Theo's Typesafe Cult•15mo ago

Importing mjs files in "non project/standalone" TS files

I've setup my project using create t3 app & am therefore exporting all my env variables from typesafe env.mjs file. Importing and using them works flawlessly for all "project files" but it doesn't for some standalone ts files. E.g. I have a file db/seed/seed.ts which I manually run using npm run db:seed when needed. In this file I'd like to use the DB path from my env.mjs but it gives me the following errors when using import { env } from '@/env.mjs';:

Error [ERR_REQUIRE_ESM]: require() of ES Module /.../src/env.mjs not supported. Instead change the require of /.../src/env.mjs to a dynamic import() which is available in all CommonJS modules. ...

My db:run script: npx ts-node -r tsconfig-paths/register -O {\\\"module\\\":\\\"CommonJS\\\"} db/seed/seed.ts And here's my tsconfig.json:

{
  "compilerOptions": {
    "target": "es2017",
    "lib": ["dom", "dom.iterable", "esnext"],
    "allowJs": true,
    "checkJs": true,
    "skipLibCheck": true,
    "strict": true,
    "forceConsistentCasingInFileNames": true,
    "noEmit": true,
    "esModuleInterop": true,
    "module": "esnext",
    "moduleResolution": "node",
    "resolveJsonModule": true,
    "isolatedModules": true,
    "jsx": "preserve",
    "incremental": true,
    "noUncheckedIndexedAccess": true,
    "baseUrl": ".",
    "paths": {
      "@/*": ["./src/*"]
    }
  },
  "include": [".eslintrc.cjs", "next-env.d.ts", "**/*.ts", "**/*.tsx", "**/*.cjs", "**/*.mjs"],
  "exclude": ["node_modules"]
}

{
  "compilerOptions": {
    "target": "es2017",
    "lib": ["dom", "dom.iterable", "esnext"],
    "allowJs": true,
    "checkJs": true,
    "skipLibCheck": true,
    "strict": true,
    "forceConsistentCasingInFileNames": true,
    "noEmit": true,
    "esModuleInterop": true,
    "module": "esnext",
    "moduleResolution": "node",
    "resolveJsonModule": true,
    "isolatedModules": true,
    "jsx": "preserve",
    "incremental": true,
    "noUncheckedIndexedAccess": true,
    "baseUrl": ".",
    "paths": {
      "@/*": ["./src/*"]
    }
  },
  "include": [".eslintrc.cjs", "next-env.d.ts", "**/*.ts", "**/*.tsx", "**/*.cjs", "**/*.mjs"],
  "exclude": ["node_modules"]
}

I know that this is not an issue with "create t3" itself, but I thought that you guys probably know best how to solve this since you know the structure of those env.mjs files & why they are built that way etc. I'd really appreciate any input on how to solve this & make env.mjs available in my standalone TS files as well!

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Importing mjs files in "non project/standalone" TS files