Getting rid of BigNumberInput in favor of BigNumber

7 files changed, 17 insertions, 56 deletions

diff --git a/packages/instant/src/components/erc20_asset_amount_input.tsx b/packages/instant/src/components/erc20_asset_amount_input.tsx
index b1fec6405..a67d7d5db 100644
--- a/packages/instant/src/components/erc20_asset_amount_input.tsx
+++ b/packages/instant/src/components/erc20_asset_amount_input.tsx
@@ -1,10 +1,10 @@
+import { BigNumber } from '@0x/utils';
 import * as _ from 'lodash';
 import * as React from 'react';
 
 import { ColorOption, transparentWhite } from '../style/theme';
 import { ERC20Asset } from '../types';
 import { assetUtils } from '../util/asset';
-import { BigNumberInput } from '../util/big_number_input';
 import { util } from '../util/util';
 
 import { ScalingAmountInput } from './scaling_amount_input';
@@ -13,8 +13,8 @@ import { Container, Flex, Icon, Text } from './ui';
 // Asset amounts only apply to ERC20 assets
 export interface ERC20AssetAmountInputProps {
     asset?: ERC20Asset;
-    value?: BigNumberInput;
-    onChange: (value?: BigNumberInput, asset?: ERC20Asset) => void;
+    value?: BigNumber;
+    onChange: (value?: BigNumber, asset?: ERC20Asset) => void;
     onSelectAssetClick?: (asset?: ERC20Asset) => void;
     startingFontSizePx: number;
     fontColor?: ColorOption;
@@ -102,7 +102,7 @@ export class ERC20AssetAmountInput extends React.Component<ERC20AssetAmountInput
             </Container>
         );
     };
-    private readonly _handleChange = (value?: BigNumberInput): void => {
+    private readonly _handleChange = (value?: BigNumber): void => {
         this.props.onChange(value, this.props.asset);
     };
     private readonly _handleFontSizeChange = (fontSizePx: number): void => {
diff --git a/packages/instant/src/components/scaling_amount_input.tsx b/packages/instant/src/components/scaling_amount_input.tsx
index cfbf3b7cc..4b046e8da 100644
--- a/packages/instant/src/components/scaling_amount_input.tsx
+++ b/packages/instant/src/components/scaling_amount_input.tsx
@@ -1,8 +1,8 @@
+import { BigNumber } from '@0x/utils';
 import * as _ from 'lodash';
 import * as React from 'react';
 
 import { ColorOption } from '../style/theme';
-import { BigNumberInput } from '../util/big_number_input';
 import { util } from '../util/util';
 
 import { ScalingInput } from './scaling_input';
@@ -12,8 +12,8 @@ export interface ScalingAmountInputProps {
     maxFontSizePx: number;
     textLengthThreshold: number;
     fontColor?: ColorOption;
-    value?: BigNumberInput;
-    onChange: (value?: BigNumberInput) => void;
+    value?: BigNumber;
+    onChange: (value?: BigNumber) => void;
     onFontSizeChange: (fontSizePx: number) => void;
 }
 
@@ -32,7 +32,7 @@ export class ScalingAmountInput extends React.Component<ScalingAmountInputProps>
                 onFontSizeChange={onFontSizeChange}
                 fontColor={fontColor}
                 onChange={this._handleChange}
-                value={!_.isUndefined(value) ? value.toDisplayString() : ''}
+                value={!_.isUndefined(value) ? value.toString() : ''}
                 placeholder="0.00"
                 emptyInputWidthCh={3.5}
                 isDisabled={this.props.isDisabled}
@@ -44,7 +44,7 @@ export class ScalingAmountInput extends React.Component<ScalingAmountInputProps>
         let bigNumberValue;
         if (!_.isEmpty(value)) {
             try {
-                bigNumberValue = new BigNumberInput(value);
+                bigNumberValue = new BigNumber(value);
             } catch {
                 // We don't want to allow values that can't be a BigNumber, so don't even call onChange.
                 return;
diff --git a/packages/instant/src/components/zero_ex_instant_provider.tsx b/packages/instant/src/components/zero_ex_instant_provider.tsx
index 8c1025723..9391c03f7 100644
--- a/packages/instant/src/components/zero_ex_instant_provider.tsx
+++ b/packages/instant/src/components/zero_ex_instant_provider.tsx
@@ -1,5 +1,6 @@
 import { AssetBuyer } from '@0x/asset-buyer';
 import { ObjectMap, SignedOrder } from '@0x/types';
+import { BigNumber } from '@0x/utils';
 import * as _ from 'lodash';
 import * as React from 'react';
 import { Provider } from 'react-redux';
@@ -11,7 +12,6 @@ import { store, Store } from '../redux/store';
 import { fonts } from '../style/fonts';
 import { AssetMetaData, Network } from '../types';
 import { assetUtils } from '../util/asset';
-import { BigNumberInput } from '../util/big_number_input';
 import { errorFlasher } from '../util/error_flasher';
 import { gasPriceEstimator } from '../util/gas_price_estimator';
 import { getProvider } from '../util/provider';
@@ -64,7 +64,7 @@ export class ZeroExInstantProvider extends React.Component<ZeroExInstantProvider
             selectedAsset: assetUtils.createAssetFromAssetData(props.assetData, completeAssetMetaDataMap, networkId),
             selectedAssetAmount: _.isUndefined(props.defaultAssetBuyAmount)
                 ? state.selectedAssetAmount
-                : new BigNumberInput(props.defaultAssetBuyAmount),
+                : new BigNumber(props.defaultAssetBuyAmount),
             assetMetaDataMap: completeAssetMetaDataMap,
         };
         return storeStateFromProps;
diff --git a/packages/instant/src/containers/selected_erc20_asset_amount_input.ts b/packages/instant/src/containers/selected_erc20_asset_amount_input.ts
index 217d603d2..1a5609b12 100644
--- a/packages/instant/src/containers/selected_erc20_asset_amount_input.ts
+++ b/packages/instant/src/containers/selected_erc20_asset_amount_input.ts
@@ -13,7 +13,6 @@ import { State } from '../redux/reducer';
 import { ColorOption } from '../style/theme';
 import { ERC20Asset, OrderProcessState } from '../types';
 import { assetUtils } from '../util/asset';
-import { BigNumberInput } from '../util/big_number_input';
 import { errorFlasher } from '../util/error_flasher';
 
