arweave-stream-tx
Version:
[](https://www.npmjs.com/package/arweave-stream-tx) [](https://github.com/CDDelta/arweave-stream-tx/actions?query=workflo
32 lines (31 loc) • 1.72 kB
JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.createTransactionAsync = void 0;
const transaction_1 = __importDefault(require("arweave/node/lib/transaction"));
const utils_1 = require("arweave/node/lib/utils");
const promises_1 = require("stream/promises");
const generate_transaction_chunks_async_1 = require("./generate-transaction-chunks-async");
/**
* Creates an Arweave transaction from the piped data stream.
*/
function createTransactionAsync(attributes, arweave, jwk) {
return async (source) => {
var _a, _b, _c;
const chunks = await promises_1.pipeline(source, generate_transaction_chunks_async_1.generateTransactionChunksAsync());
const txAttrs = Object.assign({}, attributes);
(_a = txAttrs.owner) !== null && _a !== void 0 ? _a : (txAttrs.owner = jwk === null || jwk === void 0 ? void 0 : jwk.n);
(_b = txAttrs.last_tx) !== null && _b !== void 0 ? _b : (txAttrs.last_tx = await arweave.transactions.getTransactionAnchor());
const lastChunk = chunks.chunks[chunks.chunks.length - 1];
const dataByteLength = lastChunk.maxByteRange;
(_c = txAttrs.reward) !== null && _c !== void 0 ? _c : (txAttrs.reward = await arweave.transactions.getPrice(dataByteLength, txAttrs.target));
txAttrs.data_size = dataByteLength.toString();
const tx = new transaction_1.default(txAttrs);
tx.chunks = chunks;
tx.data_root = utils_1.bufferTob64Url(chunks.data_root);
return tx;
};
}
exports.createTransactionAsync = createTransactionAsync;