VMF is the format used by the Hammer editor to store maps before their compilation. Since VMF has a syntax similar to JSON, leops decided to write a VMF parser in JavaScript and I decided to write a VMF unparser to turn JSON back into VMF. I have some idea why.
The module exports a single vmfunparser(input) function. The input is a
JSON object source object.
const fs = require("fs");
const vmfunparser = require("vmfunparser");
// ...take output from vmfparser
let vmf_as_json = {};
// ...now open in Hammer
fs.writeFileSync("map.vmf", vmfunparser(vmf_as_json));