 export interface SelectedERC20AssetAmountInputProps {
@@ -24,19 +23,19 @@ export interface SelectedERC20AssetAmountInputProps {
 
 interface ConnectedState {
     assetBuyer?: AssetBuyer;
-    value?: BigNumberInput;
+    value?: BigNumber;
     asset?: ERC20Asset;
     isDisabled: boolean;
 }
 
 interface ConnectedDispatch {
-    updateBuyQuote: (assetBuyer?: AssetBuyer, value?: BigNumberInput, asset?: ERC20Asset) => void;
+    updateBuyQuote: (assetBuyer?: AssetBuyer, value?: BigNumber, asset?: ERC20Asset) => void;
 }
 
 interface ConnectedProps {
-    value?: BigNumberInput;
+    value?: BigNumber;
     asset?: ERC20Asset;
-    onChange: (value?: BigNumberInput, asset?: ERC20Asset) => void;
+    onChange: (value?: BigNumber, asset?: ERC20Asset) => void;
     isDisabled: boolean;
 }
 
diff --git a/packages/instant/src/redux/actions.ts b/packages/instant/src/redux/actions.ts
index bfae68e2b..a0781db19 100644
--- a/packages/instant/src/redux/actions.ts
+++ b/packages/instant/src/redux/actions.ts
@@ -2,8 +2,6 @@ import { BuyQuote } from '@0x/asset-buyer';
 import { BigNumber } from '@0x/utils';
 import * as _ from 'lodash';
 
-import { BigNumberInput } from '../util/big_number_input';
-
 import { ActionsUnion, OrderState } from '../types';
 
 export interface PlainAction<T extends string> {
@@ -38,8 +36,7 @@ export enum ActionTypes {
 
 export const actions = {
     updateEthUsdPrice: (price?: BigNumber) => createAction(ActionTypes.UPDATE_ETH_USD_PRICE, price),
-    updateSelectedAssetAmount: (amount?: BigNumberInput) =>
-        createAction(ActionTypes.UPDATE_SELECTED_ASSET_AMOUNT, amount),
+    updateSelectedAssetAmount: (amount?: BigNumber) => createAction(ActionTypes.UPDATE_SELECTED_ASSET_AMOUNT, amount),
     updateBuyOrderState: (orderState: OrderState) => createAction(ActionTypes.UPDATE_BUY_ORDER_STATE, orderState),
     updateLatestBuyQuote: (buyQuote?: BuyQuote) => createAction(ActionTypes.UPDATE_LATEST_BUY_QUOTE, buyQuote),
     updateSelectedAsset: (assetData?: string) => createAction(ActionTypes.UPDATE_SELECTED_ASSET, assetData),
diff --git a/packages/instant/src/redux/reducer.ts b/packages/instant/src/redux/reducer.ts
index dd9403052..20f682787 100644
--- a/packages/instant/src/redux/reducer.ts
+++ b/packages/instant/src/redux/reducer.ts
@@ -15,7 +15,6 @@ import {
     OrderState,
 } from '../types';
 import { assetUtils } from '../util/asset';
-import { BigNumberInput } from '../util/big_number_input';
 
 import { Action, ActionTypes } from './actions';
 
@@ -24,7 +23,7 @@ export interface State {
     assetBuyer?: AssetBuyer;
     assetMetaDataMap: ObjectMap<AssetMetaData>;
     selectedAsset?: Asset;
-    selectedAssetAmount?: BigNumberInput;
+    selectedAssetAmount?: BigNumber;
     buyOrderState: OrderState;
     ethUsdPrice?: BigNumber;
     latestBuyQuote?: BuyQuote;
diff --git a/packages/instant/src/util/big_number_input.ts b/packages/instant/src/util/big_number_input.ts
deleted file mode 100644
index 370d91a0a..000000000
--- a/packages/instant/src/util/big_number_input.ts
+++ /dev/null
@@ -1,34 +0,0 @@
-import { BigNumber } from '@0x/utils';
-import * as _ from 'lodash';
-
-/**
- *  A BigNumber extension that is more flexible about decimal strings.
- *  Such as allowing:
- *  new BigNumberInput('0.') => 0
- *  new BigNumberInput('1.') => 1
- *  new BigNumberInput('1..') => still throws
- */
-export class BigNumberInput extends BigNumber {
-    private readonly _isEndingWithDecimal: boolean;
-    constructor(numberOrString: string | number) {
-        if (_.isString(numberOrString)) {
-            const hasDecimalPeriod = _.endsWith(numberOrString, '.');
-            let internalString = numberOrString;
-            if (hasDecimalPeriod) {
-                internalString = numberOrString.slice(0, -1);
-            }
-            super(internalString);
-            this._isEndingWithDecimal = hasDecimalPeriod;
-        } else {
-            super(numberOrString);
-            this._isEndingWithDecimal = false;
-        }
-    }
-    public toDisplayString(): string {
-        const internalString = super.toString();
-        if (this._isEndingWithDecimal) {
-            return `${internalString}.`;
-        }
-        return internalString;
-    }
-}