feat: support loading rc from workspace dir in global mode

.configrc

@@ -0,0 +1 @@
+testConfig=true

package.json

@@ -33,6 +33,7 @@
     "jiti": "^1.15.0",
     "mlly": "^0.5.14",
     "pathe": "^0.3.7",
+    "pkg-types": "^0.3.5",
     "rc9": "^1.2.2"
   },
   "devDependencies": {

src/loader.ts

@@ -4,6 +4,7 @@ import { resolve, extname, dirname } from 'pathe'
 import createJiti, { JITI } from 'jiti'
 import * as rc9 from 'rc9'
 import { defu } from 'defu'
+import { findWorkspaceDir } from 'pkg-types'
 import type { JITIOptions } from 'jiti/dist/types'
 import { DotenvOptions, setupDotenv } from './dotenv'
 
@@ -96,6 +97,10 @@ export async function loadConfig<T extends InputConfig=InputConfig> (opts: LoadC
   if (opts.rcFile) {
     if (opts.globalRc) {
       Object.assign(configRC, rc9.readUser({ name: opts.rcFile, dir: opts.cwd }))
+      const workspaceDir = await findWorkspaceDir(opts.cwd).catch(() => null)
+      if (workspaceDir) {
+        Object.assign(configRC, rc9.read({ name: opts.rcFile, dir: workspaceDir }))
+      }
     }
     Object.assign(configRC, rc9.read({ name: opts.rcFile, dir: opts.cwd }))
   }

test/index.test.ts

@@ -11,6 +11,7 @@ describe('c12', () => {
     const { config, layers } = await loadConfig({
       cwd: r('./fixture'),
       dotenv: true,
+      globalRc: true,
       extend: {
         extendKey: ['theme', 'extends']
       },
@@ -46,6 +47,7 @@ describe('c12', () => {
         "npmConfig": true,
         "overriden": true,
         "rcFile": true,
+        "testConfig": true,
         "virtual": true,
       }
     `)
@@ -82,6 +84,7 @@ describe('c12', () => {
         {
           "config": {
             "rcFile": true,
+            "testConfig": true,
           },
           "configFile": ".configrc",
         },