feat!: ship ESM-only, drop cjs build

Author: webfansplz

AGENTS.md

@@ -12,7 +12,7 @@ Vue DevTools v9 ships two hosts over one kit and one client. The Vite plugin is
 
 ## Stack & Structure
 
-Monorepo (`pnpm` workspaces). ESM TypeScript. Library packages bundle with tsdown. Node **22.12+**, pnpm **12.5.1** (`packageManager`). Versions live in `pnpm-workspace.yaml` `catalog:` (and matching `overrides`); package entries use `"catalog:"`.
+Monorepo (`pnpm` workspaces). ESM TypeScript. Library packages bundle with tsdown and publish ESM only. Published packages require Node **22.12+**. Building this repository requires Node **22.18+ on 22.x, 24.11+ on 24.x, or 26+**, and pnpm **12.6.0** (`packageManager`). Versions live in `pnpm-workspace.yaml` `catalog:` (and matching `overrides`); package entries use `"catalog:"`.
 
 ### Packages
 

docs/help/contributing.md

@@ -4,7 +4,7 @@
 
 ## Development Setup
 
-You will need [Node.js](https://nodejs.org) **version 22.12+** and [pnpm](https://pnpm.io) **version 12.5.1**.
+Building Vue DevTools requires [Node.js](https://nodejs.org) **22.18+ on 22.x, 24.11+ on 24.x, or 26+**, and [pnpm](https://pnpm.io) **12.6.0**.
 
 We also recommend [@antfu/ni](https://github.com/antfu/ni) for switching between repositories that use different package managers. Its `nr` command makes it easier to run package scripts.
 

package.json

@@ -86,7 +86,7 @@
     "*.{json,jsonc,json5,yaml,yml,md,mdx,html,css,scss,sass,less,graphql,gql,toml}": "vp fmt"
   },
   "engines": {
-    "node": ">=22.12.0"
+    "node": "^22.18.0 || ^24.11.0 || >=26.0.0"
   },
   "packageManager": "pnpm@12.6.0"
 }

packages/devtools-api/package.json

@@ -16,29 +16,17 @@
   ],
   "type": "module",
   "sideEffects": false,
-  "main": "./dist/index.cjs",
+  "main": "./dist/index.mjs",
   "module": "./dist/index.mjs",
   "types": "./dist/index.d.mts",
   "exports": {
     ".": {
       "node": {
-        "import": {
-          "types": "./dist/index-node.d.mts",
-          "default": "./dist/index-node.mjs"
-        },
-        "require": {
-          "types": "./dist/index-node.d.cts",
-          "default": "./dist/index-node.cjs"
-        }
+        "types": "./dist/index-node.d.mts",
+        "default": "./dist/index-node.mjs"
       },
-      "import": {
-        "types": "./dist/index.d.mts",
-        "default": "./dist/index.mjs"
-      },
-      "require": {
-        "types": "./dist/index.d.cts",
-        "default": "./dist/index.cjs"
-      }
+      "types": "./dist/index.d.mts",
+      "default": "./dist/index.mjs"
     },
     "./package.json": "./package.json"
   },
@@ -51,5 +39,8 @@
   },
   "devDependencies": {
     "tsdown": "catalog:"
+  },
+  "engines": {
+    "node": ">=22.12.0"
   }
 }

packages/devtools-api/tsdown.config.ts

@@ -3,11 +3,7 @@ import { defineConfig } from 'tsdown'
 export default defineConfig({
   entry: ['src/index.ts', 'src/index-node.ts'],
   dts: true,
-  format: ['esm', 'cjs'],
+  format: 'esm',
   sourcemap: false,
   clean: true,
-  outputOptions(outputOptions, format) {
-    if (format === 'cjs') outputOptions.exports = 'named'
-    return outputOptions
-  },
 })

packages/kit/package.json

@@ -16,29 +16,17 @@
   ],
   "type": "module",
   "sideEffects": false,
-  "main": "./dist/index.cjs",
+  "main": "./dist/index.mjs",
   "module": "./dist/index.mjs",
   "types": "./dist/index.d.mts",
   "exports": {
     ".": {
-      "import": {
-        "types": "./dist/index.d.mts",
-        "default": "./dist/index.mjs"
-      },
-      "require": {
-        "types": "./dist/index.d.cts",
-        "default": "./dist/index.cjs"
-      }
+      "types": "./dist/index.d.mts",
+      "default": "./dist/index.mjs"
     },
     "./client": {
-      "import": {
-        "types": "./dist/client.d.mts",
-        "default": "./dist/client.mjs"
-      },
-      "require": {
-        "types": "./dist/client.d.cts",
-        "default": "./dist/client.cjs"
-      }
+      "types": "./dist/client.d.mts",
+      "default": "./dist/client.mjs"
     },
     "./package.json": "./package.json"
   },
@@ -51,5 +39,8 @@
   },
   "devDependencies": {
     "tsdown": "catalog:"
+  },
+  "engines": {
+    "node": ">=22.12.0"
   }
 }

packages/kit/tsdown.config.ts

@@ -3,7 +3,7 @@ import { defineConfig } from 'tsdown'
 export default defineConfig({
   entry: ['src/index.ts', 'src/client.ts'],
   dts: true,
-  format: ['esm', 'cjs'],
+  format: 'esm',
   minify: true,
   sourcemap: false,
   clean: true,

packages/vite/package.json

@@ -27,29 +27,17 @@
   ],
   "type": "module",
   "sideEffects": false,
-  "main": "./dist/index.cjs",
+  "main": "./dist/index.mjs",
   "module": "./dist/index.mjs",
   "types": "./dist/index.d.mts",
   "exports": {
     ".": {
-      "import": {
-        "types": "./dist/index.d.mts",
-        "default": "./dist/index.mjs"
-      },
-      "require": {
-        "types": "./dist/index.d.cts",
-        "default": "./dist/index.cjs"
-      }
+      "types": "./dist/index.d.mts",
+      "default": "./dist/index.mjs"
     },
     "./client": {
-      "import": {
-        "types": "./dist/client.d.mts",
-        "default": "./dist/client.mjs"
-      },
-      "require": {
-        "types": "./dist/client.d.cts",
-        "default": "./dist/client.cjs"
-      }
+      "types": "./dist/client.d.mts",
+      "default": "./dist/client.mjs"
     },
     "./package.json": "./package.json"
   },
@@ -69,5 +57,8 @@
   "peerDependencies": {
     "@vitejs/devtools": "^0.7.5",
     "vite": "^8.3.0"
+  },
+  "engines": {
+    "node": ">=22.12.0"
   }
 }

packages/vite/tsdown.config.ts

@@ -3,12 +3,8 @@ import { defineConfig } from 'tsdown'
 export default defineConfig({
   entry: ['src/index.ts', 'src/client.ts', 'src/dirs.ts'],
   dts: true,
-  format: ['esm', 'cjs'],
+  format: 'esm',
   minify: true,
   sourcemap: false,
   clean: true,
-  outputOptions(outputOptions, format) {
-    if (format === 'cjs') outputOptions.exports = 'named'
-    return outputOptions
-  },
 })