Use Shopify Functions Javy plugin instead of default Javy plugin

.changeset/seven-seahorses-bake.md

@@ -0,0 +1,5 @@
+---
+'@shopify/app': minor
+---
+
+Use Shopify Functions Javy plugin instead of default Javy plugin for building JS Shopify Functions

.gitignore

@@ -155,6 +155,7 @@ packaging/dist
 cloudflared*
 function-runner*
 javy*
+shopify_functions_javy_v*.wasm
 
 # Vitest vscode extension autogenerated files
 index.d.ts

packages/app/src/cli/services/function/binaries.test.ts

@@ -135,17 +135,19 @@ describe('javy', () => {
 
 describe('javy-plugin', () => {
   test('properties are set correctly', () => {
-    expect(javyPlugin.name).toBe('javy_quickjs_provider_v3')
-    expect(javyPlugin.version).match(/^v\d.\d.\d$/)
-    expect(javyPlugin.path).toMatch(/(\/|\\)javy_quickjs_provider_v3.wasm$/)
+    expect(javyPlugin.name).toBe('shopify_functions_javy_v1')
+    expect(javyPlugin.version).match(/^v\d+$/)
+    expect(javyPlugin.path).toMatch(/(\/|\\)shopify_functions_javy_v1.wasm$/)
   })
 
   test('downloadUrl returns the correct URL', () => {
     // When
     const url = javyPlugin.downloadUrl('', '')
 
     // Then
-    expect(url).toMatch(/https:\/\/github.com\/bytecodealliance\/javy\/releases\/download\/v\d\.\d\.\d\/plugin.wasm.gz/)
+    expect(url).toMatch(
+      /^https:\/\/cdn\.shopify\.com\/shopifycloud\/shopify-functions-javy-plugin\/shopify_functions_javy_v\d+\.wasm$/,
+    )
   })
 
   test('downloads javy-plugin', async () => {

packages/app/src/cli/services/function/binaries.ts

@@ -4,6 +4,7 @@ import {outputDebug} from '@shopify/cli-kit/node/output'
 import {performActionWithRetryAfterRecovery} from '@shopify/cli-kit/common/retry'
 import {fetch} from '@shopify/cli-kit/node/http'
 import {PipelineSource} from 'stream'
+import {pipeline} from 'stream/promises'
 import stream from 'node:stream/promises'
 import fs from 'node:fs'
 import * as gzip from 'node:zlib'
@@ -13,7 +14,7 @@ const FUNCTION_RUNNER_VERSION = 'v6.3.0'
 const JAVY_VERSION = 'v4.0.0'
 // The Javy plugin version does not need to match the Javy version. It should
 // match the plugin version used in the function-runner version specified above.
-const JAVY_PLUGIN_VERSION = 'v3.2.0'
+const JAVY_PLUGIN_VERSION = 'v1'
 
 interface DownloadableBinary {
   path: string
@@ -93,17 +94,17 @@ class JavyPlugin implements DownloadableBinary {
   readonly path: string
 
   constructor() {
-    this.name = 'javy_quickjs_provider_v3'
+    this.name = 'shopify_functions_javy_v1'
     this.version = JAVY_PLUGIN_VERSION
-    this.path = joinPath(dirname(fileURLToPath(import.meta.url)), '..', 'bin', 'javy_quickjs_provider_v3.wasm')
+    this.path = joinPath(dirname(fileURLToPath(import.meta.url)), '..', 'bin', 'shopify_functions_javy_v1.wasm')
   }
 
   downloadUrl(_processPlatform: string, _processArch: string) {
-    return `https://github.com/bytecodealliance/javy/releases/download/${this.version}/plugin.wasm.gz`
+    return `https://cdn.shopify.com/shopifycloud/shopify-functions-javy-plugin/shopify_functions_javy_${JAVY_PLUGIN_VERSION}.wasm`
   }
 
   async processResponse(responseStream: PipelineSource<unknown>, outputStream: fs.WriteStream): Promise<void> {
-    return gunzipResponse(responseStream, outputStream)
+    return pipeline(responseStream, outputStream)
   }
 }