Initialise fileSystem reducer

libs/remix-ui/file-explorer/src/lib/reducers/fileSystem.ts

@@ -0,0 +1,42 @@
+interface Action {
+    type: string;
+    payload: Record<string, string | number | boolean>;
+}
+
+export const initialState = {
+  files: [],
+  isRequesting: false,
+  isSuccessful: false,
+  hasError: null
+}
+
+export const reducer = (state = initialState, action: Action) => {
+  switch (action.type) {
+    case 'FETCH_DIRECTORY_REQUEST': {
+      return {
+        ...state,
+        isRequesting: true,
+        isSuccessful: false,
+        hasError: null
+      }
+    }
+    case 'FETCH_DIRECTORY_SUCCESS': {
+      return {
+        files: [],
+        isRequesting: false,
+        isSuccessful: true,
+        hasError: null
+      }
+    }
+    case 'FETCH_DIRECTORY_ERROR': {
+      return {
+        ...state,
+        isRequesting: false,
+        isSuccessful: false,
+        hasError: action.payload
+      }
+    }
+    default:
+      throw new Error()
+  }
+}