@solana/spl-token
Version:
SPL Token Program JS API
89 lines • 3.54 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.mintToInstructionData = void 0;
exports.createMintToInstruction = createMintToInstruction;
exports.decodeMintToInstruction = decodeMintToInstruction;
exports.decodeMintToInstructionUnchecked = decodeMintToInstructionUnchecked;
const buffer_layout_1 = require("@solana/buffer-layout");
const buffer_layout_utils_1 = require("@solana/buffer-layout-utils");
const web3_js_1 = require("@solana/web3.js");
const constants_js_1 = require("../constants.js");
const errors_js_1 = require("../errors.js");
const internal_js_1 = require("./internal.js");
const types_js_1 = require("./types.js");
/** TODO: docs */
exports.mintToInstructionData = (0, buffer_layout_1.struct)([(0, buffer_layout_1.u8)('instruction'), (0, buffer_layout_utils_1.u64)('amount')]);
/**
* Construct a MintTo instruction
*
* @param mint Public key of the mint
* @param destination Address of the token account to mint to
* @param authority The mint authority
* @param amount Amount to mint
* @param multiSigners Signing accounts if `authority` is a multisig
* @param programId SPL Token program account
*
* @return Instruction to add to a transaction
*/
function createMintToInstruction(mint, destination, authority, amount, multiSigners = [], programId = constants_js_1.TOKEN_PROGRAM_ID) {
const keys = (0, internal_js_1.addSigners)([
{ pubkey: mint, isSigner: false, isWritable: true },
{ pubkey: destination, isSigner: false, isWritable: true },
], authority, multiSigners);
const data = Buffer.alloc(exports.mintToInstructionData.span);
exports.mintToInstructionData.encode({
instruction: types_js_1.TokenInstruction.MintTo,
amount: BigInt(amount),
}, data);
return new web3_js_1.TransactionInstruction({ keys, programId, data });
}
/**
* Decode a MintTo instruction and validate it
*
* @param instruction Transaction instruction to decode
* @param programId SPL Token program account
*
* @return Decoded, valid instruction
*/
function decodeMintToInstruction(instruction, programId = constants_js_1.TOKEN_PROGRAM_ID) {
if (!instruction.programId.equals(programId))
throw new errors_js_1.TokenInvalidInstructionProgramError();
if (instruction.data.length !== exports.mintToInstructionData.span)
throw new errors_js_1.TokenInvalidInstructionDataError();
const { keys: { mint, destination, authority, multiSigners }, data, } = decodeMintToInstructionUnchecked(instruction);
if (data.instruction !== types_js_1.TokenInstruction.MintTo)
throw new errors_js_1.TokenInvalidInstructionTypeError();
if (!mint || !destination || !authority)
throw new errors_js_1.TokenInvalidInstructionKeysError();
// TODO: key checks?
return {
programId,
keys: {
mint,
destination,
authority,
multiSigners,
},
data,
};
}
/**
* Decode a MintTo instruction without validating it
*
* @param instruction Transaction instruction to decode
*
* @return Decoded, non-validated instruction
*/
function decodeMintToInstructionUnchecked({ programId, keys: [mint, destination, authority, ...multiSigners], data, }) {
return {
programId,
keys: {
mint,
destination,
authority,
multiSigners,
},
data: exports.mintToInstructionData.decode(data),
};
}
//# sourceMappingURL=mintTo.js.map