How to ship in CJS format when my package has pure ESM package dependencies?

[holazz]

index.ts:

import ora from 'ora'

const spinner = ora('Starting...').start()
spinner.succeed('Done!')

run tsup index.ts --format cjs,esm && node dist/index.js and get error:

var import_ora = __toESM(require("ora"));
                         ^

Error [ERR_REQUIRE_ESM]: require() of ES Module /Users/zhangjiawei/Desktop/github-downloader/node_modules/.pnpm/ora@6.1.0/node_modules/ora/index.js from /Users/zhangjiawei/Desktop/github-downloader/dist/index.js not supported.
Instead change the require of /Users/zhangjiawei/Desktop/github-downloader/node_modules/.pnpm/ora@6.1.0/node_modules/ora/index.js in /Users/zhangjiawei/Desktop/github-downloader/dist/index.js to a dynamic import() which is available in all CommonJS modules.
    at Object.<anonymous> (/Users/zhangjiawei/Desktop/github-downloader/dist/index.js:47:26) {
  code: 'ERR_REQUIRE_ESM'
}

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[9oelM]

Well I had to wrap it around my head for this problem, and the solution was not using CJS format but just go with ESM. It takes too much effort to convert all child node_modules into CJS if they are indeed ESM because I gotta use some extra tools like babel or whatnot. Tried all of that and it didn't work.

The annoying ERR_REQUIRE_ESM error disappears when you do:

tsup index.ts --format esm 

npm i -g ts-node

node --loader=ts-node/esm dist/index.mjs

Note that you are using index.mjs, not index.js.

[egoist]

@9oelM that's one way to do it, you can also just bundle the pure esm packages if you want.

[OmgImAlexis]

All you need todo is install ora as a dev dep and you're good to go.

Any time you see a dep that's ESM simply use npm i -D instead of npm i and then tsup will bundle it and everything will be good.

[holazz]

Thanks, I wish to ship both cjs and esm format, I have tried all these ways, and finally, I switched to the 5.x version of ora.