snapshot of https://github.com/zulip/zulip.git @ 48c69911c7dd4e03b20552eb3bd77ad8151c1357 (2026-09-15)

tools/setup/build_supported_browser_regex.ts

@@ -0,0 +1,32 @@
+#!/usr/bin/env node
+
+import {writeFile} from "node:fs/promises";
+import path from "node:path";
+import {fileURLToPath} from "node:url";
+
+import {getUserAgentRegex} from "browserslist-useragent-regexp";
+
+const root_dir = fileURLToPath(new URL("../..", import.meta.url));
+const output_path = path.join(root_dir, "web", "generated", "supported_browser_regex.ts");
+// Since browserlistrc is not in the root, it will not be autodetected.
+const browserslist_config = path.join(root_dir, "web", ".browserslistrc");
+
+async function main(): Promise<void> {
+    const baselineRegex = getUserAgentRegex({
+        config: browserslist_config,
+        allowHigherVersions: true,
+    });
+    const allBrowsersRegex = getUserAgentRegex({
+        browsers: ">= 0%",
+        allowHigherVersions: true,
+    });
+    const contents =
+        `// This file is generated by tools/setup/build_supported_browser_regex.ts\n` +
+        `// Do not edit this file directly.\n` +
+        `export const baselineBrowserRegex = ${baselineRegex.toString()};\n` +
+        `export const allBrowsersRegex = ${allBrowsersRegex.toString()};\n`;
+
+    await writeFile(output_path, contents);
+}
+
+await main();