index.js

var topojson = require("topojson");
//var TDXApi = require("nqm-api-tdx");
var fs = require("fs");

function propertyTransform(feature) {
  return feature.properties;
}

function databot(input, output, context) {
  output.progress(0);
  const config = {
    commandHost: context.commandHost,
    queryHost: context.queryHost,
    accessToken: context.authToken
  };
  const api = context.tdxApi;
  api.getDatasetData(input.geojsonFileId, null, null, {limit:50000}, (err, response) => {
    if(err) {
      output.error("Failed to get data - %s", err.message);
      process.exit(1);
    }
    else {
      output.progress(50);
      var topology = topojson.topology({collection: response});
      topojson.simplify(topology, {quantization: 1e4, simplify: 1e-8, "property-transform": propertyTransform});
      fs.writeFile("test.json", JSON.stringify(topology), (err) => {
        if(err) {
          output.error("Failed to write file - %s", err.message);
          process.exit(1);
        } else {          
          output.progress(100);
          process.exit(0);
        }
      });
    }
  });
  
}

package.json

{
  "name": "nqm-geojson-simplifier-bot",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "repository": {
    "type": "git",
    "url": "git+https://github.com/IGlautier/nqm-geojson-simplifier-bot.git"
  },
  "author": "IGlautier",
  "license": "ISC",
  "bugs": {
    "url": "https://github.com/IGlautier/nqm-geojson-simplifier-bot/issues"
  },
  "homepage": "https://github.com/IGlautier/nqm-geojson-simplifier-bot#readme",
  "dependencies": {
    "nqm-api-tdx": "^0.1.4",
    "topojson": "^1.6.27"
  }
}