Add .expo folder and settings, implement tests for BigList unique key handling

- Created .expo folder with README and settings.json for project configuration.
- Added tests for BigList component to ensure unique key handling and section rendering.
- Included scenarios for valid data, empty sections, and mixed content to validate robustness.

Author: marcocesarato

.expo/README.md

@@ -0,0 +1,15 @@
+> Why do I have a folder named ".expo" in my project?
+
+The ".expo" folder is created when an Expo project is started using "expo start" command.
+
+> What do the files contain?
+
+- "devices.json": contains information about devices that have recently opened this project. This is used to populate the "Development sessions" list in your development builds.
+- "packager-info.json": contains port numbers and process PIDs that are used to serve the application to the mobile device/simulator.
+- "settings.json": contains the server configuration that is used to serve the application manifest.
+
+> Should I commit the ".expo" folder?
+
+No, you should not share the ".expo" folder. It does not contain any information that is relevant for other developers working on the project, it is specific to your machine.
+
+Upon project creation, the ".expo" folder is already added to your ".gitignore" file.

.expo/settings.json

@@ -0,0 +1,8 @@
+{
+  "hostType": "lan",
+  "lanType": "ip",
+  "dev": true,
+  "minify": false,
+  "urlRandomness": null,
+  "https": false
+}

__tests__/BigList.unique-key-fix.test.js

@@ -0,0 +1,105 @@
+import React from "react";
+import { Text } from "react-native";
+import { render } from "@testing-library/react-native";
+
+import BigList from "../lib/BigList";
+
+describe("BigList Unique Key Fix", () => {
+  const mockData = [
+    { title: "Item 1", description: "Description 1" },
+    { title: "Item 2", description: "Description 2" },
+    { title: "Item 3", description: "Description 3" },
+  ];
+
+  const mockSections = [
+    [
+      { title: "Section 1 Item 1", description: "Description 1.1" },
+      { title: "Section 1 Item 2", description: "Description 1.2" },
+    ],
+    [
+      { title: "Section 2 Item 1", description: "Description 2.1" },
+      { title: "Section 2 Item 2", description: "Description 2.2" },
+    ],
+  ];
+
+  const renderItem = ({ item }) => (
+    <Text>{item.title}</Text>
+  );
+
+  it("should handle section and index calculations with valid numbers", () => {
+    const { getByText } = render(
+      <BigList
+        sections={mockSections}
+        itemHeight={50}
+        renderItem={renderItem}
+        containerHeight={200}
+      />
+    );
+
+    // Should render without errors even if internal calculations occur
+    expect(getByText("Section 1 Item 1")).toBeTruthy();
+  });
+
+  it("should render sections without NaN in unique key calculations", () => {
+    const consoleSpy = jest.spyOn(console, 'error').mockImplementation(() => {});
+    
+    render(
+      <BigList
+        sections={mockSections}
+        itemHeight={50}
+        renderItem={renderItem}
+        containerHeight={200}
+      />
+    );
+
+    // Check that no React key-related errors were logged
+    const keyErrors = consoleSpy.mock.calls.filter(call => 
+      call.some(arg => 
+        typeof arg === 'string' && (
+          arg.includes('key') || 
+          arg.includes('unique') || 
+          arg.includes('NaN')
+        )
+      )
+    );
+
+    expect(keyErrors).toHaveLength(0);
+    consoleSpy.mockRestore();
+  });
+
+  it("should handle empty sections gracefully", () => {
+    const emptySections = [[], []];
+    
+    const renderResult = render(
+      <BigList
+        sections={emptySections}
+        itemHeight={50}
+        renderItem={renderItem}
+        containerHeight={200}
+      />
+    );
+
+    // Should render without throwing errors
+    expect(renderResult).toBeTruthy();
+  });
+
+  it("should handle mixed empty and non-empty sections", () => {
+    const mixedSections = [
+      [{ title: "Item 1", description: "Desc 1" }],
+      [], // Empty section
+      [{ title: "Item 2", description: "Desc 2" }],
+    ];
+    
+    const { getByText } = render(
+      <BigList
+        sections={mixedSections}
+        itemHeight={50}
+        renderItem={renderItem}
+        containerHeight={200}
+      />
+    );
+
+    expect(getByText("Item 1")).toBeTruthy();
+    expect(getByText("Item 2")).toBeTruthy();
+  });
+});

example/package.json

@@ -17,7 +17,7 @@
     "react": "17.0.1",
     "react-dom": "17.0.1",
     "react-native": "0.64.3",
-    "react-native-big-list": "^1.6.1",
+    "react-native-big-list": "file:..",
     "react-native-paper": "^4.9.1",
     "react-native-safe-area-context": "3.3.2",
     "react-native-web": "0.17.1"

example/yarn.lock

@@ -2669,7 +2669,7 @@ colors@^1.1.2:
   resolved "https://registry.yarnpkg.com/colors/-/colors-1.4.0.tgz#c50491479d4c1bdaed2c9ced32cf7c7dc2360f78"
   integrity sha512-a+UqTh4kgZg/SlGvfbzDHpgRu7AAQOmmqRHJnxhRZICKFUT91brVhNNt58CMWU9PsBbv3PDCZUHbVxuDiH2mtA==
 
