Start Position management, bug fix on add amounts (#40)

* very rough positions/pools data fetching and position list rendering * fix formatting * fix loading * position page routing, bug on add page Co-authored-by: ianlapham <ianlapham@gmail.com>
2021-04-16 15:33:26 -04:00 · 2021-04-16 15:33:26 -04:00 · 9f5584c37d
commit 9f5584c37d
parent 0c0305a53d
21 changed files with 1117 additions and 728 deletions
--- a/.storybook/main.ts
+++ b/.storybook/main.ts
@ -10,7 +10,7 @@ module.exports = {
    reactDocgen: 'react-docgen-typescript',
    reactDocgenTypescriptOptions: {
      shouldExtractLiteralValuesFromEnum: true,
-      propFilter: prop => (prop.parent ? !/node_modules/.test(prop.parent.fileName) : true)
-    }
-  }
+      propFilter: (prop) => (prop.parent ? !/node_modules/.test(prop.parent.fileName) : true),
+    },
+  },
 }
--- a/.storybook/theme.ts
+++ b/.storybook/theme.ts
@ -4,11 +4,11 @@ import { create } from '@storybook/theming'
 const uniswapBaseTheme = {
  brandTitle: 'Uniswap Design',
  brandUrl: 'https://uniswap.org',
-  brandImage: 'https://ipfs.io/ipfs/QmNa8mQkrNKp1WEEeGjFezDmDeodkWRevGFN8JCV7b4Xir'
+  brandImage: 'https://ipfs.io/ipfs/QmNa8mQkrNKp1WEEeGjFezDmDeodkWRevGFN8JCV7b4Xir',
 }
 export const light = create({
  base: 'light',
-  ...uniswapBaseTheme
+  ...uniswapBaseTheme,
 })

 // export const dark = create({
--- a/src/constants/multicall/abi.json
+++ b/src/constants/multicall/abi.json
--- a/src/components/Card/index.tsx
+++ b/src/components/Card/index.tsx
@ -28,6 +28,10 @@ export const DarkGreyCard = styled(Card)`
  background-color: ${({ theme }) => theme.bg2};
 `

+export const DarkCard = styled(Card)`
+  background-color: ${({ theme }) => theme.bg0};
+`
+
 export const OutlineCard = styled(Card)`
  border: 1px solid ${({ theme }) => theme.bg3};
 `
--- a/src/components/PositionList/PositionList.stories.tsx
+++ b/src/components/PositionList/PositionList.stories.tsx
@ -1,51 +1,53 @@
-import { Story } from '@storybook/react/types-6-0'
-import React from 'react'
-import { basisPointsToPercent } from 'utils'
-import { DAI, WBTC } from '../../constants'
-import Component, { PositionListProps } from './index'
-import { TokenAmount } from '@uniswap/sdk-core'
-import JSBI from 'jsbi'
+// import { Story } from '@storybook/react/types-6-0'
+// import React from 'react'
+// import { Position } from 'types/position'
+// import { basisPointsToPercent } from 'utils'
+// import { DAI, WBTC } from '../../constants'
+// import Component, { PositionListProps } from './index'
+// import { TokenAmount } from '@uniswap/sdk-core'
+// import JSBI from 'jsbi'

