nativescript-environment-variables-hook/lib/after-prepare.js

Add env variables to your manifest and plist file.

const fs = require("fs-extra");
const handlebars = require("handlebars");
const appRoot = require("app-root-path");
const version = require(`${appRoot}/package.json`)?.version;

require("dotenv").config();

module.exports = function (
  $logger,
  $platformsDataService,
  $projectData,
  hookArgs
) {
  const platform = hookArgs.prepareData.platform;
  const platformData =
    $platformsDataService.platformsDataService[platform]._platformData;
  const nsConfig = $projectData.nsConfig;

  if (version) {
    process.env["APP_VERSION"] = version;
    const [ major, minor, patch ] = version.split('.').map((v) => parseInt(v))
    const build = ((major * 100000000) + (minor * 100000) + patch).toString()
    process.env["APP_VERSION_CODE"] = build;
  }

  if (nsConfig) {
    if (nsConfig.id) {
      process.env["APP_ID"] = nsConfig.id;
    }

    const hookConfig = $projectData.nsConfig.environmentVariablesHook;
    if (hookConfig && hookConfig.additionalPaths) {
      try {
        hookConfig.additionalPaths.forEach((path) => {
          editTemplateFile(path);
        });
      } catch (error) {
        console.warn(
          `[environment-environment-variable-hook] Could not update template ${path}`
        );
      }
    }
  }

  editTemplateFile(platformData.configurationFilePath);

  if (platform == "ios") {
    editTemplateFile(
      platformData.configurationFilePath.replace(
        `-${platformData.configurationFileName}`,
        ".entitlements"
      )
    );
  }
};

function editTemplateFile(path) {
  fs.readFile(path, (err, data) => {
    if (!err) {
      const source = data.toString();
      const result = renderToString(source, process.env);
      fs.writeFileSync(path, result);
    } else {
      console.warn(
        `[environment-environment-variable-hook] Could not update template ${path}`
      );
    }
  });
}

function renderToString(source, data) {
  var template = handlebars.compile(source);
  var outputString = template(data);
  return outputString;
}