feat(nitro): support importing/inlining wasm binaries (#693)

examples/wasm/package.json

@@ -0,0 +1,12 @@
+{
+  "name": "example-wasm",
+  "private": true,
+  "devDependencies": {
+    "nuxt3": "latest"
+  },
+  "scripts": {
+    "dev": "nuxt dev",
+    "build": "nuxt build",
+    "start": "node .output/server/index.mjs"
+  }
+}

examples/wasm/server/api/hello.ts

@@ -0,0 +1,9 @@
+import sample from './sample.wasm'
+
+export default async () => {
+  const { instance } = await sample({})
+
+  return {
+    result: instance.exports.main()
+  }
+}

packages/nitro/package.json

@@ -25,6 +25,7 @@
     "@rollup/plugin-node-resolve": "^13.0.5",
     "@rollup/plugin-replace": "^3.0.0",
     "@rollup/plugin-virtual": "^2.0.3",
+    "@rollup/plugin-wasm": "^5.1.2",
     "@rollup/pluginutils": "^4.1.1",
     "@types/jsdom": "^16.2.13",
     "@vercel/nft": "^0.15.1",

packages/nitro/src/rollup/config.ts

@@ -10,6 +10,7 @@ import alias from '@rollup/plugin-alias'
 import json from '@rollup/plugin-json'
 import replace from '@rollup/plugin-replace'
 import virtual from '@rollup/plugin-virtual'
+import wasmPlugin from '@rollup/plugin-wasm'
 import inject from '@rollup/plugin-inject'
 import analyze from 'rollup-plugin-analyzer'
 import * as unenv from 'unenv'
@@ -141,6 +142,9 @@ export const getRollupConfig = (nitroContext: NitroContext) => {
   // Raw asset loader
   rollupConfig.plugins.push(raw())
 
+  // WASM import support
+  rollupConfig.plugins.push(wasmPlugin())
+
   // https://github.com/rollup/plugins/tree/master/packages/replace
   rollupConfig.plugins.push(replace({
     // @ts-ignore https://github.com/rollup/plugins/pull/810

yarn.lock

@@ -2613,6 +2613,7 @@ __metadata:
     "@rollup/plugin-node-resolve": ^13.0.5
     "@rollup/plugin-replace": ^3.0.0
     "@rollup/plugin-virtual": ^2.0.3
+    "@rollup/plugin-wasm": ^5.1.2
     "@rollup/pluginutils": ^4.1.1
     "@types/debounce": ^1.2.1
     "@types/fs-extra": ^9.0.13
@@ -3259,6 +3260,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@rollup/plugin-wasm@npm:^5.1.2":
+  version: 5.1.2
+  resolution: "@rollup/plugin-wasm@npm:5.1.2"
+  peerDependencies:
+    rollup: ^1.20.0 || ^2.0.0
+  checksum: ba8d02fd351900b7e1fa722b7f71cf420dd5b67dcade3bf91f7ac60d75fca1fc4ed61ff5cecfe033dc9bfd7f857ab374d6858de74fcf5fae3acebfbc193ffa01
+  languageName: node
+  linkType: hard
+
 "@rollup/pluginutils@npm:^3.0.4, @rollup/pluginutils@npm:^3.0.8, @rollup/pluginutils@npm:^3.1.0":
   version: 3.1.0
   resolution: "@rollup/pluginutils@npm:3.1.0"
@@ -9246,6 +9256,14 @@ __metadata:
   languageName: unknown
   linkType: soft
 
+"example-wasm@workspace:examples/wasm":
+  version: 0.0.0-use.local
+  resolution: "example-wasm@workspace:examples/wasm"
+  dependencies:
+    nuxt3: latest
+  languageName: unknown
+  linkType: soft
+
 "example-with-components@workspace:examples/with-components":
   version: 0.0.0-use.local
   resolution: "example-with-components@workspace:examples/with-components"