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add basic examples for database-wasm package

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This commit is contained in:
Nikita Sivukhin
2025-10-03 13:20:13 +04:00
parent 7905841990
commit b67ef8a7eb
13 changed files with 337 additions and 11 deletions
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12
bindings/javascript/examples/database-node/README.md Normal file
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# database-node
This is a minimal example showing how to use [`@tursodatabase/database`](https://www.npmjs.com/package/@tursodatabase/database) in the node.js
---
## Usage
```bash
npm install
node index.mjs
```

21
bindings/javascript/examples/database-node/index.mjs Normal file
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@@ -0,0 +1,21 @@
import { connect } from "@tursodatabase/database";
const db = await connect("local.db", {
timeout: 1000, // busy timeout for handling high-concurrency write cases
});
// execute multiple SQL statements with exec(...)
await db.exec(`
CREATE TABLE IF NOT EXISTS guestbook (comment TEXT, created_at DEFAULT (unixepoch()));
CREATE INDEX IF NOT EXISTS guestbook_idx ON guestbook (created_at);
`);
// use prepared statements and bind args to placeholders later
const insert = db.prepare(`INSERT INTO guestbook(comment) VALUES (?)`);
// use run(...) method if query only need to be executed till completion
await insert.run([`hello, turso at ${Math.floor(Date.now() / 1000)}`]);
const select = db.prepare(`SELECT * FROM guestbook ORDER BY created_at DESC LIMIT ?`);
// use all(...) or get(...) methods to get all or one row from the query
console.info(await select.all([5]))

14
bindings/javascript/examples/database-node/package.json Normal file
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@@ -0,0 +1,14 @@
{
"name": "database-node",
"version": "1.0.0",
"main": "index.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1"
},
"author": "",
"license": "ISC",
"description": "",
"dependencies": {
"@tursodatabase/database": "^0.2.0"
}
}

1
bindings/javascript/examples/database-wasm-vite/.gitignore vendored Normal file
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@@ -0,0 +1 @@
.vercel

63
bindings/javascript/examples/database-wasm-vite/README.md Normal file
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@@ -0,0 +1,63 @@
# database-wasm-vite
This is a minimal example showing how to use [`@tursodatabase/database-wasm`](https://www.npmjs.com/package/@tursodatabase/database-wasm) in the browser with [Vite](https://vite.dev/).
---
## Usage
```bash
npm install
npm run dev
# or build assets and serve them with simple node.js server
npm run build
npm run serve
```
---
## Important: COOP / COEP Headers
Because `@tursodatabase/database-wasm` relies on **SharedArrayBuffer**, you need Cross-Origin headers in development and production:
### Vite dev server config (`vite.config.js`)
```js
import { defineConfig } from 'vite'
export default defineConfig({
server: {
headers: {
'Cross-Origin-Opener-Policy': 'same-origin',
'Cross-Origin-Embedder-Policy': 'require-corp',
}
}
})
```
### Static production server (`server.mjs`)
When serving the `dist/` build, also make sure your server sets these headers:
```js
res.setHeader("Cross-Origin-Opener-Policy", "same-origin");
res.setHeader("Cross-Origin-Embedder-Policy", "require-corp");
```
### Vercel deployment
If you deploy to [**Vercel**](https://vercel.com/), add a `vercel.json` file to ensure COOP / COEP headers are set:
```json
{
"headers": [
{
"source": "/(.*)",
"headers": [
{ "key": "Cross-Origin-Opener-Policy", "value": "same-origin" },
{ "key": "Cross-Origin-Embedder-Policy", "value": "require-corp" }
]
}
]
}
```