-const FEE_BIPS = {
-  FIVE: basisPointsToPercent(5),
-  THIRTY: basisPointsToPercent(30),
-  ONE_HUNDRED: basisPointsToPercent(100),
-}
-const daiAmount = new TokenAmount(DAI, JSBI.BigInt(500 * 10 ** 18))
-const wbtcAmount = new TokenAmount(WBTC, JSBI.BigInt(10 ** 7))
-const positions = [
-  {
-    feesEarned: {
-      DAI: 1000,
-      WBTC: 0.005,
-    },
-    feeLevel: FEE_BIPS.FIVE,
-    tokenAmount0: daiAmount,
-    tokenAmount1: wbtcAmount,
-    tickLower: 40000,
-    tickUpper: 60000,
-  },
-  {
-    feesEarned: {
-      DAI: 1000,
-      WBTC: 0.005,
-    },
-    feeLevel: FEE_BIPS.THIRTY,
-    tokenAmount0: daiAmount,
-    tokenAmount1: wbtcAmount,
-    tickLower: 45000,
-    tickUpper: 55000,
-  },
-]
+// const FEE_BIPS = {
+//   FIVE: basisPointsToPercent(5),
+//   THIRTY: basisPointsToPercent(30),
+//   ONE_HUNDRED: basisPointsToPercent(100),
+// }
+// const daiAmount = new TokenAmount(DAI, JSBI.BigInt(500 * 10 ** 18))
+// const wbtcAmount = new TokenAmount(WBTC, JSBI.BigInt(10 ** 7))
+// const positions = [
+//   {
+//     feesEarned: {
+//       DAI: 1000,
+//       WBTC: 0.005,
+//     },
+//     feeLevel: FEE_BIPS.FIVE,
+//     tokenAmount0: daiAmount,
+//     tokenAmount1: wbtcAmount,
+//     tickLower: 40000,
+//     tickUpper: 60000,
+//   },
+//   {
+//     feesEarned: {
+//       DAI: 1000,
+//       WBTC: 0.005,
+//     },
+//     feeLevel: FEE_BIPS.THIRTY,
+//     tokenAmount0: daiAmount,
+//     tokenAmount1: wbtcAmount,
+//     tickLower: 45000,
+//     tickUpper: 55000,
+//   },
+// ]
+// const positions: Position[] = []

 export default {
  title: 'PositionList',
 }

-const Template: Story<PositionListProps> = (args) => <Component {...args} />
+// const Template: Story<PositionListProps> = (args) => <Component {...args} />

-export const PositionList = Template.bind({})
-PositionList.args = {
-  positions,
-  showUnwrapped: true,
-}
+// export const PositionList = Template.bind({})
+// PositionList.args = {
+//   positions,
+//   showUnwrapped: true,
+// }
--- a/src/components/PositionList/index.tsx
+++ b/src/components/PositionList/index.tsx
@ -1,63 +1,10 @@
-import Badge, { BadgeVariant } from 'components/Badge'
-import DoubleCurrencyLogo from 'components/DoubleLogo'
+import PositionListItem from 'components/PositionListItem'
 import React from 'react'
-import { AlertTriangle } from 'react-feather'
 import { useTranslation } from 'react-i18next'
-import { unwrappedToken } from 'utils/wrappedCurrency'
-import styled, { keyframes } from 'styled-components'
-import { Link } from 'react-router-dom'
+import styled from 'styled-components'
 import { MEDIA_WIDTHS } from 'theme'
-import { Position } from 'types/position'
+import { PositionDetails } from 'types/position'

-const ActiveDot = styled.span`
-  background-color: ${({ theme }) => theme.success};
-  border-radius: 50%;
-  height: 8px;
-  width: 8px;
-  margin-right: 4px;
-`
-const Row = styled(Link)`
-  align-items: center;
-  border-radius: 20px;
-  display: flex;
-  flex-direction: column;
-  color: ${({ theme }) => theme.text1};
-  margin: 8px 0;
-  padding: 8px;
-  text-decoration: none;
-  font-weight: 500;
-  &:first-of-type {
-    margin: 0 0 8px 0;
-  }
-  &:last-of-type {
-    margin: 8px 0 0 0;
-  }
-
-  & > div:not(:first-child) {
-    text-align: right;
-    min-width: 18%;
-  }
-  @media screen and (min-width: ${MEDIA_WIDTHS.upToSmall}px) {
-    flex-direction: row;
-  }
-  :hover {
-    background-color: ${({ theme }) => theme.bg1};
-  }
-`
-const BadgeText = styled.div`
-  font-weight: 500;
-  font-size: 14px;
-`
-const BadgeWrapper = styled.div`
-  font-size: 14px;
-`
-const DataLineItem = styled.div`
-  text-align: right;
-  font-size: 14px;
-`
-const DoubleArrow = styled.span`
-  color: ${({ theme }) => theme.text3};
-`
 const DesktopHeader = styled.div`
  display: none;
  font-size: 14px;
@ -78,81 +25,7 @@ const DesktopHeader = styled.div`
    }
  }
 `
-const loadingAnimation = keyframes`
-  0% {
-    background-position: 100% 50%;
-  }
-  100% {
-    background-position: 0% 50%;
-  }
-`

