bundlr.utils.estimateFolderPrice()
Estimates the cost in atomic units for uploading a given set of files.
Parameters
fileCount: Total number of files to uploadtotalBytes: Total number of bytes to uploadheaderSizeAvg: Average header size (optional)
ℹ️
The function becomes less accurate the smaller your transactions unless you provide it with an accurate
headerSizeAvg.
Returns
cost: The estimated cost in atomic units
const fileCount = files.length;
let totalBytes = 0;
for (const file of files) {
totalBytes += file.size;
}
// Create a dummy tx to help estimate header size
// If you're you're using multiple tags, add them all so they are accounted for when computing space
const tx = bundlr.createTransaction("Hello, world!", { tags: [{ name: "application", value: "Bundlr" }] });
const headerSizeAvg = tx.size - tx.data.length;
const price = await bundlr.utils.estimateFolderPrice({ fileCount, totalBytes, headerSizeAvg });
console.log(`Cost to upload ${fileCount} files containing ${totalBytes} bytes is ${bundlr.utils.fromAtomic(price)}`);