fix(test): WIP: setup config so it doesn't require building packages

packages/@sanity/migrate/vitest.config.ts

@@ -1,11 +1,14 @@
 import {configDefaults, defineConfig} from 'vitest/config'
 
+import {getAliases} from '../../../vitest-aliases'
+
 export default defineConfig({
   test: {
+    alias: getAliases(),
     typecheck: {
-      exclude: [...(configDefaults.typecheck?.exclude || []), '.tmp/**'],
+      exclude: [...(configDefaults.typecheck?.exclude || []), '.tmp/**', './lib/**'],
     },
-    exclude: [...configDefaults.exclude, '.tmp/**'],
+    exclude: [...configDefaults.exclude, '.tmp/**', './lib/**'],
     includeSource: ['./src/**/*.ts'],
   },
 })

vitest-aliases.ts

@@ -0,0 +1,16 @@
+import path from 'path'
+
+import devAliases from './dev/aliases.cjs'
+
+export function getAliases() {
+  return resolveAliasPaths(devAliases)
+}
+function resolveAliasPaths(aliases: Record<string, string>) {
+  const result: Record<string, string> = {}
+
+  for (const [aliasPattern, aliasPath] of Object.entries(aliases)) {
+    result[aliasPattern] = path.resolve(__dirname, aliasPath)
+  }
+
+  return result
+}