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Returning false aborts the entire traversal\n // immediately, causing equalBySelectionSet to return false.\n return selectionSet.selections.every((selection) => {\n // Avoid re-processing the same selection at the same level of recursion, in\n // case the same field gets included via multiple indirect fragment spreads.\n if (seenSelections.has(selection)) return true;\n seenSelections.add(selection);\n\n // Ignore @skip(if: true) and @include(if: false) fields.\n if (!shouldInclude(selection, context.variables)) return true;\n\n // If the field or (named) fragment spread has a @nonreactive directive on\n // it, we don't care if it's different, so we pretend it's the same.\n if (selectionHasNonreactiveDirective(selection)) return true;\n\n if (isField(selection)) {\n const resultKey = resultKeyNameFromField(selection);\n const aResultChild = aResult && aResult[resultKey];\n const bResultChild = bResult && bResult[resultKey];\n const childSelectionSet = selection.selectionSet;\n\n if (!childSelectionSet) {\n // These are scalar values, so we can compare them with deep equal\n // without redoing the main recursive work.\n return equal(aResultChild, bResultChild);\n }\n\n const aChildIsArray = Array.isArray(aResultChild);\n const bChildIsArray = Array.isArray(bResultChild);\n if (aChildIsArray !== bChildIsArray) return false;\n if (aChildIsArray && bChildIsArray) {\n const length = aResultChild.length;\n if (bResultChild.length !== length) {\n return false;\n }\n for (let i = 0; i < length; ++i) {\n if (\n !equalBySelectionSet(\n childSelectionSet,\n aResultChild[i],\n bResultChild[i],\n context\n )\n ) {\n return false;\n }\n }\n return true;\n }\n\n return equalBySelectionSet(\n childSelectionSet,\n aResultChild,\n bResultChild,\n context\n );\n } else {\n const fragment = getFragmentFromSelection(selection, context.fragmentMap);\n if (fragment) {\n // The fragment might === selection if it's an inline fragment, but\n // could be !== if it's a named fragment ...spread.\n if (selectionHasNonreactiveDirective(fragment)) return true;\n\n return equalBySelectionSet(\n fragment.selectionSet,\n // Notice that we reuse the same aResult and bResult values here,\n // since the fragment ...spread does not specify a field name, but\n // consists of multiple fields (within the fragment's selection set)\n // that should be applied to the current result value(s).\n aResult,\n bResult,\n context\n );\n }\n }\n });\n}\n\nfunction selectionHasNonreactiveDirective(\n selection:\n | FieldNode\n | InlineFragmentNode\n | FragmentSpreadNode\n | FragmentDefinitionNode\n): boolean {\n return (\n !!selection.directives && selection.directives.some(directiveIsNonreactive)\n );\n}\n\nfunction directiveIsNonreactive(dir: DirectiveNode): boolean {\n return dir.name.value === \"nonreactive\";\n}\n"]} |