95
bindings/javascript/examples/database-wasm-vite/index.html Normal file
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@@ -0,0 +1,95 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<title>Guestbook</title>
<style>
body {
font-family: sans-serif;
max-width: 600px;
margin: 2rem auto;
}
#comments {
border: 1px solid #ddd;
border-radius: 6px;
padding: 0;
list-style: none;
}
#comments li {
padding: 8px;
border-top: 1px solid #eee;
}
#comments li:first-child {
border-top: none;
}
.time {
font-size: 0.8em;
color: gray;
}
</style>
</head>
<body>
<h1>Guestbook</h1>
<form id="form">
<input id="comment" placeholder="Write a comment..." style="width:70%; padding:6px;" />
<button type="submit">Add</button>
</form>
<ul id="comments"></ul>
<script type="module">
import { connect } from "@tursodatabase/database-wasm/vite";
let db = await connect("local.db", {
timeout: 1000 // busy timeout for handling high-concurrency write cases
});
// execute multiple SQL statements with exec(...)
await db.exec(`
CREATE TABLE IF NOT EXISTS guestbook ( comment TEXT, created_at DEFAULT (unixepoch()) );
CREATE INDEX IF NOT EXISTS guestbook_idx ON guestbook (created_at);
`);
await refresh();
async function addComment() {
// use prepared statements and bind args to placeholders later
const insert = db.prepare(`INSERT INTO guestbook(comment) VALUES (?)`);
const input = document.getElementById("comment");
const text = input.value.trim();
input.value = "";
// use run(...) method if query only need to be executed till completion
await insert.run([text]);
await refresh();
}
document.getElementById("form").addEventListener("submit", (e) => {
e.preventDefault();
addComment();
});
async function refresh() {
const select = db.prepare(`SELECT comment, created_at FROM guestbook ORDER BY created_at DESC LIMIT ?`);
// use all(...) or get(...) methods to get all or one row from the query
const rows = await select.all([5]);
const ul = document.getElementById("comments");
ul.innerHTML = "";
rows.forEach((row) => {
const li = document.createElement("li");
li.innerHTML = `
<div>${row.comment}</div>
<div class="time">${new Date(row.created_at * 1000).toLocaleString()}</div>
`;
ul.appendChild(li);
});
}
</script>
</body>
</html>

19
bindings/javascript/examples/database-wasm-vite/package.json Normal file
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@@ -0,0 +1,19 @@
{
"name": "database-wasm-vite",
"version": "1.0.0",
"main": "index.js",
"scripts": {
"dev": "vite",
"build": "vite build",
"serve": "node server.mjs"
},
"author": "",
"license": "ISC",
"description": "",
"devDependencies": {
"vite": "^7.1.9"
},
"dependencies": {
"@tursodatabase/database-wasm": "^0.2.0"
}
}

34
bindings/javascript/examples/database-wasm-vite/server.mjs Normal file
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@@ -0,0 +1,34 @@
import http from "http";
import { readFile } from "fs/promises";
import { extname, join } from "path";
import { fileURLToPath } from "url";
const root = fileURLToPath(new URL("./dist", import.meta.url));
const port = 8080;
const mimeTypes = { ".html": "text/html", ".js": "application/javascript" };
const server = http.createServer(async (req, res) => {
// COOP / COEP headers necessary for shared WASM memory
res.setHeader("Cross-Origin-Opener-Policy", "same-origin");
res.setHeader("Cross-Origin-Embedder-Policy", "require-corp");
try {
const url = new URL(req.url, `http://${req.headers.host}`);
const pathname = url.pathname;
const filePath = pathname === "/" ? "index.html" : pathname;
const fullPath = join(root, filePath);
const data = await readFile(fullPath);
const ext = extname(fullPath).toLowerCase();
const contentType = mimeTypes[ext] || "application/octet-stream";
res.writeHead(200, { "Content-Type": contentType });
res.end(data);
} catch (err) {
res.writeHead(404, { "Content-Type": "text/plain" });
res.end("Not found");
}
});
server.listen(port, "0.0.0.0", () => console.log(`Serving on http://localhost:${port}`));

11
bindings/javascript/examples/database-wasm-vite/vercel.json Normal file
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@@ -0,0 +1,11 @@
{
"headers": [
{
"source": "/(.*)",
"headers": [
{ "key": "Cross-Origin-Opener-Policy", "value": "same-origin" },
{ "key": "Cross-Origin-Embedder-Policy", "value": "require-corp" }
]
}
]
}

10
bindings/javascript/examples/database-wasm-vite/vite.config.ts Normal file
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@@ -0,0 +1,10 @@
import { defineConfig } from 'vite'
export default defineConfig({
server: {
headers: {
'Cross-Origin-Opener-Policy': 'same-origin',
'Cross-Origin-Embedder-Policy': 'require-corp',
}
}
})

