postcss-bem-linter/lib/to-interpolated-regexp.js

A BEM linter for postcss

'use strict';

module.exports = source => {
  if (typeof source === 'string') {
    const splitSource = source.split('{componentName}');
    return componentName => {
      try {
        return new RegExp(
          splitSource.length > 1
            ? splitSource[0] + componentName + splitSource[1]
            : splitSource[0]
        );
      } catch (e) {
        throw new Error(
          `"${source}" does not produce a valid regular expression`
        );
      }
    };
  }
  return source;
};