将SvelteKit应用部署到Vercel时无法解析@Sveltejs/kit/install-fetch

错误详情 #

> Using @sveltejs/adapter-vercel
✘ [ERROR] Could not resolve "@sveltejs/kit/install-fetch"

     .svelte-kit/vercel-tmp/render/serverless.js:1:29:
       1 │ import { installFetch } from '@sveltejs/kit/install-fetch';
         ╵                              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~   The path "./install-fetch" is not exported by package "@sveltejs/kit":
     node_modules/@sveltejs/kit/package.json:59:13:
       59 │   "exports": {
          ╵              ^   You can mark the path "@sveltejs/kit/install-fetch" as external to exclude it from the
bundle, which will remove this error. error during build: Error: Build
failed with 1 error: .svelte-kit/vercel-tmp/render/serverless.js:1:29:
 ERROR: Could not resolve "@sveltejs/kit/install-fetch"
     at failureErrorWithLog (/vercel/path0/node_modules/esbuild/lib/main.js:1603:15)
     at /vercel/path0/node_modules/esbuild/lib/main.js:1249:28
     at runOnEndCallbacks (/vercel/path0/node_modules/esbuild/lib/main.js:1162:65)
     at buildResponseToResult (/vercel/path0/node_modules/esbuild/lib/main.js:1247:7)
     at /vercel/path0/node_modules/esbuild/lib/main.js:1356:14
     at /vercel/path0/node_modules/esbuild/lib/main.js:666:9
     at handleIncomingPacket (/vercel/path0/node_modules/esbuild/lib/main.js:763:9)
     at Socket.readFromStdout (/vercel/path0/node_modules/esbuild/lib/main.js:632:7)
     at Socket.emit (node:events:527:28)
     at addChunk (node:internal/streams/readable:315:12) Error: Command "npm run build" exited with 1

本地运行npm run dev正常，更新SvelteKit版本前可正常部署到Vercel。

解决步骤 #

• 同步适配器与SvelteKit版本：@sveltejs/adapter-vercel必须和@sveltejs/kit版本匹配，新版本SvelteKit已移除install-fetch导出路径，旧版适配器仍在引用该路径。执行命令更新两者到最新版：

  npm install @sveltejs/kit@latest @sveltejs/adapter-vercel@latest
  

• 清理缓存与依赖：删除自动生成的缓存文件夹和旧依赖文件，重新安装确保依赖完整性：

  rm -rf .svelte-kit node_modules package-lock.json
  npm install
  

• 本地验证构建：先在本地执行构建命令，确认问题修复后再部署到Vercel：

  npm run build
  

• 检查Vercel构建配置：确保Vercel项目的构建命令设置为npm run build，避免使用过时的自定义构建指令。

内容的提问来源于stack exchange，提问作者Nausika