@apollo/client/utilities/internal/getFragmentFromSelection.js

A fully-featured caching GraphQL client.

import { invariant } from "@apollo/client/utilities/invariant";
/**
* @internal
* 
* @deprecated This is an internal API and should not be used directly. This can be removed or changed at any time.
*/
export function getFragmentFromSelection(selection, fragmentMap) {
    switch (selection.kind) {
        case "InlineFragment":
            return selection;
        case "FragmentSpread": {
            const fragmentName = selection.name.value;
            if (typeof fragmentMap === "function") {
                return fragmentMap(fragmentName);
            }
            const fragment = fragmentMap && fragmentMap[fragmentName];
            invariant(fragment, 9, fragmentName);
            return fragment || null;
        }
        default:
            return null;
    }
}
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