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[ERR_REQUIRE_ESM]: require() of ES Module

See original GitHub issue

Hey, it’s me again. I tried to write an SEO library for rakkas and I found that I could migrate next-seo over, so I modified the bundle way of next-seo library and released a version. But I ran into some problems and got an error in SSR. error [ERR_REQUIRE_ESM]: require() of ES Module, in CSR ta is working.

Error [ERR_REQUIRE_ESM]: require() of ES Module /Users/innei/git/demo/rakkasjs-demo/node_modules/.pnpm/rakkasjs@0.6.0_yogrrpwgdz2zmfozuavyhqdpum/node_modules/rakkasjs/dist/server.js from /Users/innei/git/demo/rakkasjs-demo/node_modules/.pnpm/rakkas-seo@0.6.0-4_rakkasjs@0.6.0/node_modules/rakkas-seo/lib/meta/defaultSEO.js not supported.
Instead change the require of server.js in /Users/innei/git/demo/rakkasjs-demo/node_modules/.pnpm/rakkas-seo@0.6.0-4_rakkasjs@0.6.0/node_modules/rakkas-seo/lib/meta/defaultSEO.js to a dynamic import() which is available in all CommonJS modules.
    at Object.<anonymous> (/Users/innei/git/demo/rakkasjs-demo/node_modules/.pnpm/rakkas-seo@0.6.0-4_rakkasjs@0.6.0/node_modules/rakkas-seo/lib/meta/defaultSEO.js:29:20)
    at Object.<anonymous> (/Users/innei/git/demo/rakkasjs-demo/node_modules/.pnpm/rakkas-seo@0.6.0-4_rakkasjs@0.6.0/node_modules/rakkas-seo/lib/index.js:7:20)
    at async Promise.all (index 0)
    at async nodeImport (file:///Users/innei/git/demo/rakkasjs-demo/node_modules/.pnpm/vite@3.0.9/node_modules/vite/dist/node/chunks/dep-0fc8e132.js:50619:21)
    at async eval (/src/routes/index.page.tsx:10:31)
    at async instantiateModule (file:///Users/innei/git/demo/rakkasjs-demo/node_modules/.pnpm/vite@3.0.9/node_modules/vite/dist/node/chunks/dep-0fc8e132.js:50548:9) {
  code: 'ERR_REQUIRE_ESM'
}

My repo is here. https://github.com/Innei/rakkas-seo.

The library entry I wrote as:

// package.json
"main": "lib/index.js", // cjs
  "module": "esm/index.js", // esm
  "unpkg": "lib/index.js",
  "types": "types/index.d.ts",

Issue Analytics

State:
Created a year ago
Comments:10 (3 by maintainers)

Top GitHub Comments

1reaction

Inneicommented, Sep 4, 2022

Thanks, solve my issue.

1reaction

cyco130commented, Sep 4, 2022

Oh, got it. You’re using Rakkas from your own lib. Then you’ll have to add ssr: noExternal: ["mylib"] to your vite.config. Rakkas is a “special” library that has to be processed by Vite. If you’re using it from your own lib, then your lib has to be processed by it too. That’s what noExternal does.

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