compile for WASM

cozo-lib-wasm/cozo_web_wasm/.bin/create-wasm-app.js

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+/*
+ * Copyright 2022, The Cozo Project Authors.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
+ * If a copy of the MPL was not distributed with this file,
+ * You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+#!/usr/bin/env node
+
+const { spawn } = require("child_process");
+const fs = require("fs");
+
+let folderName = '.';
+
+if (process.argv.length >= 3) {
+  folderName = process.argv[2];
+  if (!fs.existsSync(folderName)) {
+    fs.mkdirSync(folderName);
+  }
+}
+
+const clone = spawn("git", ["clone", "https://github.com/rustwasm/create-wasm-app.git", folderName]);
+
+clone.on("close", code => {
+  if (code !== 0) {
+    console.error("cloning the template failed!")
+    process.exit(code);
+  } else {
+    console.log("🦀 Rust + 🕸 Wasm = ❤");
+  }
+});

cozo-lib-wasm/cozo_web_wasm/.gitignore

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+node_modules
+dist

cozo-lib-wasm/cozo_web_wasm/.travis.yml

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+language: node_js
+node_js: "10"
+
+script:
+  - ./node_modules/.bin/webpack

cozo-lib-wasm/cozo_web_wasm/README.md

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+<div align="center">
+
+  <h1><code>create-wasm-app</code></h1>
+
+  <strong>An <code>npm init</code> template for kick starting a project that uses NPM packages containing Rust-generated WebAssembly and bundles them with Webpack.</strong>
+
+  <p>
+    <a href="https://travis-ci.org/rustwasm/create-wasm-app"><img src="https://img.shields.io/travis/rustwasm/create-wasm-app.svg?style=flat-square" alt="Build Status" /></a>
+  </p>
+
+  <h3>
+    <a href="#usage">Usage</a>
+    <span> | </span>
+    <a href="https://discordapp.com/channels/442252698964721669/443151097398296587">Chat</a>
+  </h3>
+
+  <sub>Built with 🦀🕸 by <a href="https://rustwasm.github.io/">The Rust and WebAssembly Working Group</a></sub>
+</div>
+
+## About
+
+This template is designed for depending on NPM packages that contain
+Rust-generated WebAssembly and using them to create a Website.
+
+* Want to create an NPM package with Rust and WebAssembly? [Check out
+  `wasm-pack-template`.](https://github.com/rustwasm/wasm-pack-template)
+* Want to make a monorepo-style Website without publishing to NPM? Check out
+  [`rust-webpack-template`](https://github.com/rustwasm/rust-webpack-template)
+  and/or
+  [`rust-parcel-template`](https://github.com/rustwasm/rust-parcel-template).
+
+## 🚴 Usage
+
+```
+npm init wasm-app
+```
+
+## 🔋 Batteries Included
+
+- `.gitignore`: ignores `node_modules`
+- `LICENSE-APACHE` and `LICENSE-MIT`: most Rust projects are licensed this way, so these are included for you
+- `README.md`: the file you are reading now!
+- `index.html`: a bare bones html document that includes the webpack bundle
+- `index.js`: example js file with a comment showing how to import and use a wasm pkg
+- `package.json` and `package-lock.json`:
+  - pulls in devDependencies for using webpack:
+      - [`webpack`](https://www.npmjs.com/package/webpack)
+      - [`webpack-cli`](https://www.npmjs.com/package/webpack-cli)
+      - [`webpack-dev-server`](https://www.npmjs.com/package/webpack-dev-server)
+  - defines a `start` script to run `webpack-dev-server`
+- `webpack.config.js`: configuration file for bundling your js with webpack
+
+## License
+
+Licensed under either of
+
+* Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+* MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+
+at your option.
+
+### Contribution
+
+Unless you explicitly state otherwise, any contribution intentionally
+submitted for inclusion in the work by you, as defined in the Apache-2.0
+license, shall be dual licensed as above, without any additional terms or
+conditions.

