaultValuesForTypeKey.NUMBER]: undefined,
        [DefaultValuesForTypeKey.ARRAY]: [],
      };
      return def[type];
    }
    function guessType(key) {
      let type = DefaultValuesForTypeKey.BOOLEAN;
      if (checkAllAliases(key, flags.strings))
        type = DefaultValuesForTypeKey.STRING;
      else if (checkAllAliases(key, flags.numbers))
        type = DefaultValuesForTypeKey.NUMBER;
      else if (checkAllAliases(key, flags.bools))
        type = DefaultValuesForTypeKey.BOOLEAN;
      else if (checkAllAliases(key, flags.arrays))
        type = DefaultValuesForTypeKey.ARRAY;
      return type;
    }
    function isUndefined(num) {
      return num === undefined;
    }
    function checkConfiguration() {
      Object.keys(flags.counts).find((key) => {
        if (checkAllAliases(key, flags.arrays)) {
          error = Error(
            __(
              'Invalid configuration: %s, opts.count excludes opts.array.',
              key
            )
          );
          return true;
        } else if (checkAllAliases(key, flags.nargs)) {
          error = Error(
            __('Invalid configuration: %s, opts.count excludes opts.narg.', key)
          );
          return true;
        }
        return false;
      });
    }
    return {
      aliases: Object.assign({}, flags.aliases),
      argv: Object.assign(argvReturn, argv),
      configuration: configuration,
      defaulted: Object.assign({}, defaulted),
      error: error,
      newAliases: Object.assign({}, newAliases),
    };
  }
}
function combineAliases(aliases) {
  const aliasArrays = [];
  const combined = Object.create(null);
  let change = true;
  Object.keys(aliases).forEach(function (key) {
    aliasArrays.push([].concat(aliases[key], key));
  });
  while (change) {
    change = false;
    for (let i = 0; i < aliasArrays.length; i++) {
      for (let ii = i + 1; ii < aliasArrays.length; ii++) {
        const intersect = aliasArrays[i].filter(function (v) {
          return aliasArrays[ii].indexOf(v) !== -1;
        });
        if (intersect.length) {
          aliasArrays[i] = aliasArrays[i].concat(aliasArrays[ii]);
          aliasArrays.splice(ii, 1);
          change = true;
          break;
        }
      }
    }
  }
  aliasArrays.forEach(function (aliasArray) {
    aliasArray = aliasArray.filter(function (v, i, self) {
      return self.indexOf(v) === i;
    });
    const lastAlias = aliasArray.pop();
    if (lastAlias !== undefined && typeof lastAlias === 'string') {
      combined[lastAlias] = aliasArray;
    }
  });
  return combined;
}
function increment(orig) {
  return orig !== undefined ? orig + 1 : 1;
}
function sanitizeKey(key) {
  if (key === '__proto__') return '___proto___';
  return key;
}

const minNodeVersion =
  process && process.env && process.env.YARGS_MIN_NODE_VERSION ?
    Number(process.env.YARGS_MIN_NODE_VERSION)
  : 10;
if (process && process.version) {
  const major = Number(process.version.match(/v([^.]+)/)[1]);
  if (major < minNodeVersion) {
    throw Error(
      `yargs parser supports a minimum Node.js version of ${minNodeVersion}. Read our version support policy: https://github.com/yargs/yargs-parser#supported-nodejs-versions`
    );
  }
}
const env = process ? process.env : {};
const parser = new YargsParser({
  cwd: process.cwd,
  env: () => {
    return env;
  },
  format: util.format,
  normalize: path.normalize,
  resolve: path.resolve,
  require: (path) => {
    if (typeof require !== 'undefined') {
      return require(path);
    } else if (path.match(/\.json$/)) {
      return fs.readFileSync(path, 'utf8');
    } else {
      throw Error('only .json config files are supported in ESM');
    }
  },
});
const yargsParser = function Parser(args, opts) {
  const result = parser.parse(args.slice(), opts);
  return result.argv;
};
yargsParser.detailed = function (args, opts) {
  return parser.parse(args.slice(), opts);
};
yargsParser.camelCase = camelCase;
yargsParser.decamelize = decamelize;
yargsParser.looksLikeNumber = looksLikeNumber;

module.exports = yargsParser;