fix eslint warning
fix eslint warning

th0r/vue,diermengdierme/vue,galenyuan/vue,th0r/vue,shupan123/vue-fixed-type,diermengdierme/vue,karevn/vue,lepture/vue,fergaldoyle/vue,fergaldoyle/vue,diermengdierme/vue,galenyuan/vue,galenyuan/vue,lepture/vue,karevn/vue,lepture/vue,seedalpha/vue,Endika/vue,Endika/vue,seedalpha/vue,shupan123/vue-fixed-type,fergaldoyle/vue,karevn/vue,Endika/vue,seedalpha/vue,th0r/vue,shupan123/vue-fixed-type