Remove wasm binding

With napi v3 we can compile our javascript binding to wasm, which can
reduce a lot of maintenance overhead and complexity

bindings/javascript/.yarnrc.yml

@@ -2,3 +2,7 @@ nodeLinker: node-modules
 
 yarnPath: .yarn/releases/yarn-4.9.2.cjs
 enableHardenedMode: false
+supportedArchitectures:
+  cpu:
+    - current
+    - wasm32

bindings/javascript/browser.js

@@ -0,0 +1 @@
+export * from '@tursodatabase/turso-wasm32-wasi'

bindings/javascript/package.json

@@ -6,19 +6,24 @@
     "url": "https://github.com/tursodatabase/turso"
   },
   "description": "The Turso database library",
-  "main": "wrapper.js",
+  "files": [
+    "wrapper.js",
+    "browser.js"
+  ],
   "types": "index.d.ts",
   "napi": {
     "binaryName": "turso",
     "targets": [
       "x86_64-unknown-linux-gnu",
       "x86_64-pc-windows-msvc",
-      "universal-apple-darwin"
+      "universal-apple-darwin",
+      "wasm32-wasip1-threads"
     ]
   },
   "license": "MIT",
   "devDependencies": {
     "@napi-rs/cli": "^3.0.4",
+    "@napi-rs/wasm-runtime": "^1.0.1",
     "ava": "^6.0.1",
     "better-sqlite3": "^11.9.1"
   },

bindings/javascript/turso.wasi-browser.js

@@ -0,0 +1,60 @@
+import {
+  createOnMessage as __wasmCreateOnMessageForFsProxy,
+  getDefaultContext as __emnapiGetDefaultContext,
+  instantiateNapiModuleSync as __emnapiInstantiateNapiModuleSync,
+  WASI as __WASI,
+} from '@napi-rs/wasm-runtime'
+
+
+
+const __wasi = new __WASI({
+  version: 'preview1',
+})
+
+const __wasmUrl = new URL('./turso.wasm32-wasi.wasm', import.meta.url).href
+const __emnapiContext = __emnapiGetDefaultContext()
+
+
+const __sharedMemory = new WebAssembly.Memory({
+  initial: 4000,
+  maximum: 65536,
+  shared: true,
+})
+
+const __wasmFile = await fetch(__wasmUrl).then((res) => res.arrayBuffer())
+
+const {
+  instance: __napiInstance,
+  module: __wasiModule,
+  napiModule: __napiModule,
+} = __emnapiInstantiateNapiModuleSync(__wasmFile, {
+  context: __emnapiContext,
+  asyncWorkPoolSize: 4,
+  wasi: __wasi,
+  onCreateWorker() {
+    const worker = new Worker(new URL('./wasi-worker-browser.mjs', import.meta.url), {
+      type: 'module',
+    })
+
+    return worker
+  },
+  overwriteImports(importObject) {
+    importObject.env = {
+      ...importObject.env,
+      ...importObject.napi,
+      ...importObject.emnapi,
+      memory: __sharedMemory,
+    }
+    return importObject
+  },
+  beforeInit({ instance }) {
+    for (const name of Object.keys(instance.exports)) {
+      if (name.startsWith('__napi_register__')) {
+        instance.exports[name]()
+      }
+    }
+  },
+})
+export default __napiModule.exports
+export const Database = __napiModule.exports.Database
+export const Statement = __napiModule.exports.Statement

