7.6.4 ESM build broken

Bug report

• [✔] I have checked other issues to make sure this is not a duplicate.

Describe the bug

Generated ESM index.js contains the following (which is identical to typings/index.d.ts):

export { IRule } from './types';
export { allow, and, chain, deny, inputRule, not, or, race, rule } from './constructors';
export { shield } from './shield';

with types.js containing:

export {};

Problems here are:

1. Empty types.js module - no IRule export.
2. Reference to './types', './constructors', and './shield' - all are missing .js extensions that are required due to relative import rules.
3. IRule is TypeScript-specific and should not be emitted in the JavaScript file to begin with…

To Reproduce

1. "type": "module" in package.json file

2. Import { IRules } from "graphql-shield". (Or pick your favorite export)

3. This is my GraphQL Schema.

Not required to reproduce the error

1. This is the invoked query

Not required to reproduce the error.

1. I use these permissions

Not required to reproduce the error.

1. This is the error I see

node:internal/errors:478
    ErrorCaptureStackTrace(err);
    ^

Error [ERR_MODULE_NOT_FOUND]: Cannot find module '.../node_modules/graphql-shield/esm/constructors' imported from .../node_modules/graphql-shield/esm/index.js
    at new NodeError (node:internal/errors:387:5)
    at finalizeResolution (node:internal/modules/esm/resolve:330:11)
    at moduleResolve (node:internal/modules/esm/resolve:907:10)
    at defaultResolve (node:internal/modules/esm/resolve:1115:11)
    at nextResolve (node:internal/modules/esm/loader:163:28)
    at ESMLoader.resolve (node:internal/modules/esm/loader:837:30)
    at ESMLoader.getModuleJob (node:internal/modules/esm/loader:424:18)
    at ModuleWrap.<anonymous> (node:internal/modules/esm/module_job:76:40)
    at link (node:internal/modules/esm/module_job:75:36) {
  code: 'ERR_MODULE_NOT_FOUND'
}```

If I add `--es-module-specifier-resolution=node` to the command line, I get:

```bash
(node:7897) ExperimentalWarning: The Node.js specifier resolution flag is experimental. It could change or be removed at any time.
(Use `node --trace-warnings ...` to show where the warning was created)
file://.../node_modules/graphql-shield/esm/index.js:3
export { IRule } from './types';
         ^^^^^
SyntaxError: The requested module './types' does not provide an export named 'IRule'
    at ModuleJob._instantiate (node:internal/modules/esm/module_job:123:21)
    at async ModuleJob.run (node:internal/modules/esm/module_job:189:5)
    at async Promise.all (index 0)
    at async ESMLoader.import (node:internal/modules/esm/loader:526:24)
    at async loadESM (node:internal/process/esm_loader:91:5)
    at async handleMainPromise (node:internal/modules/run_main:65:12)

When I keep the node resolution flag but comment out the first line of esm/index.js and run the application, it starts up fine. Without the flag, Node complains about the next module without a .js extension…

Expected behavior

The build process should produce ESM compliant code.

Actual behaviour

See the description above.

[dimatill]

the fix was released in 7.6.5 please feel free to reopen if the issue still exists

[helman]

I was having the same issue, downgrade it to v7.6.2 works for me it’s the same issue logged in here