Best answer

Return a File object

  • 25 July 2023
  • 1 reply

Userlevel 1

I’m trying to return a file that can be used by other actions.

This code converts the base-64 string that’s returned by an API into a File:

const xml = require('pixl-xml');

const perform = async (z, bundle) => {

const xml = 'XML HERE'
var body = xml.stringify( 'Document', xml );

const options = {
url: 'https://www.domain.tld/get_file',
method: 'POST',
headers: {
'Content-Type': 'application/xml',
body: body

return z.request(options).then((response) => {

response.throwForStatus(); = xml.parse(response.content);

if ( ) {

const buffer = Buffer.from(`;
const file = new File(buffer,'somefile.pdf', { type: 'application/octet-stream' });

return {
file: file



Unit and integration tests work as expected, but I get an error when I try to use this in a Zap:

File is not defined What happened (You are seeing this because you are an admin): Starting POST request to https://www.domain.tld/get_file Received 200 code from https://www.domain.tld/get_file after 941ms Received content "[REDACTED]" File is not defined Console logs: Stack trace: ReferenceError: File is not defined at Object.<anonymous> (/var/task/creates/get_report.js:44:20) at bound (node:domain:433:15) at Object.runBound (node:domain:444:12) at Object.tryCatcher (/var/task/node_modules/bluebird/js/release/util.js:16:23) at Promise._settlePromiseFromHandler (/var/task/node_modules/bluebird/js/release/promise.js:547:31) at Promise._settlePromise (/var/task/node_modules/bluebird/js/release/promise.js:604:18) at Promise._settlePromise0 (/var/task/node_modules/bluebird/js/release/promise.js:649:10) at Promise._settlePromises (/var/task/node_modules/bluebird/js/release/promise.js:729:18) at _drainQueueStep (/var/task/node_modules/bluebird/js/release/async.js:93:12) at _drainQueue (/var/task/node_modules/bluebird/js/release/async.js:86:9) at Async._drainQueues (/var/task/node_modules/bluebird/js/release/async.js:102:5) at Immediate.Async.drainQueues [as _onImmediate] (/var/task/node_modules/bluebird/js/release/async.js:15:14) at processImmediate (node:internal/timers:466:21) at process.topLevelDomainCallback (node:domain:161:15) at process.callbackTrampoline (node:internal/async_hooks:128:24)


Is the File object not valid when the integration is pushed to the server?

Is there another way to do this?


Best answer by craibuc 27 July 2023, 18:23

View original

This post has been closed for comments. Please create a new post if you need help or have a question about this topic.

1 reply

Userlevel 1

Found a solution:

const response = await z.request(options); = xml.parse(response.content);

const base64EncodedFile =;
const decodedFile = Buffer.from(base64EncodedFile, 'base64');
const filename = `${}.pdf`;
const contentType = 'application/pdf'

const url = await z.stashFile(decodedFile, decodedFile.length, filename, contentType);

return {
url: url,
filetype: contentType,
filename: filename

At some point, I’ll refactor this to be a dehydrator.