transactionConfigMaskHasPriorityFee

function transactionConfigMaskHasPriorityFee(mask): boolean;

Checks whether the transaction config mask indicates a priority fee is present.

The priority fee uses bits 0 and 1 of the mask. Both bits must be set or both must be unset — having only one bit set is invalid and will throw an error.

Parameters

Returns

boolean

true if the mask indicates a priority fee is present, false otherwise.

Throws

Throws SOLANA_ERROR__TRANSACTION__INVALID_CONFIG_MASK_PRIORITY_FEE_BITS if only one of the two priority fee bits is set.

Example

Check if a mask has a priority fee.

const hasPriorityFee = transactionConfigMaskHasPriorityFee(0b11);
// true (both bits 0 and 1 are set)