poc.ts

import * as glob from 'glob';
import * as fs from 'fs';
import * as path from 'path';
import * as util from 'util';

const readFile = util.promisify(fs.readFile);
const EXP_RE = /(specs\.[-_A-Za-z0-9]+\.[-_A-Za-z0-9]+)/g;

export const searchProjectExperiment = () => {
  return new Promise((resolve, reject) => {
    glob('./**/*.?(ts|tsx)', {ignore: ['./node_modules/**/*']}, (err, files) => {
      if (err) {
        reject(err);
        return;
      }

      const promises: Promise<{file: string, matches: string[]}>[] = files.map(file => {
        return new Promise((res) => {
          async function analyzeContent() {
            try {
              const content = await readFile(path.join(file), {encoding: 'utf8'});
              const matches = content.match(EXP_RE);
              res({file, matches});
            } catch (e) {
              res({file, matches: []});
            }
          }

          analyzeContent();
        });
      });

      Promise.all(promises)
        .then(results => {
          const matches = results.map(result => result.matches);
          const result = matches.flat().filter(e => Boolean(e));
          resolve(new Set(result));
        });
    });
  });
}