35
bindings/javascript/package-lock.json generated
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@@ -13,9 +13,28 @@
"packages/wasm",
"sync/packages/common",
"sync/packages/native",
"sync/packages/wasm"
"sync/packages/wasm",
"examples/database-node",
"examples/database-wasm-vite"
]
},
"examples/database-node": {
"version": "1.0.0",
"license": "ISC",
"dependencies": {
"@tursodatabase/database": "^0.2.0"
}
},
"examples/database-wasm-vite": {
"version": "1.0.0",
"license": "ISC",
"dependencies": {
"@tursodatabase/database-wasm": "^0.2.0"
},
"devDependencies": {
"vite": "^7.1.9"
}
},
"node_modules/@babel/code-frame": {
"version": "7.27.1",
"resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.27.1.tgz",
@@ -1656,6 +1675,14 @@
"node": ">= 12"
}
},
"node_modules/database-node": {
"resolved": "examples/database-node",
"link": true
},
"node_modules/database-wasm-vite": {
"resolved": "examples/database-wasm-vite",
"link": true
},
"node_modules/debug": {
"version": "4.4.1",
"resolved": "https://registry.npmjs.org/debug/-/debug-4.4.1.tgz",
@@ -3248,9 +3275,9 @@
"license": "MIT"
},
"node_modules/vite": {
"version": "7.1.5",
"resolved": "https://registry.npmjs.org/vite/-/vite-7.1.5.tgz",
"integrity": "sha512-4cKBO9wR75r0BeIWWWId9XK9Lj6La5X846Zw9dFfzMRw38IlTk2iCcUt6hsyiDRcPidc55ZParFYDXi0nXOeLQ==",
"version": "7.1.9",
"resolved": "https://registry.npmjs.org/vite/-/vite-7.1.9.tgz",
"integrity": "sha512-4nVGliEpxmhCL8DslSAUdxlB6+SMrhB0a1v5ijlh1xB1nEPuy1mxaHxysVucLHuWryAxLWg6a5ei+U4TLn/rFg==",
"dev": true,
"license": "MIT",
"dependencies": {

4
bindings/javascript/package.json
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@@ -12,7 +12,9 @@
"packages/wasm",
"sync/packages/common",
"sync/packages/native",
"sync/packages/wasm"
"sync/packages/wasm",
"examples/database-node",
"examples/database-wasm-vite"
],
"version": "0.2.0"
}

29
bindings/javascript/yarn.lock
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@@ -1593,7 +1593,7 @@ __metadata:
languageName: unknown
linkType: soft
"@tursodatabase/database-wasm@workspace:packages/wasm":
"@tursodatabase/database-wasm@npm:^0.2.0, @tursodatabase/database-wasm@workspace:packages/wasm":
version: 0.0.0-use.local
resolution: "@tursodatabase/database-wasm@workspace:packages/wasm"
dependencies:
@@ -1608,7 +1608,7 @@ __metadata:
languageName: unknown
linkType: soft
"@tursodatabase/database@workspace:packages/native":
"@tursodatabase/database@npm:^0.2.0, @tursodatabase/database@workspace:packages/native":
version: 0.0.0-use.local
resolution: "@tursodatabase/database@workspace:packages/native"
dependencies:
@@ -2100,6 +2100,23 @@ __metadata:
languageName: node
linkType: hard
"database-node@workspace:examples/database-node":
version: 0.0.0-use.local
resolution: "database-node@workspace:examples/database-node"
dependencies:
"@tursodatabase/database": "npm:^0.2.0"
languageName: unknown
linkType: soft
"database-wasm-vite@workspace:examples/database-wasm-vite":
version: 0.0.0-use.local
resolution: "database-wasm-vite@workspace:examples/database-wasm-vite"
dependencies:
"@tursodatabase/database-wasm": "npm:^0.2.0"
vite: "npm:^7.1.9"
languageName: unknown
linkType: soft
"debug@npm:4":
version: 4.4.3
resolution: "debug@npm:4.4.3"
@@ -3865,9 +3882,9 @@ __metadata:
languageName: node
linkType: hard
"vite@npm:^5.0.0 || ^6.0.0 || ^7.0.0-0, vite@npm:^7.1.5":
version: 7.1.5
resolution: "vite@npm:7.1.5"
"vite@npm:^5.0.0 || ^6.0.0 || ^7.0.0-0, vite@npm:^7.1.5, vite@npm:^7.1.9":
version: 7.1.9
resolution: "vite@npm:7.1.9"
dependencies:
esbuild: "npm:^0.25.0"
fdir: "npm:^6.5.0"
@@ -3916,7 +3933,7 @@ __metadata:
optional: true
bin:
vite: bin/vite.js
checksum: 10c0/782d2f20c25541b26d1fb39bef5f194149caff39dc25b7836e25f049ca919f2e2ce186bddb21f3f20f6195354b3579ec637a8ca08d65b117f8b6f81e3e730a9c
checksum: 10c0/f628f903a137c1410232558bde99c223ea00a090bda6af77752c61f912955f0050aac12d3cfe024d08a0f150ff6fab61b3d0be75d634a59b94d49f525392e1f7
languageName: node
linkType: hard