fix(backendjsonrpc): fix command

packages/@postgrestools/backend-jsonrpc/src/command.ts

@@ -1,36 +1,74 @@
+import { execSync } from "node:child_process";
+
 /**
  * Gets the path of the binary for the current platform
  *
  * @returns Filesystem path to the binary, or null if no prebuilt distribution exists for the current platform
  */
 export function getCommand(): string | null {
-	const { platform, arch } = process;
-
-	type PlatformPaths = {
-		[P in NodeJS.Platform]?: {
-			[A in NodeJS.Architecture]?: string;
-		};
-	};
-
-	const PLATFORMS: PlatformPaths = {
-		win32: {
-			x64: "@postgrestools/cli-win32-x64/postgrestools.exe",
-			arm64: "@postgrestools/cli-win32-arm64/postgrestools.exe",
-		},
-		darwin: {
-			x64: "@postgrestools/cli-darwin-x64/postgrestools",
-			arm64: "@postgrestools/cli-darwin-arm64/postgrestools",
-		},
-		linux: {
-			x64: "@postgrestools/cli-linux-x64/postgrestools",
-			arm64: "@postgrestools/cli-linux-arm64/postgrestools",
-		},
-	};
-
-	const binPath = PLATFORMS?.[platform]?.[arch];
-	if (!binPath) {
-		return null;
-	}
-
-	return require.resolve(binPath);
+  const { platform, arch } = process;
+
+  const PLATFORMS: Partial<
+    Record<
+      NodeJS.Platform | "linux-musl",
+      Partial<Record<NodeJS.Architecture, string>>
+    >
+  > = {
+    win32: {
+      x64: "@postgrestools/cli-x86_64-windows-msvc/postgrestools.exe",
+      arm64: "@postgrestools/cli-aarch64-windows-msvc/postgrestools.exe",
+    },
+    darwin: {
+      x64: "@postgrestools/cli-x86_64-apple-darwin/postgrestools",
+      arm64: "@postgrestools/cli-aarch64-apple-darwin/postgrestools",
+    },
+    linux: {
+      x64: "@postgrestools/cli-x86_64-linux-gnu/postgrestools",
+      arm64: "@postgrestools/cli-aarch64-linux-gnu/postgrestools",
+    },
+    "linux-musl": {
+      x64: "@postgrestools/cli-x86_64-linux-musl/postgrestools",
+      // no arm64 build for musl
+    },
+  };
+
+  function isMusl() {
+    let stderr = "";
+    try {
+      stderr = execSync("ldd --version", {
+        stdio: [
+          "ignore", // stdin
+          "pipe", // stdout – glibc systems print here
+          "pipe", // stderr – musl systems print here
+        ],
+      }).toString();
+    } catch (err: unknown) {
+      if (hasStdErr(err)) {
+        stderr = err.stderr;
+      }
+    }
+    if (stderr.indexOf("musl") > -1) {
+      return true;
+    }
+    return false;
+  }
+
+  function getPlatform(): NodeJS.Platform | "linux-musl" {
+    if (platform === "linux") {
+      return isMusl() ? "linux-musl" : "linux";
+    }
+
+    return platform;
+  }
+
+  const binPath = PLATFORMS?.[getPlatform()]?.[arch];
+  if (!binPath) {
+    return null;
+  }
+
+  return require.resolve(binPath);
+}
+
+function hasStdErr(err: unknown): err is { stderr: string } {
+  return !!(err as any)?.stderr;
 }