refactor: split the main file into 3

.vscode/launch.json

@@ -0,0 +1,19 @@
+{
+  // Use IntelliSense to learn about possible attributes.
+  // Hover to view descriptions of existing attributes.
+  // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "type": "node",
+      "request": "launch",
+      "name": "Debug Current Test File",
+      "autoAttachChildProcesses": true,
+      "skipFiles": ["<node_internals>/**", "**/node_modules/**"],
+      "program": "${workspaceRoot}/node_modules/vitest/vitest.mjs",
+      "args": ["run", "${relativeFile}"],
+      "smartStep": true,
+      "console": "integratedTerminal"
+    }
+  ]
+}

src/browser-detection.test.ts

@@ -2,7 +2,6 @@ import { describe, expect, test } from 'vitest';
 
 import {
   detectBrowserName,
-  detectBrowserVersion,
   detectBrowserNameAndVersion,
 } from './browser-detection';
 
@@ -211,15 +210,3 @@ describe('Should correctly detect name of', () => {
     expect(detectBrowserName(chrome)).toEqual('Chrome');
   });
 });
-
-describe('Should correctly detect version of', () => {
-  test('UC Browser', () => {
-    const ucBrowser = {
-      userAgent: `UCWEB/2.0 (Java; U; MIDP-2.0; Nokia203/20.37)
-        U2/1.0.0 UCBrowser/8.7.0.218 U2/1.0.0 Mobile`,
-    };
-    const name = 'UC Browser';
-
-    expect(detectBrowserVersion(ucBrowser, name)).toEqual(8.7);
-  });
-});

src/browser-detection.ts

@@ -1,5 +1,4 @@
-import { retrieveVersion } from './retrieve-version';
-
+import { detectBrowserVersion } from './detect-browser-version';
 /**
  * Detects Chrome browser
  */
@@ -154,7 +153,7 @@ export type UaBrowserName =
 /**
  * Returns Association
  */
-function getBrowserUaName(
+export function getBrowserUaName(
   name: BrowserName | undefined,
 ): UaBrowserName | undefined {
   if (name) {
@@ -173,57 +172,6 @@ function getBrowserUaName(
   }
 }
 
-/**
- * Detects browser version
- */
-function detectBrowserVersion(
-  nav: {
-    userAgent: string;
-    appName?: string;
-    appVersion?: string;
-  },
-  name: BrowserName | undefined,
-): number | undefined {
-  const { userAgent } = nav;
-
-  if (name) {
-    // eslint-disable-next-line default-case, @typescript-eslint/switch-exhaustiveness-check
-    switch (name) {
-      case 'Edge': {
-        const temp = /\b(Edge)\/(\d+)/.exec(userAgent);
-        return temp ? Number(temp[2]) : undefined;
-      }
-
-      case 'IE': {
-        const temp = /\brv[ :]+(\d+)/g.exec(userAgent) ?? [];
-        return Number(temp[1]) || undefined;
-      }
-    }
-  }
-
-  const browserName = getBrowserUaName(name);
-
-  if (browserName) {
-    return retrieveVersion(browserName, userAgent);
-  }
-
-  let found =
-    /(opera|chrome|safari|firefox|msie|trident(?=\/))\/?\s*(\d+)/i.exec(
-      userAgent,
-    ) ?? [];
-
-  // eslint-disable-next-line @typescript-eslint/ban-ts-comment, @typescript-eslint/prefer-ts-expect-error
-  // @ts-ignore
-  found = found[2] ? [found[1], found[2]] : [nav.appName, nav.appVersion, '-?'];
-
-  let temp;
-  if ((temp = /version\/(\d+)/i.exec(userAgent)) !== null) {
-    found.splice(1, 1, temp[1]);
-  }
-
-  return found[1] ? Number(found[1]) : undefined;
-}
-
 /**
  * Detects browser name & version
  */