-const LoadingRows = styled.div`
-  display: grid;
-  grid-column-gap: 0.5em;
-  grid-row-gap: 0.8em;
-  grid-template-columns: repeat(3, 1fr);
-  & > div {
-    animation: ${loadingAnimation} 1.5s infinite;
-    animation-fill-mode: both;
-    background: linear-gradient(
-      to left,
-      ${({ theme }) => theme.bg3} 25%,
-      ${({ theme }) => theme.bg5} 50%,
-      ${({ theme }) => theme.bg3} 75%
-    );
-    background-size: 400%;
-    border-radius: 0.2em;
-    height: 1.4em;
-    will-change: background-position;
-  }
-  & > div:nth-child(4n + 1) {
-    grid-column: 1 / 3;
-  }
-  & > div:nth-child(4n) {
-    grid-column: 3 / 4;
-    margin-bottom: 2em;
-  }
-`
-const RangeData = styled.div`
-  display: flex;
-  flex-direction: column;
-  width: 100%;
-  & > div {
-    align-items: center;
-    display: flex;
-    justify-content: space-between;
-    width: 100%;
-  }
-  @media screen and (min-width: ${MEDIA_WIDTHS.upToSmall}px) {
-    display: block;
-    & > div {
-      display: block;
-    }
-  }
-`
-const AmountData = styled.div`
-  display: none;
-  @media screen and (min-width: ${MEDIA_WIDTHS.upToSmall}px) {
-    display: block;
-  }
-`
-const FeeData = styled.div`
-  display: none;
-  @media screen and (min-width: ${MEDIA_WIDTHS.upToSmall}px) {
-    display: block;
-  }
-`
-const LabelData = styled.div`
-  align-items: center;
-  display: flex;
-  flex: 1 1 auto;
-  justify-content: space-between;
-  width: 100%;
-  @media screen and (min-width: ${MEDIA_WIDTHS.upToSmall}px) {
-    display: block;
-  }
-`
 const MobileHeader = styled.div`
  font-weight: medium;
  font-size: 16px;
@ -161,28 +34,14 @@ const MobileHeader = styled.div`
    display: none;
  }
 `
-const PrimaryPositionIdData = styled.div`
-  display: flex;
-  flex-direction: row;
-  align-items: center;
-  padding: 6px 0 12px 0;
-  > * {
-    margin-right: 8px;
-  }
-`
-
-const DataText = styled.div`
-  font-weight: 500;
-`

 export type PositionListProps = React.PropsWithChildren<{
-  loading: boolean
-  positions: Position[]
-  showUnwrapped?: boolean
+  positions: PositionDetails[]
 }>