-command-exists@^1.2.8, command-exists@^1.2.9:
+command-exists@^1.2.8:
   version "1.2.9"
   resolved "https://registry.yarnpkg.com/command-exists/-/command-exists-1.2.9.tgz#c50725af3808c8ab0260fd60b01fbfa25b954f69"
   integrity sha512-LTQ/SGc+s0Xc0Fu5WaKnR0YiygZkm9eKFvyS+fRsU7/ZWFF8ykFM6Pc9aCVf1+xasOOZpO3BAVgVrKvsqKHV7w==
@@ -2818,15 +2818,6 @@ cross-spawn@^6.0.0, cross-spawn@^6.0.5:
     shebang-command "^1.2.0"
     which "^1.2.9"
 
-cross-spawn@^7.0.3:
-  version "7.0.3"
-  resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-7.0.3.tgz#f73a85b9d5d41d045551c177e2882d4ac85728a6"
-  integrity sha512-iRDPJKUPVEND7dHPO8rkbOnPpyDygcDFtWjpeWNCgy8WP2rXcxXL8TskReQl6OrB2G7+UJrags1q15Fudc7G6w==
-  dependencies:
-    path-key "^3.1.0"
-    shebang-command "^2.0.0"
-    which "^2.0.1"
-
 css-in-js-utils@^2.0.0:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/css-in-js-utils/-/css-in-js-utils-2.0.1.tgz#3b472b398787291b47cfe3e44fecfdd9e914ba99"
@@ -5005,11 +4996,6 @@ path-key@^2.0.0, path-key@^2.0.1:
   resolved "https://registry.yarnpkg.com/path-key/-/path-key-2.0.1.tgz#411cadb574c5a140d3a4b1910d40d80cc9f40b40"
   integrity sha1-QRyttXTFoUDTpLGRDUDYDMn0C0A=
 
-path-key@^3.1.0:
-  version "3.1.1"
-  resolved "https://registry.yarnpkg.com/path-key/-/path-key-3.1.1.tgz#581f6ade658cbba65a0d3380de7753295054f375"
-  integrity sha512-ojmeN0qd+y0jszEtoY48r0Peq5dwMEkIlCOu6Q5f41lfkswXuKtYrhgoTpLnyIcHm24Uhqx+5Tqm2InSwLhE6Q==
-
 path-parse@^1.0.6:
   version "1.0.7"
   resolved "https://registry.yarnpkg.com/path-parse/-/path-parse-1.0.7.tgz#fbc114b60ca42b30d9daf5858e4bd68bbedb6735"
@@ -5139,6 +5125,15 @@ prop-types@^15.6.0, prop-types@^15.7.2:
     object-assign "^4.1.1"
     react-is "^16.8.1"
 
+prop-types@^15.8.1:
+  version "15.8.1"
+  resolved "https://registry.yarnpkg.com/prop-types/-/prop-types-15.8.1.tgz#67d87bf1a694f48435cf332c24af10214a3140b5"
+  integrity sha512-oj87CgZICdulUohogVAR7AjlC0327U4el4L6eAvOqCeudMDVU0NThNaV+b9Df4dXgSP1gXMTnPdhfe/2qDH5cg==
+  dependencies:
+    loose-envify "^1.4.0"
+    object-assign "^4.1.1"
+    react-is "^16.13.1"
+
 pump@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/pump/-/pump-3.0.0.tgz#b4a2116815bde2f4e1ea602354e8c75565107a64"
@@ -5187,7 +5182,7 @@ [email protected]:
     object-assign "^4.1.1"
     scheduler "^0.20.1"
 
