"use strict"
var __createBinding =
  (this && this.__createBinding) ||
  (Object.create
    ? function (o, m, k, k2) {
        if (k2 === undefined) k2 = k
        Object.defineProperty(o, k2, {
          enumerable: true,
          get: function () {
            return m[k]
          }
        })
      }
    : function (o, m, k, k2) {
        if (k2 === undefined) k2 = k
        o[k2] = m[k]
      })
var __setModuleDefault =
  (this && this.__setModuleDefault) ||
  (Object.create
    ? function (o, v) {
        Object.defineProperty(o, "default", { enumerable: true, value: v })
      }
    : function (o, v) {
        o["default"] = v
      })
var __importStar =
  (this && this.__importStar) ||
  function (mod) {
    if (mod && mod.__esModule) return mod
    var result = {}
    if (mod != null)
      for (var k in mod)
        if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k))
          __createBinding(result, mod, k)
    __setModuleDefault(result, mod)
    return result
  }
Object.defineProperty(exports, "__esModule", { value: true })
exports.once = void 0
// tracing: off
const Function_1 = require("../Function")
const Ref_1 = require("../Ref")
const map = __importStar(require("./map"))
const whenM_1 = require("./whenM")
/**
 * Returns an effect that will be executed at most once, even if it is
 * evaluated multiple times.
 */
function once(self, __trace) {
  return map.map_(
    (0, Ref_1.makeRef)(true),
    (r) => (0, whenM_1.whenM_)(self, (0, Ref_1.getAndSet)(false)(r)),
    __trace
  )
}
exports.once = once
//# sourceMappingURL=once.js.map
