diff options
Diffstat (limited to 'packages/instant/src/util')
-rw-r--r-- | packages/instant/src/util/asset.ts | 12 | ||||
-rw-r--r-- | packages/instant/src/util/big_number.ts | 29 | ||||
-rw-r--r-- | packages/instant/src/util/format.ts | 2 |
3 files changed, 41 insertions, 2 deletions
diff --git a/packages/instant/src/util/asset.ts b/packages/instant/src/util/asset.ts index 4e3b2b946..e42727d84 100644 --- a/packages/instant/src/util/asset.ts +++ b/packages/instant/src/util/asset.ts @@ -2,7 +2,7 @@ import { AssetProxyId, ObjectMap } from '@0x/types'; import * as _ from 'lodash'; import { assetDataNetworkMapping } from '../data/asset_data_network_mapping'; -import { Asset, AssetMetaData, Network, ZeroExInstantError } from '../types'; +import { Asset, AssetMetaData, ERC20Asset, Network, ZeroExInstantError } from '../types'; export const assetUtils = { createAssetFromAssetData: ( @@ -43,6 +43,16 @@ export const assetUtils = { return defaultName; } }, + formattedSymbolForAsset: (asset?: ERC20Asset, defaultName: string = '???'): string => { + if (_.isUndefined(asset)) { + return defaultName; + } + const symbol = asset.metaData.symbol; + if (symbol.length <= 5) { + return symbol; + } + return `${symbol.slice(0, 3)}...`; + }, getAssociatedAssetDataIfExists: (assetData: string, network: Network): string | undefined => { const assetDataGroupIfExists = _.find(assetDataNetworkMapping, value => value[network] === assetData); if (_.isUndefined(assetDataGroupIfExists)) { diff --git a/packages/instant/src/util/big_number.ts b/packages/instant/src/util/big_number.ts new file mode 100644 index 000000000..a34d22d76 --- /dev/null +++ b/packages/instant/src/util/big_number.ts @@ -0,0 +1,29 @@ +import { BigNumber } from '@0x/utils'; +import * as _ from 'lodash'; + +/** + * A BigNumber extension that is more flexible about decimal strings. + * Such as allowing: + * new BigNumberInput(0.) => 0 + * new BigNumberInput(1.) => 1 + * new BigNumberInput(1..) => still throws + */ +export class BigNumberInput extends BigNumber { + private readonly _hasDecimalPeriod: boolean; + constructor(bigNumberString: string) { + const hasDecimalPeriod = _.endsWith(bigNumberString, '.'); + let internalString = bigNumberString; + if (hasDecimalPeriod) { + internalString = bigNumberString.slice(0, bigNumberString.length - 1); + } + super(internalString); + this._hasDecimalPeriod = hasDecimalPeriod; + } + public toString(): string { + const internalString = super.toString(); + if (this._hasDecimalPeriod) { + return `${internalString}.`; + } + return internalString; + } +} diff --git a/packages/instant/src/util/format.ts b/packages/instant/src/util/format.ts index 8482b1526..ca7c01359 100644 --- a/packages/instant/src/util/format.ts +++ b/packages/instant/src/util/format.ts @@ -24,7 +24,7 @@ export const format = { if (_.isUndefined(ethUnitAmount)) { return defaultText; } - const roundedAmount = ethUnitAmount.round(decimalPlaces); + const roundedAmount = ethUnitAmount.round(decimalPlaces).toDigits(decimalPlaces); return `${roundedAmount} ETH`; }, ethBaseAmountInUsd: ( |