code: function mergeAll(concurrent) {
      if (concurrent === void 0) {
          concurrent = Number.POSITIVE_INFINITY;
      }
      return Object(_mergeMap__WEBPACK_IMPORTED_MODULE_0__["mergeMap"])(_util_identity__WEBPACK_IMPORTED_MODULE_1__["identity"], concurrent);
  }
docs: PURE_IMPORTS_START _mergeMap,_util_identity PURE_IMPORTS_END