Function groupByFile

src/ui-server/api/file.ts:250–286

Fold edges into one row per file at the far end, ordered by symbol count.

(
  edges: readonly Edge[],
  endpoint: (edge: Edge) => string,
  nodes: Map<string, Node>
)

/** Fold edges into one row per file at the far end, ordered by symbol count. */
function groupByFile(
  edges: readonly Edge[],
  endpoint: (edge: Edge) => string,
  nodes: Map<string, Node>
): WireImportRow[] {
  const byFile = new Map<string, Map<string, Node>>();
  for (const edge of edges) {
    const node = nodes.get(endpoint(edge));
    if (!node) continue;
    const file = toPosixPath(node.filePath);
    let bucket = byFile.get(file);
    if (!bucket) {
      bucket = new Map<string, Node>();
      byFile.set(file, bucket);
    }
    bucket.set(node.id, node);
  }

  return [...byFile.entries()]
    .map(([file, symbols]) => {
      const ordered = [...symbols.values()].sort(
        (a, b) => a.startLine - b.startLine || a.name.localeCompare(b.name)
      );
      return {
        file,
        test: isTestFile(file),
        symbols: ordered.slice(0, MAX_SYMBOLS_PER_IMPORT).map((n) => ({
          id: n.id,
          name: n.name,
          kind: n.kind,
          line: n.startLine,
        })),
        symbolCount: ordered.length,
      };
    })
    .sort((a, b) => b.symbolCount - a.symbolCount || a.file.localeCompare(b.file));
}

function unresolvedImportsOf(
  cg: CodeGraph,