Merge e70df6a into 5be02ae

src/batteries.js

@@ -2,14 +2,22 @@ import { causing } from "./cause";
 import { effector } from "./effect";
 import { trigger } from "./event";
 import { db } from "./db";
+import { connector } from "./connector"
 
 /**
- * Cause that returs the state of the database signal.
+ * Cause that returns the state of the database signal.
  *
  * @see {@link db}
  */
 causing("db", () => db.value());
 
+/**
+ * Connector that connects to the database state.
+ *
+ * @see {@link db}
+ */
+connector("db", () => db.value());
+
 /**
  * Cause that returns the current time.
  */
@@ -78,7 +86,7 @@ effector(
     for (let name in headers) {
       xhr.setRequestHeader(name, headers[name]);
     }
-    xhr.onload = xhr.onerror = function() {
+    xhr.onload = xhr.onerror = function () {
       switch (this.status) {
         case STATUS_OK:
         case STATUS_CREATED:

src/batteries.test.js

@@ -12,7 +12,7 @@ beforeEach(() => {
   trigger.mockClear();
 });
 
-window.XMLHttpRequest = function() {
+window.XMLHttpRequest = function () {
   let xhr = {
     open: jest.fn(),
     send: jest.fn(),
@@ -30,6 +30,13 @@ describe("db cause", () => {
   });
 });
 
+describe("db connector", () => {
+  it("should return the state of db", () => {
+    db.reset({ foo: "bar" });
+    expect(connect("db")).toStrictEqual({ foo: "bar" });
+  });
+});
+
 describe("now cause", () => {
   it("should return the current time", () => {
     let now = Date.now();