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fix: handle null values in Figma prototype file responses #291

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fix: handle null values in Figma prototype file responses #291

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ed96981
fix: handle null node responses in parseAPIResponse for prototype files
BillionClaw Mar 13, 2026
83a38c6
fix: handle null values in Figma prototype file responses
BillionClaw Mar 13, 2026
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15 changes: 11 additions & 4 deletions src/extractors/design-extractor.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -55,6 +55,8 @@ function parseAPIResponse(data: GetFileResponse | GetFileNodesResponse) {
// GetFileNodesResponse
const nodeResponses = Object.values(data.nodes);
nodeResponses.forEach((nodeResponse) => {
// Skip null responses (can occur for prototype files or inaccessible branches)
if (!nodeResponse) return;
if (nodeResponse.components) {
Object.assign(aggregatedComponents, nodeResponse.components);
}
Expand All @@ -65,15 +67,20 @@ function parseAPIResponse(data: GetFileResponse | GetFileNodesResponse) {
Object.assign(extraStyles, nodeResponse.styles);
}
});
nodesToParse = nodeResponses.map((n) => n.document).filter(isVisible);
nodesToParse = nodeResponses.map((n) => n?.document).filter((doc) => doc && isVisible(doc));
} else {
// GetFileResponse
Object.assign(aggregatedComponents, data.components);
Object.assign(aggregatedComponentSets, data.componentSets);
if (data.components) {
Object.assign(aggregatedComponents, data.components);
}
if (data.componentSets) {
Object.assign(aggregatedComponentSets, data.componentSets);
}
if (data.styles) {
extraStyles = data.styles;
}
nodesToParse = data.document.children.filter(isVisible);
// Handle null document or children in prototype file responses
nodesToParse = data.document?.children?.filter(isVisible) ?? [];
}

const { name } = data;
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