react-native.config.js

#!/usr/bin/env node
var pbxproj = require("@raydeck/xcode");
var fs = require("fs");
var path = require("path");
var glob = require("glob");
var cp = require("child_process");
function swiftify() {
  //Get my directory
  //Work with current dir
  var thisPath = process.cwd();
  //Look for dependency
  var iosPath = path.join(thisPath, "ios");
  if (!fs.existsSync(iosPath)) {
    console.log("Could not find ios in ", thisPath, iosPath);
    console.log(fs.readdirSync(thisPath));
    process.exit();
  }
  const globs = glob.sync(path.join(iosPath, "*.xcodeproj"));
  if (!globs || globs.length == 0) {
    console.log("Could not find xcodeproj directory");
    process.exit();
  }
  const xpdir = globs[0];
  if (xpdir.length === 0) {
    console.log("Could not find xcodeproj directory inside: ", iosPath);
    process.exit();
  }
  let filename = xpdir + "/project.pbxproj";
  let properties = {
    SWIFT_VERSION: "4.0"
  };
  if (!fs.existsSync(filename)) {
    console.log("Could not find pbxproj file:", filename);
    process.exit();
  }
  const placeholder = "RNPlaceholder.swift";
  const placeholderPath = iosPath + "/" + placeholder;
  if (!fs.existsSync(placeholderPath)) {
    console.log("Writing to ", placeholderPath);
    fs.writeFileSync(placeholderPath, "");
  }
  var proj = pbxproj.project(filename);
  proj.parseSync();
  proj.addSourceFileNew(placeholder);
  for (var key in properties) {
    proj.addBuildProperty(key, properties[key]);
  }
  const out = proj.writeSync();
  fs.writeFileSync(filename, out);

  const packagePath = path.join(thisPath, "package.json");
  if (fs.existsSync(packagePath)) {
    var package = require(packagePath);
    if (!package.isSwift) {
      package.isSwift = true;
      fs.writeFileSync(packagePath, JSON.stringify(package, null, 2));
      cp.spawnSync("react-native", ["fixpods"]);
    }
  }
}

module.exports = {
  commands: [
    {
      name: "swiftify",
      description: "Enable swift on the iOS app",
      func: swiftify
    }
  ]
};