Test playwright caching

Author: leeyi45

.github/actions/build.js

@@ -6,6 +6,7 @@ const buildCommand = getBuildCommand({
   entryPoints: [
     { in: './src/info/index.ts', out: 'info' },
     { in: './src/load-artifacts/index.ts', out: 'load' },
+    { in: './src/playwright-cache/index.ts', out: 'playwright' },
   ],
   format: 'esm',
   outdir: 'dist',

.github/actions/package.json

@@ -11,8 +11,10 @@
   },
   "dependencies": {
     "@actions/artifact": "^2.3.2",
+    "@actions/cache": "^4.0.5",
     "@actions/core": "^1.11.1",
     "@actions/exec": "^1.1.1",
+    "@actions/tool-cache": "^2.0.2",
     "lodash": "^4.17.21"
   },
   "scripts": {

.github/actions/src/playwright-cache/action.yml

@@ -0,0 +1,11 @@
+name: Playwright Cache
+description: Manages the installation of playwright and its dependencies
+
+inputs:
+  package-name:
+    required: true
+    description: Name of the package
+
+runs:
+  using: node20
+  main: ../../dist/playwright.js

.github/actions/src/playwright-cache/index.ts

@@ -0,0 +1,58 @@
+import * as core from '@actions/core';
+import { getExecOutput } from '@actions/exec';
+import * as tc from '@actions/tool-cache';
+
+interface YarnWhyEntry {
+  value: string;
+  children: {
+    [name: string]: {
+      locator: string;
+      description: string;
+    };
+  };
+}
+
+/**
+ * Given the output from `yarn why`, figure out what the installed version is
+ */
+function findInstalledVersion(entry: YarnWhyEntry) {
+  const RE = /^playwright@npm:(.+)$/;
+
+  for (const each of Object.keys(entry.children)) {
+    const match = RE.exec(each);
+    if (match) return match[1];
+  }
+
+  throw new Error('Failed to find version');
+}
+
+const RE = /^(@sourceacademy\/.+)@.+/;
+
+async function main() {
+  const { exitCode, stderr, stdout } = await getExecOutput('yarn', ['why', 'playwright', '--json'], { silent: true });
+
+  if (exitCode !== 0) {
+    core.setFailed(stderr);
+    return;
+  }
+
+  const entries = stdout.trim().split('\n').map(each => JSON.parse(each) as YarnWhyEntry);
+  const packageName = core.getInput('package-name', { required: true });
+  // const packageName = '@sourceacademy/tab-Curve';
+
+  const entry = entries.find(each => {
+    const match = RE.exec(each.value);
+    if (!match) return false;
+    const [, entryName] = match;
+    return entryName === packageName;
+  });
+
+  if (!entry) throw new Error(`${packageName} does not have playwright listed as a dependency.`);
+
+  const version = findInstalledVersion(entry);
+  const playwrightDir = tc.find('playwright', version);
+
+  console.log(playwrightDir);
+}
+
+await main();