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fix: ensure variance of types matches how values are used #38

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Merged
merged 1 commit into from
Sep 24, 2020
Merged

fix: ensure variance of types matches how values are used #38

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8 changes: 6 additions & 2 deletions packages/core/src/index.ts
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Original file line number Diff line number Diff line change
@@ -1,8 +1,12 @@
import { DocumentNode } from 'graphql';

export interface TypedDocumentNode<Result = { [key: string]: any }, Variables = { [key: string]: any }> extends DocumentNode {
__resultType?: Result;
__variablesType?: Variables;
/**
* This type is used to ensure that the variables you pass in to the query are assignable to Variables
* and that the Result is assignable to whatever you pass your result to. The method is never actually
* implemented, but the type is valid because we list it as optional
*/
__apiType?: (variables: Variables) => Result;
}

/**
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