first commit

frontend/node_modules/rc-select/lib/hooks/useLock.js

@@ -0,0 +1,40 @@
+"use strict";
+
+var _typeof = require("@babel/runtime/helpers/typeof");
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = useLock;
+var React = _interopRequireWildcard(require("react"));
+function _getRequireWildcardCache(e) { if ("function" != typeof WeakMap) return null; var r = new WeakMap(), t = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(e) { return e ? t : r; })(e); }
+function _interopRequireWildcard(e, r) { if (!r && e && e.__esModule) return e; if (null === e || "object" != _typeof(e) && "function" != typeof e) return { default: e }; var t = _getRequireWildcardCache(r); if (t && t.has(e)) return t.get(e); var n = { __proto__: null }, a = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var u in e) if ("default" !== u && Object.prototype.hasOwnProperty.call(e, u)) { var i = a ? Object.getOwnPropertyDescriptor(e, u) : null; i && (i.get || i.set) ? Object.defineProperty(n, u, i) : n[u] = e[u]; } return n.default = e, t && t.set(e, n), n; }
+/**
+ * Locker return cached mark.
+ * If set to `true`, will return `true` in a short time even if set `false`.
+ * If set to `false` and then set to `true`, will change to `true`.
+ * And after time duration, it will back to `null` automatically.
+ */
+function useLock() {
+  var duration = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 250;
+  var lockRef = React.useRef(null);
+  var timeoutRef = React.useRef(null);
+
+  // Clean up
+  React.useEffect(function () {
+    return function () {
+      window.clearTimeout(timeoutRef.current);
+    };
+  }, []);
+  function doLock(locked) {
+    if (locked || lockRef.current === null) {
+      lockRef.current = locked;
+    }
+    window.clearTimeout(timeoutRef.current);
+    timeoutRef.current = window.setTimeout(function () {
+      lockRef.current = null;
+    }, duration);
+  }
+  return [function () {
+    return lockRef.current;
+  }, doLock];
+}