JavaScript function to get all capture groups for a global regex.

getRegexCaptures.js

const getRegexCaptures = (regex, string) => {
  const getMatches = (cursor, results = []) => {
    const exp = regex.exec(string);
    if (!exp) {
      return results;
    }
    return getMatches(exp, [...results, exp[1]]);
  };
  return getMatches();
};

// Test case

const getRelativeImportPaths = fileContent => {
  const regex = /from '(.*?)'/g;
  return getRegexCaptures(regex, fileContent);
};

const testData = `
  import {Foo} from '../../Foo';
  import Bar from '../Bar';
`;
expect(getRelativeImportPaths(testData)).toEqual(['../../Foo', '../Bar']);