var __create = Object.create;
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __getProtoOf = Object.getPrototypeOf;
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 __toESM = (mod, isNodeMode, target) => (target = mod != null ? __create(__getProtoOf(mod)) : {}, __copyProps(
  // If the importer is in node compatibility mode or this is not an ESM
  // file that has been converted to a CommonJS file using a Babel-
  // compatible transform (i.e. "__esModule" has not been set), then set
  // "default" to the CommonJS "module.exports" for node compatibility.
  isNodeMode || !mod || !mod.__esModule ? __defProp(target, "default", { value: mod, enumerable: true }) : target,
  mod
));
var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);

// dist/index.js
var dist_exports = {};
__export(dist_exports, {
  Proj4Projection: () => Proj4Projection
});
module.exports = __toCommonJS(dist_exports);

// dist/lib/proj4-projection.js
var import_proj4 = __toESM(require("proj4"), 1);
var Proj4Projection = class {
  /** Define aliases for one or more projections */
  static defineProjectionAliases(aliases) {
    const aliasArray = [];
    for (const alias in aliases) {
      aliasArray.push([alias, aliases[alias]]);
    }
    import_proj4.default.defs(aliasArray);
  }
  constructor({ from = "WGS84", to = "WGS84" }) {
    this._projection = (0, import_proj4.default)(from, to);
    if (!this._projection) {
      throw new Error("Invalid projection");
    }
    this.project = this.project.bind(this);
    this.unproject = this.unproject.bind(this);
  }
  /** Project a coordinate project from first to second coordinate system */
  project(coord) {
    return this._projection.forward(coord);
  }
  /** Project a coordinate project from second to first coordinate system */
  unproject(coord) {
    return this._projection.inverse(coord);
  }
};
//# sourceMappingURL=index.cjs.map