gatsby-node.js

const fs = require('fs-extra');
const path = require('path');

const setIntro = require('./utils/setIntro');
const setContact = require('./utils/setContact');
const setEncryption = require('./utils/setEncryption');
const setAcknowledgements = require('./utils/setAcknowledgements');
const setPreferredLanguages = require('./utils/setPreferredLanguages');
const setCanonical = require('./utils/setCanonical');
const setPolicy = require('./utils/setPolicy');
const setHiring = require('./utils/setHiring');
const setExpires = require('./utils/setExpires');

const getPath = (htPath, program) =>
  path.join(program.directory, htPath, '.well-known/security.txt');
const contentReadFile = (pathToFile) => fs.readFileSync(pathToFile, 'utf8');

const getContent = (pathToFile, pluginOptions) => {
  let content = contentReadFile(pathToFile);
  content = setIntro(content, pluginOptions.intro);
  content = setContact(content, pluginOptions.contact);
  content = setEncryption(content, pluginOptions.encryption);
  content = setAcknowledgements(content, pluginOptions.acknowledgements);
  content = setPreferredLanguages(content, pluginOptions.languages);
  content = setCanonical(content, pluginOptions.canonical);
  content = setPolicy(content, pluginOptions.policy);
  content = setHiring(content, pluginOptions.hiring);
  content = setExpires(content, pluginOptions.expires);
  return content;
};

exports.onPostBuild = async ({ store }, pluginOptions) => {
  const { program } = store.getState();

  const htPath = getPath('public', program);
  const htContent = getContent(
    path.join(__dirname, 'utils/files/security.txt'),
    pluginOptions
  );

  // Return a promise chain
  try {
    await fs.ensureFile(htPath);
  } catch (e) {
    console.error(
      'onPostBuild error gatsby-plugin-security-txt',
      JSON.stringify(e)
    );
    return;
  }
  await fs.writeFile(htPath, htContent);

  return;
};