-react-is@^16.7.0, react-is@^16.8.1:
+react-is@^16.13.1, react-is@^16.7.0, react-is@^16.8.1:
   version "16.13.1"
   resolved "https://registry.yarnpkg.com/react-is/-/react-is-16.13.1.tgz#789729a4dc36de2999dc156dd6c1d9c18cea56a4"
   integrity sha512-24e6ynE2H+OKt4kqsOvNd8kBpV65zoxbA4BVsEOB3ARVWQki/DHzaUoC5KuON/BiccDaCCTZBuOcfZs70kR8bQ==
@@ -5197,13 +5192,10 @@ react-is@^17.0.1:
   resolved "https://registry.yarnpkg.com/react-is/-/react-is-17.0.2.tgz#e691d4a8e9c789365655539ab372762b0efb54f0"
   integrity sha512-w2GsyukL62IJnlaff/nRegPQR94C/XXamvMWmSHRJ4y7Ts/4ocGRmTHvOs8PSE6pB3dWOrD/nueuU5sduBsQ4w==
 
-react-native-big-list@^1.4.3:
-  version "1.4.3"
-  resolved "https://registry.yarnpkg.com/react-native-big-list/-/react-native-big-list-1.4.3.tgz#b5b8980e119183dd6337c0afbcea957eec9bc9ee"
-  integrity sha512-gP6CWSquEuLcKJmkmP/YbWhU9nyetpJ9jXYJHRor+iuRUSoA+21gK71GC0eGMPEg0Scl3+lfPhCH9JfECwYAXw==
+"react-native-big-list@file:..":
+  version "1.6.3"
   dependencies:
-    prop-types "^15.7.2"
-    yarpm "^1.1.1"
+    prop-types "^15.8.1"
 
 react-native-codegen@^0.0.6:
   version "0.0.6"
@@ -5640,23 +5632,11 @@ shebang-command@^1.2.0:
   dependencies:
     shebang-regex "^1.0.0"
 
-shebang-command@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/shebang-command/-/shebang-command-2.0.0.tgz#ccd0af4f8835fbdc265b82461aaf0c36663f34ea"
-  integrity sha512-kHxr2zZpYtdmrN1qDjrrX/Z1rR1kG8Dx+gkpK1G4eXmvXswmcE1hTWBWYUzlraYw1/yZp6YuDY77YtvbN0dmDA==
-  dependencies:
-    shebang-regex "^3.0.0"
-
 shebang-regex@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/shebang-regex/-/shebang-regex-1.0.0.tgz#da42f49740c0b42db2ca9728571cb190c98efea3"
   integrity sha1-2kL0l0DAtC2yypcoVxyxkMmO/qM=
 
-shebang-regex@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/shebang-regex/-/shebang-regex-3.0.0.tgz#ae16f1644d873ecad843b0307b143362d4c42172"
-  integrity sha512-7++dFhtcx3353uBaq8DDR4NuxBetBzC7ZQOhmTQInHEd6bSrXdiEyzCvG07Z44UYdLShWUyXt5M/yhz8ekcb1A==
-
 [email protected]:
   version "1.6.1"
   resolved "https://registry.yarnpkg.com/shell-quote/-/shell-quote-1.6.1.tgz#f4781949cce402697127430ea3b3c5476f481767"
@@ -6203,13 +6183,6 @@ which@^1.2.9:
   dependencies:
     isexe "^2.0.0"
 
-which@^2.0.1:
-  version "2.0.2"
-  resolved "https://registry.yarnpkg.com/which/-/which-2.0.2.tgz#7c6a8dd0a636a0327e10b59c9286eee93f3f51b1"
-  integrity sha512-BLI3Tl1TW3Pvl70l3yq3Y64i+awpwXqsGBYWkkqMtnbXgrMD+yj7rhW0kuEDxzJaYXGjEW5ogapKNMEKNMjibA==
-  dependencies:
-    isexe "^2.0.0"
-
 wrap-ansi@^6.2.0:
   version "6.2.0"
   resolved "https://registry.yarnpkg.com/wrap-ansi/-/wrap-ansi-6.2.0.tgz#e9393ba07102e6c91a3b221478f0257cd2856e53"
@@ -6339,14 +6312,6 @@ yargs@^15.1.0, yargs@^15.3.1:
     y18n "^4.0.0"
     yargs-parser "^18.1.2"
 
-yarpm@^1.1.1:
-  version "1.1.1"
-  resolved "https://registry.yarnpkg.com/yarpm/-/yarpm-1.1.1.tgz#23e25e512b409d941524a9674718f1871e5fb52a"
-  integrity sha512-A3gVdtyld+gYcVmKScvJqS2oT/i9xdsb/SqDsY9c0+BeYdYBUJrRfr4pD7UP+5uXEneJ0BL0rC/6rd1fnlYEcg==
-  dependencies:
-    command-exists "^1.2.9"
-    cross-spawn "^7.0.3"
-
 yocto-queue@^0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/yocto-queue/-/yocto-queue-0.1.0.tgz#0294eb3dee05028d31ee1a5fa2c556a6aaf10a1b"