-export default function PositionList({ loading, positions, showUnwrapped }: PositionListProps) {
+export default function PositionList({ positions }: PositionListProps) {
  const { t } = useTranslation()
+
  return (
    <>
      <DesktopHeader>
@ -192,90 +51,10 @@ export default function PositionList({ loading, positions, showUnwrapped }: Posi
        <div>{t('Fees Earned')}</div>
      </DesktopHeader>
      <MobileHeader>Your positions</MobileHeader>
-      {loading ? (
-        <LoadingRows>
-          <div />
-          <div />
-          <div />
-          <div />
-          <div />
-          <div />
-          <div />
-          <div />
-          <div />
-          <div />
-          <div />
-          <div />
-        </LoadingRows>
-      ) : (
-        positions.map((position) => {
-          const { feeLevel, feesEarned, tokenAmount0, tokenAmount1 } = position
-          const symbol0 = tokenAmount0.token.symbol || ''
-          const symbol1 = tokenAmount1.token.symbol || ''
-          const currency0 = showUnwrapped ? tokenAmount0.token : unwrappedToken(tokenAmount0.token)
-          const currency1 = showUnwrapped ? tokenAmount1.token : unwrappedToken(tokenAmount1.token)
-          const limitCrossed = tokenAmount0.equalTo(0) || tokenAmount1.equalTo(0)
-
-          const key = `${feeLevel.toFixed()}-${symbol0}-${tokenAmount0.toFixed(2)}-${symbol1}-${tokenAmount1.toFixed(
-            2
-          )}`
-
-          return (
-            <Row key={key} to="/asdf">
-              <LabelData>
-                <PrimaryPositionIdData>
-                  <DoubleCurrencyLogo currency0={currency0} currency1={currency1} size={16} margin />
-                  <DataText>
-                    &nbsp;{symbol0}&nbsp;/&nbsp;{symbol1}
-                  </DataText>
-                  &nbsp;
-                  <Badge>
-                    <BadgeText>{feeLevel.toSignificant(2)}%</BadgeText>
-                  </Badge>
-                </PrimaryPositionIdData>
-                <BadgeWrapper>
-                  {limitCrossed ? (
-                    <Badge variant={BadgeVariant.WARNING}>
-                      <AlertTriangle width={14} height={14} style={{ marginRight: '4px' }} />
-                      &nbsp;
-                      <BadgeText>{t('Out of range')}</BadgeText>
-                    </Badge>
-                  ) : (
-                    <Badge variant={BadgeVariant.DEFAULT}>
-                      <ActiveDot /> &nbsp;
-                      <BadgeText>{t('Active')}</BadgeText>
-                    </Badge>
-                  )}
-                </BadgeWrapper>
-              </LabelData>
-              <RangeData>
-                <DataLineItem>
-                  1,672 <DoubleArrow>↔</DoubleArrow> 1,688 {symbol0}&nbsp;/&nbsp;{symbol1}
-                </DataLineItem>
-                <DataLineItem>
-                  0.0002 <DoubleArrow>↔</DoubleArrow> 0.0001 {symbol1}&nbsp;/&nbsp;{symbol0}
-                </DataLineItem>
-              </RangeData>
-              <AmountData>
-                <DataLineItem>
-                  {tokenAmount0.toSignificant()}&nbsp;{symbol0}
-                </DataLineItem>
-                <DataLineItem>
-                  {tokenAmount1.toSignificant()}&nbsp;{symbol1}
-                </DataLineItem>
-              </AmountData>
-              <FeeData>
-                <DataLineItem>
-                  {feesEarned[symbol0]}&nbsp;{symbol0}
-                </DataLineItem>
-                <DataLineItem>
-                  {feesEarned[symbol1]}&nbsp;{symbol1}
-                </DataLineItem>
-              </FeeData>
-            </Row>
-          )
-        })
-      )}
+      {positions.map((p, i) => {
+        const key = `${i}-${p.nonce.toString()} ${p.token0} ${p.token1} ${p.tokensOwed0} ${p.tokensOwed1}`
+        return <PositionListItem key={key} positionDetails={p} positionIndex={i} />
+      })}
    </>
  )
 }
--- a/src/components/PositionListItem/PositionListItem.stories.tsx