src/detect-browser-version.test.ts

@@ -0,0 +1,185 @@
+/* eslint-disable no-warning-comments */
+import { describe, expect, test } from 'vitest';
+
+import { detectBrowserVersion } from './detect-browser-version';
+
+describe('Should correctly detect name & version of', () => {
+  test('Chrome', () => {
+    const chrome = {
+      userAgent: `Mozilla/5.0 (Windows NT 10.0; Win64; x64) 
+        AppleWebKit/537.36 (KHTML, like Gecko) 
+        Chrome/62.0.3202.94 Safari/537.36`,
+    };
+
+    expect(detectBrowserVersion(chrome, 'Chrome')).toStrictEqual(62);
+
+    const chromeMobile = {
+      userAgent: `Mozilla/5.0 (Linux; Android 6.0; 
+        Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, 
+        like Gecko) Chrome/62.0.3202.94 Mobile Safari/537.36`,
+    };
+
+    expect(detectBrowserVersion(chromeMobile, 'Chrome')).toStrictEqual(62);
+  });
+
+  test('Safari 17', () => {
+    const safari = {
+      userAgent: `Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) 
+        AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.0 Safari/605.1.15`,
+    };
+
+    expect(detectBrowserVersion(safari, 'Safari')).toStrictEqual(17);
+  });
+
+  test('Safari', () => {
+    const safari = {
+      userAgent: `Mozilla/5.0 (Macintosh; 
+        Intel Mac OS X 10_13_1) AppleWebKit/604.3.5 (KHTML, like Gecko) 
+        Version/11.0.1 Safari/604.3.5`,
+    };
+
+    expect(detectBrowserVersion(safari, 'Safari')).toStrictEqual(11);
+  });
+
+  test('Safari iPad', () => {
+    const safari = {
+      userAgent:
+        'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.0 Safari/605.1.15',
+    };
+    expect(detectBrowserVersion(safari, 'Safari')).toStrictEqual(17);
+  });
+
+  test('Samsung Internet', () => {
+    const samsung = {
+      userAgent: `Mozilla/5.0 (Linux; Android 5.1.1; 
+        SAMSUNG SM-G360T1 Build/LMY47X)
+        AppleWebKit/537.36 (KHTML, like Gecko)
+        SamsungBrowser/3.3 Chrome/38.0.2125.102 Mobile Safari/537.36`,
+    };
+
+    expect(detectBrowserVersion(samsung, 'Samsung Internet')).toStrictEqual(3);
+  });
+
+  test('UC Browser', () => {
+    const ucBrowser = {
+      userAgent: `UCWEB/2.0 (Java; U; MIDP-2.0; Nokia203/20.37)
+        U2/1.0.0 UCBrowser/8.7.0.218 U2/1.0.0 Mobile`,
+    };
+
+    expect(detectBrowserVersion(ucBrowser, 'UC Browser')).toStrictEqual(8.7);
+
+    const ucBrowser11 = {
+      userAgent: `Mozilla/5.0 (Linux; U; Android 4.2.2; en-US;
+        Micromax A102 Build/MicromaxA102) AppleWebKit/534.30 
+        (KHTML, like Gecko) Version/4.0 UCBrowser/11.1.0.882 U3/0.8.0 
+        Mobile Safari/534.30`,
+    };
+
+    expect(detectBrowserVersion(ucBrowser11, 'UC Browser')).toStrictEqual(11);
+  });
+
+  test('Firefox', () => {
+    const firefox = {
+      userAgent: `Mozilla/5.0 
+        (Windows NT 10.0; Win64; x64; rv:57.0) 
+        Gecko/20100101 Firefox/57.0`,
+    };
+
+    expect(detectBrowserVersion(firefox, 'Firefox')).toStrictEqual(57);
+  });
+
+  test('QQ Browser', () => {
+    const qqbrowser = {
+      userAgent: `Mozilla/5.0 (Linux; U; Android 11; zh-cn; 21091116UC Build/RP1A.200720.011) 
+        AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 
+        Chrome/66.0.3359.126 MQQBrowser/10.8 Mobile Safari/537.36`,
+    };
+    // TODO: change from 10 to 10.8
+    expect(detectBrowserVersion(qqbrowser, 'QQ Browser')).toStrictEqual(10);
+  });
+
+  describe('Opera', () => {
+    test('Blink-based', () => {
+      const opera = {
+        userAgent: `Mozilla/5.0 (Windows NT 10.0; Win64; x64) 
+          AppleWebKit/537.36 (KHTML, like Gecko) 
+          Chrome/62.0.3202.89 Safari/537.36 OPR/49.0.2725.39`,
+      };
+
+      expect(detectBrowserVersion(opera, 'Opera')).toStrictEqual(49);
+    });
+  });
+
+  test('Android browser', () => {
+    const android = {
+      userAgent: `Mozilla/5.0 (Linux; U; Android 4.0.4;
+       pt-br; MZ608 Build/7.7.1-141-7-FLEM-UMTS-LA) 
+       AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Safari/534.30`,
+    };
+
+    expect(detectBrowserVersion(android, 'Android Browser')).toStrictEqual(4);
+  });
+
+  test('Edge', () => {
+    const edge = {
+      userAgent: `Mozilla/5.0 (Windows NT 10.0; Win64; x64) 
+        AppleWebKit/537.36 (KHTML, like Gecko) 
+        Chrome/52.0.2743.116 Safari/537.36 Edge/15.15063`,
+    };
+
+    expect(detectBrowserVersion(edge, 'Edge')).toStrictEqual(15);
+  });
+
+  test('Internet Explorer', () => {
+    const ie = {
+      userAgent: `Mozilla/5.0 (Windows NT 10.0; WOW64; 
+        Trident/7.0; .NET4.0C; .NET4.0E; .NET CLR 2.0.50727; 
+        .NET CLR 3.0.30729; .NET CLR 3.5.30729; rv:11.0) like Gecko`,
+    };
+
+    expect(detectBrowserVersion(ie, 'IE')).toStrictEqual(11);
+  });
+});
+
+describe('Should not fail', () => {
+  test('If can not find a version', () => {
+    const ieWithoutVersion = {
+      userAgent: `Mozilla/5.0 (Windows NT 10.0; WOW64; 
+        Trident/7.0; .NET4.0C; .NET4.0E; .NET CLR 2.0.50727; 
+        .NET CLR 3.0.30729; .NET CLR 3.5.30729) like Gecko`,
+    };
+
+    expect(detectBrowserVersion(ieWithoutVersion, 'IE')).toEqual(undefined);
+  });
+
+  test('if user agent is invalid', () => {
+    const emptyUserAgent = {
+      userAgent: '',
+    };
+
+    expect(detectBrowserVersion(emptyUserAgent, undefined)).toEqual(undefined);
+  });
+});
+
+describe('Should correctly detect name of', () => {
+  test('Chrome', () => {
+    const chrome = {
+      userAgent: `Mozilla/5.0 (Windows NT 10.0; Win64; x64) 
+      AppleWebKit/537.36 (KHTML, like Gecko) 
+      Chrome/62.0.3202.94 Safari/537.36`,
+    };
+
+    expect(detectBrowserVersion(chrome, 'Chrome')).toEqual(62);
+  });
+});
+
+describe('Should correctly detect version of', () => {
+  test('UC Browser', () => {
+    const ucBrowser = {
+      userAgent: `UCWEB/2.0 (Java; U; MIDP-2.0; Nokia203/20.37)
+        U2/1.0.0 UCBrowser/8.7.0.218 U2/1.0.0 Mobile`,
+    };
+
+    expect(detectBrowserVersion(ucBrowser, 'UC Browser')).toEqual(8.7);
+  });
+});

