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Update ComplexityVisitor.js to fix RangeError, stack size exceeded error #306

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Update ComplexityVisitor.js to fix RangeError, stack size exceeded error #306

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25 changes: 20 additions & 5 deletions src/ComplexityVisitor.js
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Original file line number Diff line number Diff line change
Expand Up @@ -98,13 +98,28 @@ export default class ComplexityVisitor {
this.SelectionSet = this.flattenFragmentSpreads;
}

flattenFragmentSpreads(selectionSet) {
const nextSelections = selectionSet.selections.flatMap((node) => {
if (node.kind === 'FragmentSpread') {
const fragment = this.context.getFragment(node.name.value);
flattenFragmentSpreads(selectionSet, visitedFragments) {

// Ensure that visitedFragments is a Set or initialize a new Set if not provided
visitedFragments = visitedFragments instanceof Set ? visitedFragments : new Set();

var nextSelections = selectionSet.selections.flatMap((node) => {
if (node.kind === 'FragmentSpread') {
var fragmentName = node.name.value;

if (visitedFragments.has(fragmentName)) {
return [];
}

var fragment = this.context.getFragment(fragmentName);

if (!fragment) return [];
return this.flattenFragmentSpreads(fragment.selectionSet).selections;
var fragment = this.context.getFragment(node.name.value);

// Add the fragment to the set before the recursive call
visitedFragments.add(fragmentName);

return this.flattenFragmentSpreads(fragment.selectionSet, visitedFragments).selections;
}

return node;
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