+++ b/src/components/PositionListItem/PositionListItem.stories.tsx
@ -0,0 +1,31 @@
+// import { Story } from '@storybook/react/types-6-0'
+// import { FeeAmount, MAX_TICK, MIN_TICK, TICK_SPACINGS } from '@uniswap/v3-sdk'
+// import { BigNumber } from 'ethers'
+// import React from 'react'
+// import { Position } from 'types/position'
+// import Component, { PositionListItemProps } from './index'
+
+// const position: Position  = {
+// nonce: BigNumber.from(0),
+// operator: '',
+// token0: '',
+// token1: '',
+// fee: FeeAmount.LOW,
+// tickLower: MIN_TICK(TICK_SPACINGS[FeeAmount.LOW]),
+// tickUpper: MAX_TICK(TICK_SPACINGS[FeeAmount.LOW]),
+// liquidity,
+// feeGrowthInside0LastX128fee
+// feeGrowthInside0LastX128
+// feeGrowthInside1LastX128
+// tokensOwed0
+// tokensOwed1
+// }
+
+export default {
+  title: 'PositionListItem',
+}
+
+// const Template: Story<PositionListItemProps> = (args) => <Component {...args} />
+
+// export const PositionListItem = Template.bind({})
+// PositionListItem.args = {position}
--- a/src/components/PositionListItem/index.tsx
+++ b/src/components/PositionListItem/index.tsx
@ -0,0 +1,244 @@
+import React, { useMemo } from 'react'
+import { Position } from '@uniswap/v3-sdk'
+import Badge, { BadgeVariant } from 'components/Badge'
+import DoubleCurrencyLogo from 'components/DoubleLogo'
+import { PoolState, usePool } from 'data/Pools'
+import { useToken } from 'hooks/Tokens'
+import { AlertTriangle } from 'react-feather'
+import { useTranslation } from 'react-i18next'
+import { Link } from 'react-router-dom'
+import styled from 'styled-components'
+import { MEDIA_WIDTHS } from 'theme'
+import { PositionDetails } from 'types/position'
+import { basisPointsToPercent } from 'utils'
+import { TokenAmount } from '@uniswap/sdk-core'
+import { formatPrice, formatTokenAmount } from 'utils/formatTokenAmount'
+import Loader from 'components/Loader'
+import { unwrappedToken } from 'utils/wrappedCurrency'
+
+const ActiveDot = styled.span`
+  background-color: ${({ theme }) => theme.success};
+  border-radius: 50%;
+  height: 8px;
+  width: 8px;
+  margin-right: 4px;
+`
+const Row = styled(Link)`
+  align-items: center;
+  border-radius: 20px;
+  display: flex;
+  flex-direction: column;
+  color: ${({ theme }) => theme.text1};
+  margin: 8px 0;
+  padding: 8px;
+  text-decoration: none;
+  font-weight: 500;
+  &:first-of-type {
+    margin: 0 0 8px 0;
+  }
+  &:last-of-type {
+    margin: 8px 0 0 0;
+  }
+
+  & > div:not(:first-child) {
+    text-align: right;
+    min-width: 18%;
+  }
+  @media screen and (min-width: ${MEDIA_WIDTHS.upToSmall}px) {
+    flex-direction: row;
+  }
+  :hover {
+    background-color: ${({ theme }) => theme.bg1};
+  }
+`
+const BadgeText = styled.div`
+  font-weight: 500;
+  font-size: 14px;
+`
+const BadgeWrapper = styled.div`
+  font-size: 14px;
+`
+const DataLineItem = styled.div`
+  text-align: right;
+  font-size: 14px;
+`
+const DoubleArrow = styled.span`
+  color: ${({ theme }) => theme.text3};
+`
+const RangeData = styled.div`
+  display: flex;
+  flex-direction: column;
+  width: 100%;
+  & > div {
+    align-items: center;
+    display: flex;
+    justify-content: space-between;
+    width: 100%;
+  }
+  @media screen and (min-width: ${MEDIA_WIDTHS.upToSmall}px) {
+    display: block;
+    & > div {
+      display: block;
+    }
+  }
+`
+const AmountData = styled.div`
+  display: none;
+  @media screen and (min-width: ${MEDIA_WIDTHS.upToSmall}px) {
+    display: block;
+  }
+`
+const FeeData = styled.div`
+  display: none;
+  @media screen and (min-width: ${MEDIA_WIDTHS.upToSmall}px) {
+    display: block;
+  }
+`
+const LabelData = styled.div`
+  align-items: center;
+  display: flex;
+  flex: 1 1 auto;
+  justify-content: space-between;
+  width: 100%;
+  @media screen and (min-width: ${MEDIA_WIDTHS.upToSmall}px) {
+    display: block;
+  }
+`
+const PrimaryPositionIdData = styled.div`
+  display: flex;
+  flex-direction: row;
+  align-items: center;
+  padding: 6px 0 12px 0;
