updateOrAppendSetComputeUnitPriceInstruction

function updateOrAppendSetComputeUnitPriceInstruction<TTransactionMessage>(microLamports, transactionMessage): TTransactionMessage;

Updates the first SetComputeUnitPrice instruction in a transaction message with the given micro-Lamports, or appends a new instruction if none exists. A function of the current value can be provided instead of a static value.

Example

const updatedTransactionMessage = updateOrAppendSetComputeUnitPriceInstruction(
  // E.g. double the current price or set it to 10_000 if it isn't set.
  (currentPrice) => currentPrice === null ? 10_000 : currentPrice * 2,
  transactionMessage,
);

Type Parameters

Type Parameter
`TTransactionMessage` extends `Readonly`<{ `instructions`: readonly `IInstruction`<`string`, readonly (`IAccountLookupMeta`<`string`, `string`> \| `IAccountMeta`<`string`>)[]>[]; `version`: `TransactionVersion`; }>

Parameters

Parameter	Type	Description
`microLamports`	`MicroLamports` \| (`previousMicroLamports`) => `MicroLamports`	The new compute unit price, or a function that takes the previous price and returns the new one.
`transactionMessage`	`TTransactionMessage`	The transaction message to update.

Returns

TTransactionMessage

updateOrAppendSetComputeUnitPriceInstruction

Example

Type Parameters

Parameters

Returns

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