cozo-lib-wasm/cozo_web_wasm/bootstrap.js

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+/*
+ * Copyright 2022, The Cozo Project Authors.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
+ * If a copy of the MPL was not distributed with this file,
+ * You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+// A dependency graph that contains any wasm must all be imported
+// asynchronously. This `bootstrap.js` file does the single async import, so
+// that no one else needs to worry about it again.
+import("./index.js")
+  .catch(e => console.error("Error importing `index.js`:", e));

cozo-lib-wasm/cozo_web_wasm/index.html

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+<!--
+  ~ Copyright 2022, The Cozo Project Authors.
+  ~
+  ~ This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
+  ~ If a copy of the MPL was not distributed with this file,
+  ~ You can obtain one at https://mozilla.org/MPL/2.0/.
+  -->
+
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <title>Hello wasm-pack!</title>
+  </head>
+  <body>
+    <noscript>This page contains webassembly and javascript content, please enable javascript in your browser.</noscript>
+    <script src="./bootstrap.js"></script>
+  </body>
+</html>

cozo-lib-wasm/cozo_web_wasm/index.js

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+/*
+ * Copyright 2022, The Cozo Project Authors.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
+ * If a copy of the MPL was not distributed with this file,
+ * You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+import {CozoDb} from "cozo-lib-wasm";
+
+const db = CozoDb.new();
+console.log(db);
+
+function query(script, params) {
+    const result = JSON.parse(db.run(script, params || ''));
+    console.log(result);
+    if (result.ok) {
+        const headers = result.headers || [];
+        const rows = result.rows.map(row => {
+            let ret = {};
+            for (let i = 0; i < row.length; ++i) {
+                ret[headers[i] || `(${i})`] = row[i];
+            }
+            return ret
+        });
+        console.table(rows)
+    } else {
+        console.error(result.display || result.message)
+    }
+
+}
+
+query(`
+?[loving, loved] <- [['alice', 'eve'],
+                     ['bob', 'alice'],
+                     ['eve', 'alice'],
+                     ['eve', 'bob'],
+                     ['eve', 'charlie'],
+                     ['charlie', 'eve'],
+                     ['david', 'george'],
+                     ['george', 'george']]
+
+:replace love {loving, loved}
+`);
+
+query(`
+
+alice_love_chain[person] := *love['alice', person]
+alice_love_chain[person] := alice_love_chain[in_person], *love[in_person, person]
+
+?[chained] := alice_love_chain[chained]
+`)
+
+query(`
+?[person, page_rank] <~ PageRank(*love[])
+
+:order -page_rank
+`);
+
+query(`
+?[loved_by_e_not_b] := *love['eve', loved_by_e_not_b], not *love['bob', loved_by_e_not_b]
+`);
+
+query(`
+?[] <- [[rand_uuid_v1()]]
+`);

cozo-lib-wasm/cozo_web_wasm/package.json

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+{
+  "name": "create-wasm-app",
+  "version": "0.1.0",
+  "description": "create an app to consume rust-generated wasm packages",
+  "main": "index.js",
+  "bin": {
+    "create-wasm-app": ".bin/create-wasm-app.js"
+  },
+  "scripts": {
+    "build": "webpack --config webpack.config.js",
+    "start": "webpack-dev-server"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/rustwasm/create-wasm-app.git"
+  },
+  "keywords": [
+    "webassembly",
+    "wasm",
+    "rust",
+    "webpack"
+  ],
+  "author": "Ashley Williams <ashley666ashley@gmail.com>",
+  "license": "MPL-2.0",
+  "bugs": {
+    "url": "https://github.com/rustwasm/create-wasm-app/issues"
+  },
+  "homepage": "https://github.com/rustwasm/create-wasm-app#readme",
+  "devDependencies": {
+    "hello-wasm-pack": "^0.1.0",
+    "webpack": "^4.29.3",
+    "webpack-cli": "^3.1.0",
+    "webpack-dev-server": "^3.1.5",
+    "copy-webpack-plugin": "^5.0.0"
+  },
+  "dependencies": {
+    "cozo-lib-wasm": "file:../pkg"
+  }
+}

cozo-lib-wasm/cozo_web_wasm/webpack.config.js

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+/*
+ * Copyright 2022, The Cozo Project Authors.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
+ * If a copy of the MPL was not distributed with this file,
+ * You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+const CopyWebpackPlugin = require("copy-webpack-plugin");
+const path = require('path');
+
+module.exports = {
+  entry: "./bootstrap.js",
+  output: {
+    path: path.resolve(__dirname, "dist"),
+    filename: "bootstrap.js",
+  },
+  mode: "development",
+  plugins: [
+    new CopyWebpackPlugin(['index.html'])
+  ],
+};