initial WASI support

.gitea/workflows/build.yaml

@@ -23,6 +23,7 @@ jobs:
       - run: ln -s /usr/local/zig-linux-${ARCH}-${ZIG_VERSION}/zig /usr/local/bin/zig
       - run: zig build test
       - run: zig build test -Dtarget=arm-linux # we want to know we can build for 32 bit 
+      - run: zig build test -Dtarget=wasm32-wasi # downstream needs this for CF workers
       - name: Notify
         uses: https://git.lerch.org/lobo/action-notify-ntfy@v2
         if: always()

src/lambda_build.zig

@@ -103,7 +103,7 @@ pub fn configureBuild(b: *std.build.Builder, exe: *std.Build.Step.Compile) !void
         const iam_role_file = b.getInstallPath(.bin, "iam_role");
 
         if (!fileExists(iam_role_file)) {
-            std.debug.print("file does not exist", .{});
+            // std.debug.print("file does not exist", .{});
             // Our cache file does not exist on disk, so we'll create/get the role
             // arn using the AWS CLI and dump to disk here
             const ifstatement_fmt =

src/universal_lambda.zig

@@ -5,9 +5,14 @@ pub const HandlerFn = *const fn (std.mem.Allocator, []const u8, Context) anyerro
 
 const log = std.log.scoped(.universal_lambda);
 
-// TODO: Should this be union?
+const FakeResponse = struct {
+    request: struct {
+        target: []const u8,
+        headers: std.http.Headers,
+    },
+};
 pub const Context = union(enum) {
-    web_request: *std.http.Server.Response,
+    web_request: if (build_options.build_type == .exe_run) *FakeResponse else *std.http.Server.Response,
     flexilib: struct {
         request: flexilib.ZigRequest,
         response: flexilib.ZigResponse,