Add haveParametersChanged util

Author: sebastianquek

src/utils.ts

@@ -59,6 +59,20 @@ export function extractNextParameters<
   }
 }
 
+export function haveParametersChanged(
+  parameters: Record<string, unknown>,
+  nextParameters: Record<string, unknown>,
+) {
+  const keys = [
+    ...Object.keys(parameters),
+    ...Object.keys(nextParameters),
+  ];
+  const uniqueKeys = new Set(keys);
+  return [...uniqueKeys].some((key) =>
+    `${parameters[key]}` !== `${nextParameters[key]}` // string comparison
+  );
+}
+
 function getSource() {
   const moduleSource = `serpapi@${version}`;
   try {

tests/utils_test.ts

@@ -21,6 +21,7 @@ import {
   buildUrl,
   execute,
   extractNextParameters,
+  haveParametersChanged,
 } from "../src/utils.ts";
 
 loadSync({ export: true });
@@ -68,6 +69,106 @@ describe("extractNextParameters", () => {
   });
 });
 
+describe("haveParametersChanged", () => {
+  it("with different number of properties", () => {
+    assertEquals(
+      haveParametersChanged({ q: "coffee" }, {
+        kl: "us-en",
+        q: "coffee",
+        start: "26",
+      }),
+      true,
+    );
+    assertEquals(
+      haveParametersChanged({ kl: "us-en", q: "coffee", start: "26" }, {
+        q: "coffee",
+      }),
+      true,
+    );
+  });
+
+  it("with same number of properties, but different properties", () => {
+    assertEquals(
+      haveParametersChanged({
+        kl: "us-en",
+        q: "coffee",
+        safe: "1",
+      }, {
+        kl: "us-en",
+        q: "coffee",
+        start: "26",
+      }),
+      true,
+    );
+  });
+
+  it("with same properties, but different values", () => {
+    assertEquals(
+      haveParametersChanged({
+        kl: "us-en",
+        q: "coffee",
+        start: "30",
+      }, {
+        kl: "us-en",
+        q: "coffee",
+        start: "26",
+      }),
+      true,
+    );
+    assertEquals(
+      haveParametersChanged({
+        kl: "us-en",
+        q: "coffee",
+        start: "26",
+      }, {
+        kl: "us-en",
+        q: "coffee",
+        start: "30",
+      }),
+      true,
+    );
+  });
+
+  it("with same properties and same values, regardless of type", () => {
+    assertEquals(
+      haveParametersChanged({
+        kl: "us-en",
+        q: "coffee",
+        start: "30",
+      }, {
+        kl: "us-en",
+        q: "coffee",
+        start: "30",
+      }),
+      false,
+    );
+    assertEquals(
+      haveParametersChanged({
+        kl: "us-en",
+        q: "coffee",
+        start: 30,
+      }, {
+        kl: "us-en",
+        q: "coffee",
+        start: "30",
+      }),
+      false,
+    );
+    assertEquals(
+      haveParametersChanged({
+        kl: "us-en",
+        q: "coffee",
+        start: "30",
+      }, {
+        kl: "us-en",
+        q: "coffee",
+        start: 30,
+      }),
+      false,
+    );
+  });
+});
+
 describe("buildUrl", () => {
   let urlStub: Stub;