regexper-static/src/js/parser/javascript/repeat_spec.js

export default {
  setup() {
    if (this.properties.min) {
      this.minimum = Number(this.properties.min.textValue);
    } else if (this.properties.exact) {
      this.minimum = Number(this.properties.exact.textValue);
    } else {
      this.minimum = 0;
    }

    if (this.properties.max) {
      this.maximum = Number(this.properties.max.textValue);
    } else if (this.properties.exact) {
      this.maximum = Number(this.properties.exact.textValue);
    } else {
      this.maximum = -1;
    }
  }
};