InsertCollction.getDependencies() can cause infinite function calls

[samchon]

As below code is configuring key and value pair of the dependencies after the recursive function call of itself, the infinite function calls could be occured if two tables are dependent on each other. Therefore, move the dependencies.set(target, output); statement from line 171 to 156. By bring the statement in front of the recursive function call, any infinite function call must not be occured.

safe-typeorm/src/transactions/InsertCollection.ts

Lines 146 to 176 in 0403e1f

	function getDependencies<T extends object>
	(target: Creator<T>, connection?: orm.Connection): Set<Creator<object>>
	{
	if (!connection)
	connection = findRepository(target).manager.connection;
	let output: Set<Creator<object>> | undefined = dependencies.get(target);
	if (output === undefined)
	{
	output = new Set();
	for (const meta of connection.entityMetadatas)
	{
	const child: Creator<object> = meta.target as Creator<object>;
	if (child === target)
	continue;
	for (const foreign of meta.foreignKeys)
	if (foreign.referencedEntityMetadata.target === target)
	{
	output.add(child);
	for (const grand of getDependencies(child, connection))
	output.add(grand);
	break;
	}
	}
	dependencies.set(target, output);
	}
	return output;
	}
	const dependencies: WeakMap<Creator<object>, Set<Creator<object>>> = new WeakMap();