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trezor-wallet/src/js/reducers/FiatRateReducer.js

37 lines
785 B

/* @flow */
'use strict';
export type Fiat = {
+network: string;
value: string;
}
export const initialState: Array<Fiat> = [];
const update = (state: Array<Fiat>, action: any): Array<Fiat> => {
const newState: Array<Fiat> = [ ...state ];
const exists: ?Fiat = newState.find(f => f.network === action.network);
if (exists) {
exists.value = action.rate.price_usd;
} else {
newState.push({
network: action.network,
value: action.rate.price_usd
})
}
return newState;
}
export default (state: Array<Fiat> = initialState, action: any): Array<Fiat> => {
switch (action.type) {
case 'rate__update' :
return update(state, action);
default:
return state;
}
}