From a85224999d89425e3f1cde3c792a90a49ce9642f Mon Sep 17 00:00:00 2001
From: Sunil Pai <spai@cloudflare.com>
Date: Tue, 14 Dec 2021 22:27:38 +0000
Subject: [PATCH] support importing `.wasm` files / `workers-rs` support

Following up from https://github.com/cloudflare/wrangler2/pull/107, this PR adds support for importing `.wasm` files. Specifically, it works directly on the output of [`workers-rs`](https://github.com/cloudflare/workers-rs). I'll test with other wasm outputs (like assemblyscript etc) later.
---
 .changeset/thin-terms-walk.md              | 5 +++++
 packages/wrangler/src/module-collection.ts | 5 +++--
 2 files changed, 8 insertions(+), 2 deletions(-)
 create mode 100644 .changeset/thin-terms-walk.md

diff --git a/.changeset/thin-terms-walk.md b/.changeset/thin-terms-walk.md
new file mode 100644
index 000000000000..a14df9a55581
--- /dev/null
+++ b/.changeset/thin-terms-walk.md
@@ -0,0 +1,5 @@
+---
+"wrangler": patch
+---
+
+support importing `.wasm` files / `workers-rs` support
diff --git a/packages/wrangler/src/module-collection.ts b/packages/wrangler/src/module-collection.ts
index 5d0efac7a124..1ebfa8e3073b 100644
--- a/packages/wrangler/src/module-collection.ts
+++ b/packages/wrangler/src/module-collection.ts
@@ -30,10 +30,11 @@ export default function makeModuleCollector(): {
         build.onResolve(
           // filter on "known" file types,
           // we can expand this list later
-          { filter: /.*\.(pem|txt|html)$/ },
+          { filter: /.*\.(pem|txt|html|wasm)$/ },
           async (args: esbuild.OnResolveArgs) => {
             // take the file and massage it to a
             // transportable/manageable format
+            const fileExt = path.extname(args.path);
             const filePath = path.join(args.resolveDir, args.path);
             const fileContent = await readFile(filePath);
             const fileHash = crypto
@@ -46,7 +47,7 @@ export default function makeModuleCollector(): {
             modules.push({
               name: fileName,
               content: fileContent,
-              type: "text",
+              type: fileExt === ".wasm" ? "compiled-wasm" : "text",
             });
 
             return {