| 1 | import { ExecutionRequest } from '@graphql-tools/utils';
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| 2 | /**
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| 3 | * Merge multiple queries into a single query in such a way that query results
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| 4 | * can be split and transformed as if they were obtained by running original queries.
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| 5 | *
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| 6 | * Merging algorithm involves several transformations:
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| 7 | * 1. Replace top-level fragment spreads with inline fragments (... on Query {})
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| 8 | * 2. Add unique aliases to all top-level query fields (including those on inline fragments)
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| 9 | * 3. Prefix all variable definitions and variable usages
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| 10 | * 4. Prefix names (and spreads) of fragments
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| 11 | *
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| 12 | * i.e transform:
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| 13 | * [
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| 14 | * `query Foo($id: ID!) { foo, bar(id: $id), ...FooQuery }
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| 15 | * fragment FooQuery on Query { baz }`,
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| 16 | *
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| 17 | * `query Bar($id: ID!) { foo: baz, bar(id: $id), ... on Query { baz } }`
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| 18 | * ]
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| 19 | * to:
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| 20 | * query (
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| 21 | * $graphqlTools1_id: ID!
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| 22 | * $graphqlTools2_id: ID!
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| 23 | * ) {
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| 24 | * graphqlTools1_foo: foo,
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| 25 | * graphqlTools1_bar: bar(id: $graphqlTools1_id)
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| 26 | * ... on Query {
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| 27 | * graphqlTools1__baz: baz
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| 28 | * }
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| 29 | * graphqlTools1__foo: baz
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| 30 | * graphqlTools1__bar: bar(id: $graphqlTools1__id)
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| 31 | * ... on Query {
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| 32 | * graphqlTools1__baz: baz
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| 33 | * }
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| 34 | * }
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| 35 | */
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| 36 | export declare function mergeRequests(requests: Array<ExecutionRequest>, extensionsReducer: (mergedExtensions: Record<string, any>, request: ExecutionRequest) => Record<string, any>): ExecutionRequest;
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