diff --git a/.gitmodules b/.gitmodules
index 7250a6c86..4b66a803a 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -34,3 +34,6 @@
 [submodule "vendor/pixman"]
 	path = vendor/pixman
 	url = https://github.com/freedesktop/pixman.git
+[submodule "vendor/zig-js"]
+	path = vendor/zig-js
+	url = https://github.com/mitchellh/zig-js.git
diff --git a/build.zig b/build.zig
index 7232f1d88..207acfa06 100644
--- a/build.zig
+++ b/build.zig
@@ -7,6 +7,7 @@ const fontconfig = @import("pkg/fontconfig/build.zig");
 const freetype = @import("pkg/freetype/build.zig");
 const harfbuzz = @import("pkg/harfbuzz/build.zig");
 const imgui = @import("pkg/imgui/build.zig");
+const js = @import("vendor/zig-js/build.zig");
 const libxml2 = @import("vendor/zig-libxml2/libxml2.zig");
 const libuv = @import("pkg/libuv/build.zig");
 const libpng = @import("pkg/libpng/build.zig");
@@ -235,6 +236,11 @@ fn addDeps(
         _ = try macos.link(b, step, .{});
     }
 
+    // Wasm
+    if (step.target.getCpuArch() == .wasm32) {
+        step.addPackage(js.pkg);
+    }
+
     // We always statically compile glad
     step.addIncludePath("vendor/glad/include/");
     step.addCSourceFile("vendor/glad/src/gl.c", &.{});
diff --git a/vendor/zig-js b/vendor/zig-js
new file mode 160000
index 000000000..a6d0b5a0c
--- /dev/null
+++ b/vendor/zig-js
@@ -0,0 +1 @@
+Subproject commit a6d0b5a0c421925409f1bce542f64b9e5f6b96df