bindings/javascript/turso.wasi.cjs

@@ -0,0 +1,112 @@
+/* eslint-disable */
+/* prettier-ignore */
+
+/* auto-generated by NAPI-RS */
+
+const __nodeFs = require('node:fs')
+const __nodePath = require('node:path')
+const { WASI: __nodeWASI } = require('node:wasi')
+const { Worker } = require('node:worker_threads')
+
+const {
+  createOnMessage: __wasmCreateOnMessageForFsProxy,
+  getDefaultContext: __emnapiGetDefaultContext,
+  instantiateNapiModuleSync: __emnapiInstantiateNapiModuleSync,
+} = require('@napi-rs/wasm-runtime')
+
+const __rootDir = __nodePath.parse(process.cwd()).root
+
+const __wasi = new __nodeWASI({
+  version: 'preview1',
+  env: process.env,
+  preopens: {
+    [__rootDir]: __rootDir,
+  }
+})
+
+const __emnapiContext = __emnapiGetDefaultContext()
+
+const __sharedMemory = new WebAssembly.Memory({
+  initial: 4000,
+  maximum: 65536,
+  shared: true,
+})
+
+let __wasmFilePath = __nodePath.join(__dirname, 'turso.wasm32-wasi.wasm')
+const __wasmDebugFilePath = __nodePath.join(__dirname, 'turso.wasm32-wasi.debug.wasm')
+
+if (__nodeFs.existsSync(__wasmDebugFilePath)) {
+  __wasmFilePath = __wasmDebugFilePath
+} else if (!__nodeFs.existsSync(__wasmFilePath)) {
+  try {
+    __wasmFilePath = __nodePath.resolve('@tursodatabase/turso-wasm32-wasi')
+  } catch {
+    throw new Error('Cannot find turso.wasm32-wasi.wasm file, and @tursodatabase/turso-wasm32-wasi package is not installed.')
+  }
+}
+
+const { instance: __napiInstance, module: __wasiModule, napiModule: __napiModule } = __emnapiInstantiateNapiModuleSync(__nodeFs.readFileSync(__wasmFilePath), {
+  context: __emnapiContext,
+  asyncWorkPoolSize: (function() {
+    const threadsSizeFromEnv = Number(process.env.NAPI_RS_ASYNC_WORK_POOL_SIZE ?? process.env.UV_THREADPOOL_SIZE)
+    // NaN > 0 is false
+    if (threadsSizeFromEnv > 0) {
+      return threadsSizeFromEnv
+    } else {
+      return 4
+    }
+  })(),
+  reuseWorker: true,
+  wasi: __wasi,
+  onCreateWorker() {
+    const worker = new Worker(__nodePath.join(__dirname, 'wasi-worker.mjs'), {
+      env: process.env,
+    })
+    worker.onmessage = ({ data }) => {
+      __wasmCreateOnMessageForFsProxy(__nodeFs)(data)
+    }
+
+    // The main thread of Node.js waits for all the active handles before exiting.
+    // But Rust threads are never waited without `thread::join`.
+    // So here we hack the code of Node.js to prevent the workers from being referenced (active).
+    // According to https://github.com/nodejs/node/blob/19e0d472728c79d418b74bddff588bea70a403d0/lib/internal/worker.js#L415,
+    // a worker is consist of two handles: kPublicPort and kHandle.
+    {
+      const kPublicPort = Object.getOwnPropertySymbols(worker).find(s =>
+        s.toString().includes("kPublicPort")
+      );
+      if (kPublicPort) {
+        worker[kPublicPort].ref = () => {};
+      }
+
+      const kHandle = Object.getOwnPropertySymbols(worker).find(s =>
+        s.toString().includes("kHandle")
+      );
+      if (kHandle) {
+        worker[kHandle].ref = () => {};
+      }
+
+      worker.unref();
+    }
+    return worker
+  },
+  overwriteImports(importObject) {
+    importObject.env = {
+      ...importObject.env,
+      ...importObject.napi,
+      ...importObject.emnapi,
+      memory: __sharedMemory,
+    }
+    return importObject
+  },
+  beforeInit({ instance }) {
+    for (const name of Object.keys(instance.exports)) {
+      if (name.startsWith('__napi_register__')) {
+        instance.exports[name]()
+      }
+    }
+  },
+})
+module.exports = __napiModule.exports
+module.exports.Database = __napiModule.exports.Database
+module.exports.Statement = __napiModule.exports.Statement

bindings/javascript/wasi-worker-browser.mjs

@@ -0,0 +1,32 @@
+import { instantiateNapiModuleSync, MessageHandler, WASI } from '@napi-rs/wasm-runtime'
+
+const handler = new MessageHandler({
+  onLoad({ wasmModule, wasmMemory }) {
+    const wasi = new WASI({
+      print: function () {
+        // eslint-disable-next-line no-console
+        console.log.apply(console, arguments)
+      },
+      printErr: function() {
+        // eslint-disable-next-line no-console
+        console.error.apply(console, arguments)
+      },
+    })
+    return instantiateNapiModuleSync(wasmModule, {
+      childThread: true,
+      wasi,
+      overwriteImports(importObject) {
+        importObject.env = {
+          ...importObject.env,
+          ...importObject.napi,
+          ...importObject.emnapi,
+          memory: wasmMemory,
+        }
+      },
+    })
+  },
+})
+
+globalThis.onmessage = function (e) {
+  handler.handle(e)
+}

bindings/javascript/wasi-worker.mjs

@@ -0,0 +1,63 @@
+import fs from "node:fs";
+import { createRequire } from "node:module";
+import { parse } from "node:path";
+import { WASI } from "node:wasi";
+import { parentPort, Worker } from "node:worker_threads";
+
+const require = createRequire(import.meta.url);
+
+const { instantiateNapiModuleSync, MessageHandler, getDefaultContext } = require("@napi-rs/wasm-runtime");
+
+if (parentPort) {
+  parentPort.on("message", (data) => {
+    globalThis.onmessage({ data });
+  });
+}
+
+Object.assign(globalThis, {
+  self: globalThis,
+  require,
+  Worker,
+  importScripts: function (f) {
+    ;(0, eval)(fs.readFileSync(f, "utf8") + "//# sourceURL=" + f);
+  },
+  postMessage: function (msg) {
+    if (parentPort) {
+      parentPort.postMessage(msg);
+    }
+  },
+});
+
+const emnapiContext = getDefaultContext();
+
+const __rootDir = parse(process.cwd()).root;
+
+const handler = new MessageHandler({
+  onLoad({ wasmModule, wasmMemory }) {
+    const wasi = new WASI({
+      version: 'preview1',
+      env: process.env,
+      preopens: {
+        [__rootDir]: __rootDir,
+      },
+    });
+
+    return instantiateNapiModuleSync(wasmModule, {
+      childThread: true,
+      wasi,
+      context: emnapiContext,
+      overwriteImports(importObject) {
+        importObject.env = {
+          ...importObject.env,
+          ...importObject.napi,
+          ...importObject.emnapi,
+          memory: wasmMemory
+        };
+      },
+    });
+  },
+});
+
+globalThis.onmessage = function (e) {
+  handler.handle(e);
+};

bindings/javascript/yarn.lock

@@ -1073,6 +1073,7 @@ __metadata:
   resolution: "@tursodatabase/turso@workspace:."
   dependencies:
     "@napi-rs/cli": "npm:^3.0.4"
+    "@napi-rs/wasm-runtime": "npm:^1.0.1"
     ava: "npm:^6.0.1"
     better-sqlite3: "npm:^11.9.1"
   languageName: unknown