src/detect-browser-version.ts

@@ -0,0 +1,55 @@
+import { retrieveVersion } from './retrieve-version';
+import { getBrowserUaName } from './browser-detection';
+
+import type { BrowserName } from './browser-detection';
+
+/**
+ * Detects browser version
+ */
+export function detectBrowserVersion(
+  nav: {
+    userAgent: string;
+    appName?: string;
+    appVersion?: string;
+  },
+  name: BrowserName | undefined,
+): number | undefined {
+  const { userAgent } = nav;
+
+  if (name) {
+    // eslint-disable-next-line default-case, @typescript-eslint/switch-exhaustiveness-check
+    switch (name) {
+      case 'Edge': {
+        const temp = /\b(Edge)\/(\d+)/.exec(userAgent);
+        return temp ? Number(temp[2]) : undefined;
+      }
+
+      case 'IE': {
+        const temp = /\brv[ :]+(\d+)/g.exec(userAgent) ?? [];
+        return Number(temp[1]) || undefined;
+      }
+    }
+  }
+
+  const browserName = getBrowserUaName(name);
+
+  if (browserName) {
+    return retrieveVersion(browserName, userAgent);
+  }
+
+  let found =
+    /(opera|chrome|safari|firefox|msie|trident(?=\/))\/?\s*(\d+)/i.exec(
+      userAgent,
+    ) ?? [];
+
+  // eslint-disable-next-line @typescript-eslint/ban-ts-comment, @typescript-eslint/prefer-ts-expect-error
+  // @ts-ignore
+  found = found[2] ? [found[1], found[2]] : [nav.appName, nav.appVersion, '-?'];
+
+  let temp;
+  if ((temp = /version\/(\d+)/i.exec(userAgent)) !== null) {
+    found.splice(1, 1, temp[1]);
+  }
+
+  return found[1] ? Number(found[1]) : undefined;
+}

src/retrieve-version.test.ts

@@ -0,0 +1,12 @@
+import { describe, expect, test } from 'vitest';
+
+import { retrieveVersion } from './retrieve-version';
+
+describe('Should correctly eject browser version from string', () => {
+  test('Opera', () => {
+    const userAgent = `Mozilla/5.0 (Windows NT 10.0; Win64; x64) 
+          AppleWebKit/537.36 (KHTML, like Gecko) 
+          Chrome/62.0.3202.89 Safari/537.36 OPR/49.0.2725.39`;
+    expect(retrieveVersion('OPR', userAgent)).toEqual(49);
+  });
+});