Update helpers.ts

[iskandarreza]

The current matchesCriteria method for criteria.text does not seem very effective.

  if (criteria.text) {
    const texts = Array.isArray(criteria.text) ? criteria.text : [criteria.text];
    if (!texts.includes(document.text)) {
      return false;
    }
  }

This means if criteria.text (or elements in an array passed in as it's value) is not an exact match to document.text, we'll get no results.

Unless that is by design, I propose the following minor change.