add evaluator component and deploy workflow

Author: tsammeow

.github/workflows/build-deploy.yml

@@ -0,0 +1,56 @@
+name: Build and deploy runner
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build:
+    name: Build runner
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Enable corepack
+        run: corepack enable
+
+      - name: Setup node
+        uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          cache: yarn
+
+      - name: yarn install
+        run: yarn install --immutable
+
+      - name: yarn build
+        run: yarn build
+
+      - name: Upload artifacts
+        id: deployment
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: dist/
+
+  deploy:
+    needs: build
+
+    name: Deploy runner
+
+    permissions:
+      pages: write
+      id-token: write
+
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4

package.json

@@ -46,7 +46,7 @@
   },
   "scripts": {
     "build": "yarn docs && yarn build:slang",
-    "build:slang": "tsc --project tsconfig.prod.json",
+    "build:slang": "rollup -c",
     "prepack": "yarn build",
     "eslint": "eslint src",
     "format": "prettier --write \"src/**/*.{ts,tsx}\"",
@@ -64,12 +64,20 @@
   "devDependencies": {
     "@babel/core": "^7.26.10",
     "@babel/preset-env": "^7.23.2",
+    "@rollup/plugin-alias": "^5.1.0",
+    "@rollup/plugin-commonjs": "^26.0.1",
+    "@rollup/plugin-json": "^6.1.0",
+    "@rollup/plugin-node-resolve": "^16.0.0",
+    "@rollup/plugin-terser": "^0.4.4",
+    "@rollup/plugin-typescript": "^12.1.2",
     "@types/babel__core": "^7",
     "@types/jest": "^29.0.0",
     "@types/lodash": "^4.14.202",
     "@types/node": "^20.0.0",
     "@types/offscreencanvas": "^2019.7.0",
+    "@types/path-browserify": "^1.0.1",
     "ace-builds": "~1.17.0",
+    "conductor": "https://github.com/source-academy/conductor.git#0.2.1",
     "coveralls": "^3.1.0",
     "escodegen": "^2.0.0",
     "eslint": "^8.57.0",
@@ -81,9 +89,13 @@
     "jest-html-reporter": "^3.2.0",
     "jsdoc": "3.6.11",
     "jsdom": "^19.0.0",
+    "path-browserify": "^1.0.1",
     "prettier": "^3.5.2",
+    "rollup": "^4.34.1",
+    "rollup-plugin-polyfill-node": "^0.13.0",
     "ts-jest": "^29.0.0",
-    "typescript": "^4.0.3",
+    "tslib": "^2.8.1",
+    "typescript": "^5.5.3",
     "typescript-eslint": "^8.8.1"
   },
   "devEngines": {
@@ -111,17 +123,14 @@
     "testRegex": "/__tests__/.*\\.ts$",
     "testPathIgnorePatterns": [
       "/dist/",
-      "/src/alt-langs/scheme/scm-slang",
       ".*benchmark.*",
       "/__tests__/(.*/)?utils\\.ts"
     ],
     "coveragePathIgnorePatterns": [
       "/dist/",
       "/node_modules/",
       "/src/typings/",
-      "/src/utils/testing.ts",
-      "/src/alt-langs/scheme/scm-slang",
-      "/src/py-slang/"
+      "/src/utils/testing.ts"
     ],
     "reporters": [
       "default",

rollup.config.mjs

@@ -0,0 +1,18 @@
+import alias from "@rollup/plugin-alias";
+import commonjs from "@rollup/plugin-commonjs";
+import json from "@rollup/plugin-json";
+import nodeResolve from "@rollup/plugin-node-resolve";
+import terser from "@rollup/plugin-terser";
+import typescript from "@rollup/plugin-typescript";
+import nodePolyfills from "rollup-plugin-polyfill-node";
+
+export default {
+    plugins: [alias({ entries: [{ find: "path", replacement: "path-browserify" }] }), nodeResolve(), commonjs(), typescript(), json(), nodePolyfills()],
+    input: "src/evaluator.ts",
+    output: {
+        plugins: [terser()],
+        dir: "dist",
+        format: "iife",
+        sourcemap: true,
+    }
+}

src/evaluator.ts

@@ -0,0 +1,41 @@
+import { BasicEvaluator } from "conductor/dist/conductor/runner";
+import { IRunnerPlugin } from "conductor/dist/conductor/runner/types";
+import { initialise } from "conductor/dist/conductor/runner/util";
+import { Context, runInContext, createContext } from "./index";
+import { Value, Chapter, Variant } from "./types";
+
+class JsSlangEvaluator extends BasicEvaluator {
+    private ctx: Context;
+
+    async evaluateChunk(chunk: string): Promise<void> {
+        const res = await runInContext(chunk, this.ctx);
+        if (res.status === "error") {
+            console.error(res);
+        } else {
+            this.ctx = res.context;
+            if (res.status === "finished") return res.value;
+        }
+    }
+
+    constructor(conductor: IRunnerPlugin) {
+        super(conductor);
+
+        const rawDisplay = (value: Value, str: string, _externalContext: any) => {
+            this.conductor.sendOutput((str === undefined ? '' : str + ' ') + String(value));
+            return value;
+        };
+
+        this.ctx = createContext(Chapter.SOURCE_4, Variant.DEFAULT, undefined, [], undefined, {
+            rawDisplay: rawDisplay,
+            prompt: rawDisplay,
+            alert: rawDisplay,
+            visualiseList: (_v: Value) => {
+            throw new Error('List visualizer is not enabled')
+            }
+        });
+
+        console.log("Evaluator initialised!");
+    }
+}
+
+initialise(JsSlangEvaluator);