From 4f61aa3d6f00db74c7b00baacb01ade59282506c Mon Sep 17 00:00:00 2001
From: Harlan Wilton <harlan@harlanzw.com>
Date: Tue, 25 Jul 2023 15:11:23 +0300
Subject: [PATCH] feat(kit): get module options with `getNuxtModuleOptions`

---
 packages/kit/src/module/compatibility.test.ts | 36 ++++++++++++++++++-
 packages/kit/src/module/compatibility.ts      | 29 +++++++++++++--
 2 files changed, 62 insertions(+), 3 deletions(-)

diff --git a/packages/kit/src/module/compatibility.test.ts b/packages/kit/src/module/compatibility.test.ts
index 6f73c07420..fa212bd964 100644
--- a/packages/kit/src/module/compatibility.test.ts
+++ b/packages/kit/src/module/compatibility.test.ts
@@ -1,6 +1,6 @@
 import { describe, expect, it } from 'vitest'
 import { loadNuxt } from '../loader/nuxt'
-import { getNuxtModuleVersion, hasNuxtModule, hasNuxtModuleCompatibility } from './compatibility'
+import { getNuxtModuleOptions, getNuxtModuleVersion, hasNuxtModule, hasNuxtModuleCompatibility } from './compatibility'
 import { defineNuxtModule } from './define'
 
 describe('nuxt module compatibility', () => {
@@ -42,4 +42,38 @@ describe('nuxt module compatibility', () => {
     expect(await hasNuxtModuleCompatibility(module, '^2.0.0', nuxt)).toStrictEqual(false)
     await nuxt.close()
   })
+
+  it('get module options string', async () => {
+    const fooModule = defineNuxtModule<{ defaultVal?: 'foo'; inlineVal?: 'bar'; number?: number }>({
+      meta: {
+        name: 'nuxt-module-foo',
+        configKey: 'foo'
+      },
+      defaults: {
+        defaultVal: 'foo'
+      }
+    })
+    const nuxt = await loadNuxt({
+      overrides: {
+        modules: [
+          [
+            fooModule,
+            {
+              inlineVal: 'bar'
+            }
+          ]
+        ],
+        // @ts-expect-error runtime
+        foo: { number: 10 }
+      }
+    })
+    expect(await getNuxtModuleOptions(fooModule, nuxt)).toStrictEqual(
+      {
+        defaultVal: 'foo',
+        inlineVal: 'bar',
+        number: 10
+      }
+    )
+    await nuxt.close()
+  })
 })
diff --git a/packages/kit/src/module/compatibility.ts b/packages/kit/src/module/compatibility.ts
index 860ed1fb76..fc3110ffa6 100644
--- a/packages/kit/src/module/compatibility.ts
+++ b/packages/kit/src/module/compatibility.ts
@@ -12,7 +12,7 @@ import { loadNuxtModuleInstance } from './install'
  */
 export function hasNuxtModule (moduleName: string, nuxt: Nuxt = useNuxt()) : boolean {
   return nuxt.options._installedModules.some(({ meta }) => meta.name === moduleName) ||
-    nuxt.options.modules.includes(moduleName)
+      nuxt.options.modules.includes(moduleName)
 }
 
 /**
@@ -40,7 +40,7 @@ export async function getNuxtModuleVersion (module: string | NuxtModule, nuxt: N
   if (!moduleMeta.name) { return false }
   // maybe the version got attached within the installed module instance?
   const version = nuxt.options._installedModules
-    // @ts-expect-error _installedModules is not typed
+  // @ts-expect-error _installedModules is not typed
     .filter(m => m.meta.name === moduleMeta.name).map(m => m.meta.version)?.[0]
   if (version) {
     return version
@@ -52,3 +52,28 @@ export async function getNuxtModuleVersion (module: string | NuxtModule, nuxt: N
   }
   return false
 }
+
+/**
+ * Get the user provided options for a Nuxt module.
+ *
+ * These options may not be the resolved options that the module actually uses.
+ */
+export async function getNuxtModuleOptions (module: string | NuxtModule, nuxt: Nuxt = useNuxt()) {
+  const moduleMeta = (typeof module === 'string' ? { name: module } : await module.getMeta?.()) || {}
+  const { nuxtModule } = (await loadNuxtModuleInstance(module, nuxt))
+  const inlineOptions = (
+    await Promise.all(
+      nuxt.options.modules
+        .filter(async (m) => {
+          if (!Array.isArray(m)) { return false }
+          const _module = m[0]
+          return typeof module === 'object'
+            ? (await (_module as any as NuxtModule).getMeta?.() === moduleMeta.name)
+            : _module === moduleMeta.name
+        })
+        .map(m => m?.[1 as keyof typeof m])
+    )
+  )[0] || {}
+  if (nuxtModule.getOptions) { return nuxtModule.getOptions(inlineOptions, nuxt) }
+  return inlineOptions
+}