perf: Downgrade esbuild so a single version is shared between sub-dependencies

packages/wxt/e2e/tests/npm-packages.test.ts

@@ -0,0 +1,40 @@
+import { test, expect } from 'vitest';
+import spawn from 'nano-spawn';
+import {
+  NpmListDependency,
+  NpmListProject,
+} from '../../src/core/package-managers/npm';
+
+// Tests to ensure the total size of the WXT module is as small as possible
+// https://pkg-size.dev/wxt
+
+test('Only one version of esbuild should be installed (each version is ~20mb of node_modules)', async () => {
+  const { stdout } = await spawn('pnpm', [
+    'why',
+    'esbuild',
+    '--prod',
+    '--json',
+  ]);
+  const projects: NpmListProject[] = JSON.parse(stdout);
+  const esbuildVersions = new Set<string>();
+  iterateDependencies(projects, (name, meta) => {
+    if (name === 'esbuild') esbuildVersions.add(meta.version);
+  });
+
+  expect([...esbuildVersions]).toHaveLength(1);
+});
+
+function iterateDependencies(
+  projects: NpmListProject[],
+  cb: (name: string, meta: NpmListDependency) => void,
+) {
+  const recurse = (dependencies: Record<string, NpmListDependency>) => {
+    Object.entries(dependencies).forEach(([name, meta]) => {
+      cb(name, meta);
+      if (meta.dependencies) recurse(meta.dependencies);
+    });
+  };
+  projects.forEach((project) => {
+    if (project.dependencies) recurse(project.dependencies);
+  });
+}

packages/wxt/package.json

@@ -96,7 +96,7 @@
     "defu": "^6.1.4",
     "dequal": "^2.0.3",
     "dotenv": "^16.4.5",
-    "esbuild": "^0.24.0",
+    "esbuild": "^0.21.5",
     "fast-glob": "^3.3.2",
     "filesize": "^10.1.6",
     "fs-extra": "^11.2.0",