The option ignoreSemanticConventions is ignored

[cheub]

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• 1. The issue provides a reproduction available on
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Make sure to fork this template and run yarn generate in the terminal.

Please make sure Mesh package versions under package.json matches yours.

• 2. A failing test has been provided
• 3. A local solution has been provided
• 4. A pull request is pending review

---

Describe the bug

As reported in #7869 the option ignoreSemanticConventions (and also alwaysAddTransportDirective) is ignored. There has been a fix with commit 56e7b60, but that is only effective if the mesh configuration contains the option 'subgraph'

export const composeConfig = defineConfig({ ignoreSemanticConventions: true, subgraph: 'something' })

To Reproduce Steps to reproduce the behavior:

Use this mesh.config.ts

import { defineConfig, loadGraphQLHTTPSubgraph } from '@graphql-mesh/compose-cli'
export const composeConfig = defineConfig({
    ignoreSemanticConventions: true,
    subgraphs: [
        {
            sourceHandler: loadGraphQLHTTPSubgraph('Books', {
                endpoint: 'http://localhost:8080/graphql',
                source: 'book.graphqls'
            }),
        },
    ]
})

and this book.graphqls subgraph

type Query {
    book(id: ID!): Book
}

type Book {
    id: ID!
}

When generating the supergraph with npx mesh-compose -o supergraph.graphql it should not contain any merge directives, but it does:

type Query @join__type(graph: BOOKS)  {
  book(id: ID!) : Book @merge(subgraph: "Books", keyField: "id", keyArg: "id") 
}

Expected behavior

With ignoreSemanticConventions set to true no merge directives should be added automatically.

Environment:

• OS: win11
• @graphql-mesh/compose-cli: 1.4.12
• NodeJS: 24.0.2

Additional context

I am not a js developer but I think the provided patch could resolve the issue.

fix(compose-cli)__pass_down_ignoreSemanticConventions_and_alwaysAddTransportDirective.patch

[ardatan]

PRs are welcome with a failing test! Thanks for creating the issue!

Note: alwaysAddTransportDirective is not a public option. It is a low-level option.