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frontend/node_modules/rc-util/lib/hooks/useState.js

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+"use strict";
+
+var _interopRequireWildcard = require("@babel/runtime/helpers/interopRequireWildcard").default;
+var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault").default;
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = useSafeState;
+var _slicedToArray2 = _interopRequireDefault(require("@babel/runtime/helpers/slicedToArray"));
+var React = _interopRequireWildcard(require("react"));
+/**
+ * Same as React.useState but `setState` accept `ignoreDestroy` param to not to setState after destroyed.
+ * We do not make this auto is to avoid real memory leak.
+ * Developer should confirm it's safe to ignore themselves.
+ */
+function useSafeState(defaultValue) {
+  var destroyRef = React.useRef(false);
+  var _React$useState = React.useState(defaultValue),
+    _React$useState2 = (0, _slicedToArray2.default)(_React$useState, 2),
+    value = _React$useState2[0],
+    setValue = _React$useState2[1];
+  React.useEffect(function () {
+    destroyRef.current = false;
+    return function () {
+      destroyRef.current = true;
+    };
+  }, []);
+  function safeSetState(updater, ignoreDestroy) {
+    if (ignoreDestroy && destroyRef.current) {
+      return;
+    }
+    setValue(updater);
+  }
+  return [value, safeSetState];
+}