Initial commit

node_modules/react-redux/es/connect/selectorFactory.js

@@ -0,0 +1,102 @@
+function _objectWithoutProperties(obj, keys) { var target = {}; for (var i in obj) { if (keys.indexOf(i) >= 0) continue; if (!Object.prototype.hasOwnProperty.call(obj, i)) continue; target[i] = obj[i]; } return target; }
+
+import verifySubselectors from './verifySubselectors';
+
+export function impureFinalPropsSelectorFactory(mapStateToProps, mapDispatchToProps, mergeProps, dispatch) {
+  return function impureFinalPropsSelector(state, ownProps) {
+    return mergeProps(mapStateToProps(state, ownProps), mapDispatchToProps(dispatch, ownProps), ownProps);
+  };
+}
+
+export function pureFinalPropsSelectorFactory(mapStateToProps, mapDispatchToProps, mergeProps, dispatch, _ref) {
+  var areStatesEqual = _ref.areStatesEqual,
+      areOwnPropsEqual = _ref.areOwnPropsEqual,
+      areStatePropsEqual = _ref.areStatePropsEqual;
+
+  var hasRunAtLeastOnce = false;
+  var state = void 0;
+  var ownProps = void 0;
+  var stateProps = void 0;
+  var dispatchProps = void 0;
+  var mergedProps = void 0;
+
+  function handleFirstCall(firstState, firstOwnProps) {
+    state = firstState;
+    ownProps = firstOwnProps;
+    stateProps = mapStateToProps(state, ownProps);
+    dispatchProps = mapDispatchToProps(dispatch, ownProps);
+    mergedProps = mergeProps(stateProps, dispatchProps, ownProps);
+    hasRunAtLeastOnce = true;
+    return mergedProps;
+  }
+
+  function handleNewPropsAndNewState() {
+    stateProps = mapStateToProps(state, ownProps);
+
+    if (mapDispatchToProps.dependsOnOwnProps) dispatchProps = mapDispatchToProps(dispatch, ownProps);
+
+    mergedProps = mergeProps(stateProps, dispatchProps, ownProps);
+    return mergedProps;
+  }
+
+  function handleNewProps() {
+    if (mapStateToProps.dependsOnOwnProps) stateProps = mapStateToProps(state, ownProps);
+
+    if (mapDispatchToProps.dependsOnOwnProps) dispatchProps = mapDispatchToProps(dispatch, ownProps);
+
+    mergedProps = mergeProps(stateProps, dispatchProps, ownProps);
+    return mergedProps;
+  }
+
+  function handleNewState() {
+    var nextStateProps = mapStateToProps(state, ownProps);
+    var statePropsChanged = !areStatePropsEqual(nextStateProps, stateProps);
+    stateProps = nextStateProps;
+
+    if (statePropsChanged) mergedProps = mergeProps(stateProps, dispatchProps, ownProps);
+
+    return mergedProps;
+  }
+
+  function handleSubsequentCalls(nextState, nextOwnProps) {
+    var propsChanged = !areOwnPropsEqual(nextOwnProps, ownProps);
+    var stateChanged = !areStatesEqual(nextState, state);
+    state = nextState;
+    ownProps = nextOwnProps;
+
+    if (propsChanged && stateChanged) return handleNewPropsAndNewState();
+    if (propsChanged) return handleNewProps();
+    if (stateChanged) return handleNewState();
+    return mergedProps;
+  }
+
+  return function pureFinalPropsSelector(nextState, nextOwnProps) {
+    return hasRunAtLeastOnce ? handleSubsequentCalls(nextState, nextOwnProps) : handleFirstCall(nextState, nextOwnProps);
+  };
+}
+
+// TODO: Add more comments
+
+// If pure is true, the selector returned by selectorFactory will memoize its results,
+// allowing connectAdvanced's shouldComponentUpdate to return false if final
+// props have not changed. If false, the selector will always return a new
+// object and shouldComponentUpdate will always return true.
+
+export default function finalPropsSelectorFactory(dispatch, _ref2) {
+  var initMapStateToProps = _ref2.initMapStateToProps,
+      initMapDispatchToProps = _ref2.initMapDispatchToProps,
+      initMergeProps = _ref2.initMergeProps,
+      options = _objectWithoutProperties(_ref2, ['initMapStateToProps', 'initMapDispatchToProps', 'initMergeProps']);
+
+  var mapStateToProps = initMapStateToProps(dispatch, options);
+  var mapDispatchToProps = initMapDispatchToProps(dispatch, options);
+  var mergeProps = initMergeProps(dispatch, options);
+
+  if (process.env.NODE_ENV !== 'production') {
+    verifySubselectors(mapStateToProps, mapDispatchToProps, mergeProps, options.displayName);
+  }
+
+  var selectorFactory = options.pure ? pureFinalPropsSelectorFactory : impureFinalPropsSelectorFactory;
+
+  return selectorFactory(mapStateToProps, mapDispatchToProps, mergeProps, dispatch, options);
+}