wip: track

packages/kit/package.json

@@ -39,6 +39,7 @@
     "klona": "^2.0.6",
     "mlly": "^1.7.3",
     "ohash": "^1.1.4",
+    "on-change": "^5.0.1",
     "pathe": "^1.1.2",
     "pkg-types": "^1.3.0",
     "scule": "^1.3.0",

packages/kit/src/module/install.ts

@@ -1,6 +1,6 @@
 import { existsSync, promises as fsp, lstatSync } from 'node:fs'
 import { fileURLToPath, pathToFileURL } from 'node:url'
-import type { ModuleMeta, Nuxt, NuxtConfig, NuxtModule } from '@nuxt/schema'
+import type { ModuleMeta, Nuxt, NuxtConfig, NuxtDebugModuleMutationRecord, NuxtModule } from '@nuxt/schema'
 import { dirname, isAbsolute, join, resolve } from 'pathe'
 import { defu } from 'defu'
 import { createJiti } from 'jiti'
@@ -27,8 +27,44 @@ export async function installModule<
     }
   }
 
+  let _nuxt = nuxt
+  if (nuxt.options.debug) {
+    const onChange = await import('on-change').then(r => r.default)
+    const moduleName = (await nuxtModule.getMeta?.())?.name || buildTimeModuleMeta?.name || resolvedModulePath
+
+    // Unwrap onChange proxy if already wrapped
+    nuxt = onChange.target(nuxt)
+
+    nuxt._debug ||= {}
+    nuxt._debug.moduleMutationRecords ||= []
+
+    _nuxt = onChange(
+      nuxt,
+      (keys, value, _, applyData) => {
+        // We only listen to changes in the `options` object
+        if (keys[0] !== 'options') {
+          return
+        }
+        const record: NuxtDebugModuleMutationRecord = {
+          module: moduleName,
+          keys: keys.slice(1),
+          value,
+          timestamp: Date.now(),
+        }
+        if (applyData?.name) {
+          record.method = applyData.name
+        }
+        nuxt._debug!.moduleMutationRecords!.push(record)
+      }, {
+        ignoreUnderscores: true,
+        ignoreSymbols: true,
+        pathAsArray: true,
+      },
+    )
+  }
+
   // Call module
-  const res = await nuxtModule(inlineOptions || {}, nuxt) ?? {}
+  const res = await nuxtModule(inlineOptions || {}, _nuxt) ?? {}
   if (res === false /* setup aborted */) {
     return
   }

packages/schema/src/index.ts

@@ -8,6 +8,7 @@ export type { AppHeadMetaObject, MetaObject, MetaObjectRaw, HeadAugmentations }
 export type { ModuleDefinition, ModuleMeta, ModuleOptions, ModuleSetupInstallResult, ModuleSetupReturn, NuxtModule, ResolvedModuleOptions } from './types/module'
 export type { Nuxt, NuxtApp, NuxtPlugin, NuxtPluginTemplate, NuxtTemplate, NuxtTypeTemplate, NuxtServerTemplate, ResolvedNuxtTemplate } from './types/nuxt'
 export type { RouterConfig, RouterConfigSerializable, RouterOptions } from './types/router'
+export type { NuxtDebugContext, NuxtDebugModuleMutationRecord } from './types/debug'
 
 // Schema
 export { default as NuxtConfigSchema } from './config/index'

packages/schema/src/types/debug.ts

@@ -0,0 +1,14 @@
+export interface NuxtDebugContext {
+  /**
+   * Module mutation records to the `nuxt` instance.
+   */
+  moduleMutationRecords?: NuxtDebugModuleMutationRecord[]
+}
+
+export interface NuxtDebugModuleMutationRecord {
+  module: string | undefined
+  keys: (string | symbol)[]
+  value: any
+  method?: string
+  timestamp: number
+}

packages/schema/src/types/nuxt.ts

@@ -3,6 +3,7 @@ import type { Ignore } from 'ignore'
 import type { NuxtHooks, NuxtLayout, NuxtMiddleware, NuxtPage } from './hooks'
 import type { Component } from './components'
 import type { NuxtOptions } from './config'
+import type { NuxtDebugContext } from './debug'
 
 export interface NuxtPlugin {
   /** @deprecated use mode */
@@ -83,6 +84,7 @@ export interface Nuxt {
   _version: string
   _ignore?: Ignore
   _dependencies?: Set<string>
+  _debug?: NuxtDebugContext
 
   /** The resolved Nuxt configuration. */
   options: NuxtOptions

pnpm-lock.yaml

@@ -230,6 +230,9 @@ importers:
       ohash:
         specifier: 1.1.4
         version: 1.1.4
+      on-change:
+        specifier: ^5.0.1
+        version: 5.0.1
       pathe:
         specifier: ^1.1.2
         version: 1.1.2
@@ -1064,7 +1067,7 @@ importers:
     devDependencies:
       '@vue/devtools-api':
         specifier: latest
-        version: 7.6.8
+        version: 7.6.7
       defu:
         specifier: latest
         version: 6.1.4
@@ -1073,7 +1076,7 @@ importers:
         version: 1.5.4
       unplugin:
         specifier: latest
-        version: 2.1.2
+        version: 1.16.1
       vue:
         specifier: 3.5.13
         version: 3.5.13(typescript@5.7.2)
@@ -3038,8 +3041,8 @@ packages:
   '@vue/devtools-api@6.6.4':
     resolution: {integrity: sha512-sGhTPMuXqZ1rVOk32RylztWkfXTRhuS7vgAKv0zjqk8gbsHkJ7xfFf+jbySxt7tWObEJwyKaHMikV/WGDiQm8g==}
 
