Switch to new style imports.

[tomprince]

What kind of change does this PR introduce?

This adds support for importing postgrest-js as an ESM module in node.

What is the current behavior?

Currently, postgrest-js can only be imported as a CommonJS module on node (fixes #411).

Additional context

As written, this prevents imports like require("@supabase/postgrest-js/dist/main/PostgrestBuilder.js"). Node's docs suggest that this is a breaking change:

Existing packages introducing the "exports" field will prevent consumers of the package from using any entry points that are not defined, including the package.json (e.g. require('your-package/package.json'). This will likely be a breaking change.

However, I think that is only true if you consider that kind of import to be part of your public interface. The documentation does suggest a way to continue to support that kind of import if desired.

Looking at the code, the only things that could be accessed that way that aren't available from the top-level import are in src/types.ts and src/constants.ts.

---

This seems to work when I test locally, but I don't know enough about how this package is used in the wild to know if this might cause issues for other consumers.

[tomprince]

Node looks at type in the nearest package.json to tell if a .jsfile should be interpreted as an ESM or commonjs module. You can use .mjs or .cjs to specify this on a per-file basis, but typescript doesn't have any support for that. See https://github.com/azu/tsconfig-to-dual-package#motivation for more details and links to discussion about this.

I elected to put type: module in the top-level package, since my impression is that the ecosystem is slowly moving towards ESM style modules.

[tomprince]

I copied this from https://kulshekhar.github.io/ts-jest/docs/guides/esm-support, but it isn't clear to me why this isn't included in any of the presets.

[mandarini]

Hi @tomprince ! Thanks for the contribution and your patience.

This repository is deprecated and has moved to the new Supabase JS monorepo. Since this PR has been inactive for over a year, I’m going to close it to keep the old repo tidy, before archiving.

If you believe this change is still needed, please open a new PR in the monorepo and include a link back to this thread for context:

• Monorepo: https://github.com/supabase/supabase-js
• Package location: packages/core//
• Migration guide: https://github.com/supabase/supabase-js/blob/master/docs/MIGRATION.md
• Contributing guide: https://github.com/supabase/supabase-js/blob/master/CONTRIBUTING.md

Note: This old repository will be archived on October 10, 2025. Thank you again for your effort and understanding!