refactor: move type tests back to types/ directory

Move .test-d.ts files back to types/ to match the convention used by
other fastify ecosystem packages (fastify-cors, fastify-helmet,
fastify-rate-limit, fastify-cookie). This also avoids cross-platform
issues with node --test glob expansion on Windows and Node.js 20.

Revert test:unit script to plain `c8 --100 node --test` since
.test-d.ts files in types/ are not auto-discovered by the test runner.

Author: nahyeongjin1

package.json

@@ -38,7 +38,7 @@
     "start": "CLIMEM=8999 node -r climem ./examples/example",
     "test": "npm run test:unit && npm run test:typescript",
     "test:typescript": "tsd",
-    "test:unit": "c8 --100 node --test test/*.test.js"
+    "test:unit": "c8 --100 node --test"
   },
   "repository": {
     "type": "git",
@@ -86,7 +86,7 @@
   ],
   "license": "MIT",
   "tsd": {
-    "directory": "test/types"
+    "directory": "types"
   },
   "publishConfig": {
     "access": "public"

test/types/ajv-plugin.test-d.ts types/ajv-plugin.test-d.tstest/types/ajv-plugin.test-d.ts renamed to types/ajv-plugin.test-d.ts

@@ -1,7 +1,7 @@
 import fastify from 'fastify'
 import { expectType } from 'tsd'
 import type Ajv from 'ajv'
-import { fastifyMultipart, ajvFilePlugin } from '../..'
+import { fastifyMultipart, ajvFilePlugin } from '..'
 
 // Test: ajvFilePlugin should be compatible with Fastify's ajv.plugins option
 const app = fastify({

test/types/index.test-d.ts types/index.test-d.tstest/types/index.test-d.ts renamed to types/index.test-d.ts

@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions */
 import fastify from 'fastify'
-import fastifyMultipart, { MultipartValue, MultipartFields, MultipartFile } from '../..'
+import fastifyMultipart, { MultipartValue, MultipartFields, MultipartFile } from '..'
 import * as util from 'node:util'
 import { pipeline } from 'node:stream'
 import * as fs from 'node:fs'

test/types/named-import.test-d.ts types/named-import.test-d.tstest/types/named-import.test-d.ts renamed to types/named-import.test-d.ts

@@ -1,5 +1,5 @@
 import fastify from 'fastify'
-import { fastifyMultipart } from '../..'
+import { fastifyMultipart } from '..'
 
 const app = fastify()