'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

const DEFAULT_THROW_IF_EMPTY = false;
const DEFAULT_KEY = "NODE_ENV";
const DEFAULT_SOURCE = globalThis.process.env;

class EnvModeException extends Error {
}

var __defProp = Object.defineProperty;
var __defNormalProp = (obj, key, value) => key in obj ? __defProp(obj, key, { enumerable: true, configurable: true, writable: true, value }) : obj[key] = value;
var __publicField = (obj, key, value) => __defNormalProp(obj, typeof key !== "symbol" ? key + "" : key, value);
class EnvMode {
  static configure(opts) {
    const { throwIfEmpty, key, source } = opts;
    if (throwIfEmpty) this.throwIfEmpty = throwIfEmpty;
    if (key) this.key = key;
    if (source) this.source = source;
  }
  static get() {
    return this.getGuardedMode();
  }
  static getOrThrow() {
    return this._getOrThrow();
  }
  static is(mode) {
    return mode === this.get();
  }
  static isNot(mode) {
    return !this.is(mode);
  }
  static in(modes) {
    return modes.includes(this.get());
  }
  static notIn(modes) {
    return !this.in(modes);
  }
  static select(selector) {
    const value = selector[this.get()];
    return value === void 0 ? selector.default : value;
  }
  /** @internal */
  static getGuardedMode() {
    return this.throwIfEmpty ? this._getOrThrow() : this._get();
  }
  /** @internal */
  static _getOrThrow() {
    const mode = this._get();
    this.guard(mode);
    return mode;
  }
  /** @internal */
  static _get() {
    return this.source[this.key];
  }
  /** @internal */
  static guard(mode) {
    if (this.isEmpty(mode)) throw new EnvModeException(`"${this.key}" is not defined in "${this.source.toString()}".`);
    return true;
  }
  /** @internal */
  static isEmpty(mode) {
    return mode === void 0 || mode === "";
  }
}
/** @internal */
__publicField(EnvMode, "throwIfEmpty", DEFAULT_THROW_IF_EMPTY);
/** @internal */
__publicField(EnvMode, "key", DEFAULT_KEY);
/** @internal */
__publicField(EnvMode, "source", DEFAULT_SOURCE);

exports.default = EnvMode;

module.exports = Object.assign(exports.default, exports);
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