score:3
you are calling the function instead of passing its reference
export default connect(mapstatetoprops,mapdispatchtoprops())(cart);
// ------------------------------------------------------^^--------
change to this
export default connect(mapstatetoprops, mapdispatchtoprops)(cart);
an alternative is to just not use mapdispatchtoprops
at all and use the dispatch your connected component receives
export default connect(mapstatetoprops)(cart);
and then using dispatch
this.props.dispatch(decrementcount())
Source: stackoverflow.com
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