Extending a type with mergeTypeDefs throws away the repeatable definition on a schema directive #6505
Description
Describe the bug
mergeTypeDefs ignores repeatable...sometimes
To Reproduce Steps to reproduce the behavior:
StackBlitz: https://stackblitz.com/edit/stackblitz-starters-ydtdvx?file=index.mjs
import { mergeTypeDefs } from '@graphql-tools/merge';
const td0 = `directive @foo(person: String) repeatable on OBJECT`;
const td1 = `
type Foo @foo(person: "alice") @foo(person: "bob"){
hello: String
}
`;
const td2 = `
extend type Foo {
goodbye: String
}
`;
console.log(
'directive count:',
mergeTypeDefs([td1]).definitions.find(
(d) => d.kind === 'ObjectTypeDefinition' && d.name.value === 'Foo'
).directives.length
); // directive count: 2 ✅
console.log(
'directive count:',
mergeTypeDefs([td0, td1, td2]).definitions.find(
(d) => d.kind === 'ObjectTypeDefinition' && d.name.value === 'Foo'
).directives.length
); // directive count: 2 ✅
console.log(
'directive count:',
mergeTypeDefs([td1, td2]).definitions.find(
(d) => d.kind === 'ObjectTypeDefinition' && d.name.value === 'Foo'
).directives.length
); // directive count: 1 ❌Expected behavior
Should be directive count: 2 in all test cases.
Environment:
"@graphql-tools/merge": "9.0.7"