.preflight()
Query a current status of queues and fees
Example response
{
cost: {lamports: 576131, sol: 0.000576131},
cluster: 'devnet',
payer: '8XXXzYKeJ4N5HRAXtXYBKwU3FxGzJPWBDXSipSr41Gvx',
rpc: 'https://api.devnet.solana.com',
taxonomy: { create: [ [Object] ], update: [] }
}
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