TypeScript code

TypeScript is the default language of the Code box. Type annotations are stripped at compile time, then the code runs in the QuickJS engine.

The API

Symbol	Role
input	The value received on the input port
vars	A read-only snapshot of the run variables
__vars	A read / write view: get, set, has, delete, clear, keys, toObject
console.log / .info / .warn / .error	Writes to the execution log
fetch(...)	An HTTP call, routed by the firewall
return	The value returned leaves on the result port

The body is wrapped in an async function: return and await work at the top level.

Example

interface Commande {
  id: number;
  montant: number;
  statut: 'payee' | 'attente' | 'annulee';
}

const commandes = input as Commande[];

const payees = commandes.filter((c) => c.statut === 'payee');
const total = payees.reduce((s, c) => s + c.montant, 0);

console.log(`${payees.length} commandes payées, total ${total} €`);

__vars.set('totalPaye', total);

return { nombre: payees.length, total };

Built-in library

Available as a global variable and through require(), with nothing to declare in packages:

Global	Package
_, lodash	lodash
moment	moment
uuid	uuid
nanoid	nanoid
CryptoJS	crypto-js
Ajv	ajv
ajvFormats	ajv-formats
chai, expect, assert	chai
cheerio	cheerio
xml2js	xml2js

const signature = CryptoJS.HmacSHA256(input.corps, vars.secret).toString();
return { signature };

A require() on a module that is not available raises an explicit error.

Awaiting and calling

const reponse = await fetch(`${vars.baseUrl}/sante`);
const corps = await reponse.json();
if (corps.statut !== 'ok') throw new Error(`état ${corps.statut}`);
return corps;

The call goes through the firewall like any other traffic, and it is interrupted when the run is stopped or when the timeout is exceeded.

External packages

Declare them in packages (npm); they are bundled once then mounted offline.

Postman and Bruno compatibility

The same environment exposes the pm.* and bru.* layers — see JavaScript code.