diff --git a/src/bootstrap/src/core/build_steps/test.rs b/src/bootstrap/src/core/build_steps/test.rs
index 248d831b6e3..47b0637538b 100644
--- a/src/bootstrap/src/core/build_steps/test.rs
+++ b/src/bootstrap/src/core/build_steps/test.rs
@@ -1657,8 +1657,8 @@ fn run(self, builder: &Builder<'_>) {
         // ensure that `libproc_macro` is available on the host.
         builder.ensure(compile::Std::new(compiler, compiler.host));
 
-        // As well as the target, except for plain wasm32, which can't build it
-        if suite != "mir-opt" && !target.contains("wasm") && !target.contains("emscripten") {
+        // As well as the target
+        if suite != "mir-opt" {
             builder.ensure(TestHelpers { target });
         }
 
@@ -2511,16 +2511,7 @@ fn prepare_cargo_test(
     dylib_path.insert(0, PathBuf::from(&*builder.sysroot_libdir(compiler, target)));
     cargo.env(dylib_path_var(), env::join_paths(&dylib_path).unwrap());
 
-    if target.contains("emscripten") {
-        cargo.env(
-            format!("CARGO_TARGET_{}_RUNNER", envify(&target.triple)),
-            builder.config.nodejs.as_ref().expect("nodejs not configured"),
-        );
-    } else if target.starts_with("wasm32") {
-        let node = builder.config.nodejs.as_ref().expect("nodejs not configured");
-        let runner = format!("{} {}/src/etc/wasm32-shim.js", node.display(), builder.src.display());
-        cargo.env(format!("CARGO_TARGET_{}_RUNNER", envify(&target.triple)), &runner);
-    } else if builder.remote_tested(target) {
+    if builder.remote_tested(target) {
         cargo.env(
             format!("CARGO_TARGET_{}_RUNNER", envify(&target.triple)),
             format!("{} run 0", builder.tool_exe(Tool::RemoteTestClient).display()),
diff --git a/src/etc/wasm32-shim.js b/src/etc/wasm32-shim.js
deleted file mode 100644
index 262a53eabe3..00000000000
--- a/src/etc/wasm32-shim.js
+++ /dev/null
@@ -1,24 +0,0 @@
-// This is a small "shim" program which is used when wasm32 unit tests are run
-// in this repository. This program is intended to be run in node.js and will
-// load a wasm module into memory, instantiate it with a set of imports, and
-// then run it.
-//
-// There's a bunch of helper functions defined here in `imports.env`, but note
-// that most of them aren't actually needed to execute most programs. Many of
-// these are just intended for completeness or debugging. Hopefully over time
-// nothing here is needed for completeness.
-
-const fs = require('fs');
-const process = require('process');
-const buffer = fs.readFileSync(process.argv[2]);
-
-Error.stackTraceLimit = 20;
-
-let m = new WebAssembly.Module(buffer);
-let instance = new WebAssembly.Instance(m, {});
-try {
-  instance.exports.main();
-} catch (e) {
-  console.error(e);
-  process.exit(101);
-}
diff --git a/src/tools/compiletest/src/runtest.rs b/src/tools/compiletest/src/runtest.rs
index 9fd83c507ed..3e0021bf7c6 100644
--- a/src/tools/compiletest/src/runtest.rs
+++ b/src/tools/compiletest/src/runtest.rs
@@ -2632,9 +2632,7 @@ fn make_exe_name(&self) -> PathBuf {
         // double the length.
         let mut f = self.output_base_dir().join("a");
         // FIXME: This is using the host architecture exe suffix, not target!
-        if self.config.target.contains("emscripten") {
-            f = f.with_extra_extension("js");
-        } else if self.config.target.contains("wasm32") {
+        if self.config.target.starts_with("wasm") {
             f = f.with_extra_extension("wasm");
         } else if self.config.target.contains("spirv") {
             f = f.with_extra_extension("spv");
@@ -2649,32 +2647,6 @@ fn make_run_args(&self) -> ProcArgs {
         // then split apart its command
         let mut args = self.split_maybe_args(&self.config.runner);
 
-        // If this is emscripten, then run tests under nodejs
-        if self.config.target.contains("emscripten") {
-            if let Some(ref p) = self.config.nodejs {
-                args.push(p.into());
-            } else {
-                self.fatal("emscripten target requested and no NodeJS binary found (--nodejs)");
-            }
-        // If this is otherwise wasm, then run tests under nodejs with our
-        // shim
-        } else if self.config.target.contains("wasm32") {
-            if let Some(ref p) = self.config.nodejs {
-                args.push(p.into());
-            } else {
-                self.fatal("wasm32 target requested and no NodeJS binary found (--nodejs)");
-            }
-
-            let src = self
-                .config
-                .src_base
-                .parent()
-                .unwrap() // chop off `ui`
-                .parent()
-                .unwrap(); // chop off `tests`
-            args.push(src.join("src/etc/wasm32-shim.js").into_os_string());
-        }
-
         let exe_file = self.make_exe_name();
 
         args.push(exe_file.into_os_string());