-  '@vue/devtools-api@7.6.8':
-    resolution: {integrity: sha512-ma6dY/sZR36zALVsV1W7eC57c6IJPXsy8SNgZn1PLVWU4z4dPn5TIBmnF4stmdJ4sQcixqKaQ8pwjbMPzEZwiA==}
+  '@vue/devtools-api@7.6.7':
+    resolution: {integrity: sha512-PV4I31WaV2rfA8RGauM+69uFEzWkqtP561RiLU2wK+Ce85u3zyKW3aoESlLCNzkc4y0JaJyskH6zAE3xWOP8+Q==}
 
   '@vue/devtools-core@7.6.8':
     resolution: {integrity: sha512-8X4roysTwzQ94o7IobjVcOd1aZF5iunikrMrHPI2uUdigZCi2kFTQc7ffYiFiTNaLElCpjOhCnM7bo7aK1yU7A==}
@@ -5817,6 +5820,10 @@ packages:
   ohash@1.1.4:
     resolution: {integrity: sha512-FlDryZAahJmEF3VR3w1KogSEdWX3WhA5GPakFx4J81kEAiHyLMpdLLElS8n8dfNadMgAne/MywcvmogzscVt4g==}
 
+  on-change@5.0.1:
+    resolution: {integrity: sha512-n7THCP7RkyReRSLkJb8kUWoNsxUIBxTkIp3JKno+sEz6o/9AJ3w3P9fzQkITEkMwyTKJjZciF3v/pVoouxZZMg==}
+    engines: {node: '>=18'}
+
   on-finished@2.4.1:
     resolution: {integrity: sha512-oVlzkg3ENAhCk2zdv7IJwd/QUD4z2RxRwpkcGY8psCVcCYZNq4wYnVWALHM+brtuJjePWiYF/ClmuDr8Ch5+kg==}
     engines: {node: '>= 0.8'}
@@ -6590,6 +6597,7 @@ packages:
   rollup-plugin-visualizer@5.13.1:
     resolution: {integrity: sha512-vMg8i6BprL8aFm9DKvL2c8AwS8324EgymYQo9o6E26wgVvwMhsJxS37aNL6ZsU7X9iAcMYwdME7gItLfG5fwJg==}
     engines: {node: '>=18'}
+    deprecated: Contains unintended breaking changes
     hasBin: true
     peerDependencies:
       rolldown: 1.x
@@ -7278,6 +7286,10 @@ packages:
     resolution: {integrity: sha512-5liCNPuJW8dqh3+DM6uNM2EI3MLLpCKp/KY+9pB5M2S2SR2qvvDHhKgBOaTWEbZTAws3CXfB0rKTIolWKL05VQ==}
     engines: {node: '>=14.0.0'}
 
+  unplugin@1.16.1:
+    resolution: {integrity: sha512-4/u/j4FrCKdi17jaxuJA0jClGxB1AvU2hw/IuayPc4ay1XGaJs/rbb4v5WKwAjNifjmXK9PIFyuPiaK8azyR9w==}
+    engines: {node: '>=14.0.0'}
+
   unplugin@2.0.0-beta.1:
     resolution: {integrity: sha512-2qzQo5LN2DmUZXkWDHvGKLF5BP0WN+KthD6aPnPJ8plRBIjv4lh5O07eYcSxgO2znNw9s4MNhEO1sB+JDllDbQ==}
     engines: {node: '>=18.12.0'}
@@ -10006,7 +10018,7 @@ snapshots:
       chokidar: 3.6.0
       magic-string: 0.30.17
       tinyglobby: 0.2.10
-      unplugin: 1.16.0
+      unplugin: 1.16.1
       webpack: 5.97.1(esbuild@0.24.2)
       webpack-sources: 3.2.3
     transitivePeerDependencies:
@@ -10235,7 +10247,7 @@ snapshots:
 
   '@vue/devtools-api@6.6.4': {}
 
-  '@vue/devtools-api@7.6.8':
+  '@vue/devtools-api@7.6.7':
     dependencies:
       '@vue/devtools-kit': 7.6.8
 
@@ -13547,6 +13559,8 @@ snapshots:
 
   ohash@1.1.4: {}
 
+  on-change@5.0.1: {}
+
   on-finished@2.4.1:
     dependencies:
       ee-first: 1.1.1
@@ -15247,6 +15261,11 @@ snapshots:
       acorn: 8.14.0
       webpack-virtual-modules: 0.6.2
 
+  unplugin@1.16.1:
+    dependencies:
+      acorn: 8.14.0
+      webpack-virtual-modules: 0.6.2
+
   unplugin@2.0.0-beta.1:
     dependencies:
       acorn: 8.14.0
@@ -15299,7 +15318,7 @@ snapshots:
       mlly: 1.7.3
       pathe: 1.1.2
       pkg-types: 1.3.0
-      unplugin: 1.16.0
+      unplugin: 1.16.1
 
   update-browserslist-db@1.1.0(browserslist@4.24.0):
     dependencies: