Build error "Type instantiation is excessively deep and possibly infinite."

[nam-truong-le]

Before opening, please confirm:

• I have searched for duplicate or closed issues and discussions.
• I have read the guide for submitting bug reports.
• I have done my best to include a minimal, self-contained set of instructions for consistently reproducing the issue.

JavaScript Framework

Next.js

Amplify APIs

GraphQL API

Amplify Version

v6

Amplify Categories

api

Backend

Amplify Gen 2

Environment information

# Put output below this line
  System:
    OS: macOS 15.1.1
    CPU: (8) arm64 Apple M3
    Memory: 259.19 MB / 24.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 20.17.0 - ~/.nvm/versions/node/v20.17.0/bin/node
    npm: 10.8.2 - ~/.nvm/versions/node/v20.17.0/bin/npm
    pnpm: 9.15.0 - ~/.nvm/versions/node/v20.17.0/bin/pnpm
  Browsers:
    Chrome: 131.0.6778.109
    Safari: 18.1.1
  npmPackages:
    @aws-amplify/adapter-nextjs: 1.2.30 => 1.2.30 
    @aws-amplify/backend: 1.8.0 => 1.8.0 
    @aws-amplify/backend-cli: 1.4.2 => 1.4.2 
    @aws-amplify/ui-react: 6.7.1 => 6.7.1 
    @emotion/react: 11.13.5 => 11.13.5 
    @emotion/styled: 11.13.5 => 11.13.5 
    @fontsource/roboto: 5.1.0 => 5.1.0 
    @mui/icons-material: 6.1.10 => 6.1.10 
    @mui/material: 6.1.10 => 6.1.10 
    @reduxjs/toolkit: 2.4.0 => 2.4.0 
    @types/lodash.compact: 3.0.9 => 3.0.9 
    @types/lodash.uniq: 4.5.9 => 4.5.9 
    @types/node: 20.17.9 => 20.17.9 
    @types/react: 18.3.14 => 18.3.14 
    @types/react-dom: 18.3.2 => 18.3.2 
    aws-amplify: 6.10.2 => 6.10.2 
    aws-cdk: 2.172.0 => 2.172.0 
    aws-cdk-lib: 2.172.0 => 2.172.0 
    constructs: 10.4.2 => 10.4.2 
    dayjs: 1.11.13 => 1.11.13 
    decimal.js: 10.4.3 => 10.4.3 
    env-cmd: 10.1.0 => 10.1.0 
    envinfo: 7.14.0 => 7.14.0 
    esbuild: 0.24.0 => 0.24.0 
    lodash.compact: 3.0.1 => 3.0.1 
    lodash.uniq: 4.5.0 => 4.5.0 
    next: 14.2.20 => 14.2.20 
    prettier: 3.4.2 => 3.4.2 
    react: ^18 => 18.3.1 
    react-dom: ^18 => 18.3.1 
    react-redux: 9.1.2 => 9.1.2 
    tsx: 4.19.2 => 4.19.2 
    typescript: 5.7.2 => 5.7.2 
    uuid: 11.0.3 => 11.0.3 
  npmGlobalPackages:
    corepack: 0.29.3
    node-gyp: 10.2.0
    npm: 10.8.2

Describe the bug

I use the same selection set for client.models.Foo.onUpdate and client.models.Foo.observeQuery, the observeQuery cannot be build because of this error "Type error: Type instantiation is excessively deep and possibly infinite."

Local dev is working fine.

Expected behavior

Project can be built.

Reproduction steps

1. Create data models using hasMany, oneOf
2. Use observeQuery
3. Build the project

Code Snippet

  // this works
  useEffect(() => {
    const sub = client.models.Store.onUpdate({
      authMode: "userPool",
      selectionSet: storeAdminSelectionSet,
    }).subscribe({
      next: (item) => {
        dispatch(updateStore(item));
      },
    });

    return () => sub.unsubscribe();
  }, []);

  // here build error: "Type error: Type instantiation is excessively deep and possibly infinite."
  useEffect(() => {
    const sub = client.models.Store.observeQuery({
      authMode: "userPool",
      selectionSet: storeAdminSelectionSet,
    }).subscribe({
      next: ({ items }: { items: StoreAdmin[] }) => {
        dispatch(setStores([...items]));
      },
    });

    return () => sub.unsubscribe();
  }, []);

Log output

// Put your logs below this line

aws-exports.js

No response

Manual configuration

No response

Additional configuration

No response

Mobile Device

No response

Mobile Operating System

No response

Mobile Browser

No response

Mobile Browser Version

No response

Additional information and screenshots

No response

[nam-truong-le]

If I don't provide a selectionSet, then there is no build error.

[chrisbonifacio]

Hi @nam-truong-le 👋 can you please share the schema for all of the affected models that reproduce this issue?

When you say this is a "build error" and "local dev is working fine" can you clarify when or where exactly the error is occurring? Is it during a local build of the app (ex. npm run build) or is it during deployment after merging changes to your branch?

Does this error not occur in local dev at all? Such as when observeQuery is called at runtime?

Also please provide any build error logs if available.

[chrisbonifacio]

Hi 👋 Closing this as we have not heard back from you. If you are still experiencing this issue and in need of assistance, please feel free to comment and provide us with any information previously requested by our team members so we can re-open this issue and be better able to assist you.

Thank you!