Method delete

github-actions/browserstack/set-browserstack-env.js:12342–12350

* @see https://fetch.spec.whatwg.org/#concept-header-list-delete * @param {string} name * @param {boolean} isLowerCase

(name, isLowerCase)

          this[kHeadersSortedMap] = null;
          this.cookies = null;
        }
        /**
         * @see https://fetch.spec.whatwg.org/#concept-header-list-append
         * @param {string} name
         * @param {string} value
         * @param {boolean} isLowerCase
         */
        append(name, value, isLowerCase) {
          var _a;
          this[kHeadersSortedMap] = null;
          const lowercaseName = isLowerCase ? name : name.toLowerCase();
          const exists2 = this[kHeadersMap].get(lowercaseName);