Function matchKey

github-actions/browserstack/set-browserstack-env.js:10963–10969

(mockDispatch2, { path: path4, method, body, headers })

          return headers.get(key);
        } else {
          return lowerCaseEntries(headers)[key.toLocaleLowerCase()];
        }
      }
      function buildHeadersFromArray(headers) {
        const clone = headers.slice();
        const entries = [];
        for (let index = 0; index < clone.length; index += 2) {
          entries.push([clone[index], clone[index + 1]]);
        }
        return Object.fromEntries(entries);