+  > * {
+    margin-right: 8px;
+  }
+`
+
+const DataText = styled.div`
+  font-weight: 500;
+`
+
+export interface PositionListItemProps {
+  positionDetails: PositionDetails
+  positionIndex: number
+}
+
+export default function PositionListItem({ positionDetails, positionIndex }: PositionListItemProps) {
+  const { t } = useTranslation()
+
+  const {
+    token0: token0Address,
+    token1: token1Address,
+    fee: feeAmount,
+    liquidity,
+    tickLower,
+    tickUpper,
+    feeGrowthInside0LastX128,
+    feeGrowthInside1LastX128,
+  } = positionDetails
+
+  const token0 = useToken(token0Address)
+  const token1 = useToken(token1Address)
+
+  const currency0 = token0 ? unwrappedToken(token0) : undefined
+  const currency1 = token1 ? unwrappedToken(token1) : undefined
+
+  // construct Position from details returned
+  const [poolState, pool] = usePool(currency0 ?? undefined, currency1 ?? undefined, feeAmount)
+  const position = useMemo(() => {
+    if (pool) {
+      return new Position({ pool, liquidity, tickLower, tickUpper })
+    }
+    return undefined
+  }, [liquidity, pool, tickLower, tickUpper])
+
+  const poolLoading = poolState === PoolState.LOADING
+
+  // liquidity amounts in tokens
+  const amount0: TokenAmount | undefined = position?.amount0
+  const amount1: TokenAmount | undefined = position?.amount1
+  const formattedAmount0 = formatTokenAmount(amount0, 4)
+  const formattedAmount1 = formatTokenAmount(amount1, 4)
+
+  // prices
+  const price0Lower = position ? position.token0PriceLower : undefined
+  const price0Upper = position ? position.token0PriceUpper : undefined
+  const price1Lower = price0Upper ? price0Upper.invert() : undefined
+  const price1Upper = price0Lower ? price0Lower.invert() : undefined
+
+  // check if price is within range
+  const outOfRange: boolean = pool ? pool.tickCurrent < tickLower || pool.tickCurrent > tickUpper : false
+
+  const positionSummaryLink = '/pool/' + positionIndex.toString()
+
+  return (
+    <Row to={positionSummaryLink}>
+      <LabelData>
+        <PrimaryPositionIdData>
+          <DoubleCurrencyLogo currency0={currency0 ?? undefined} currency1={currency1 ?? undefined} size={16} margin />
+          <DataText>
+            &nbsp;{currency0?.symbol}&nbsp;/&nbsp;{currency1?.symbol}
+          </DataText>
+          &nbsp;
+          <Badge>
+            <BadgeText>{basisPointsToPercent(feeAmount / 100).toSignificant()}%</BadgeText>
+          </Badge>
+        </PrimaryPositionIdData>
+        <BadgeWrapper>
+          {outOfRange ? (
+            <Badge variant={BadgeVariant.WARNING}>
+              <AlertTriangle width={14} height={14} style={{ marginRight: '4px' }} />
+              &nbsp;
+              <BadgeText>{t('Out of range')}</BadgeText>
+            </Badge>
+          ) : (
+            <Badge variant={BadgeVariant.DEFAULT}>
+              <ActiveDot /> &nbsp;
+              <BadgeText>{t('Active')}</BadgeText>
+            </Badge>
+          )}
+        </BadgeWrapper>
+      </LabelData>
+      <RangeData>
+        {price0Lower && price1Lower && price0Upper && price1Upper ? (
+          <>
+            <DataLineItem>
+              {formatPrice(price0Lower, 4)} <DoubleArrow>↔</DoubleArrow> {formatPrice(price0Upper, 4)}{' '}
+              {currency0?.symbol}&nbsp;/&nbsp;
+              {currency1?.symbol}
+            </DataLineItem>
+            <DataLineItem>
+              {formatPrice(price1Lower, 4)} <DoubleArrow>↔</DoubleArrow> {formatPrice(price1Upper, 4)}{' '}
+              {currency1?.symbol}&nbsp;/&nbsp;
+              {currency0?.symbol}
+            </DataLineItem>
+          </>
+        ) : (
+          <Loader />
+        )}
+      </RangeData>
+      <AmountData>
+        {!poolLoading ? (
+          <>
+            <DataLineItem>
+              {formattedAmount0}&nbsp;{currency0?.symbol}
+            </DataLineItem>
+            <DataLineItem>
+              {formattedAmount1}&nbsp;{currency1?.symbol}
+            </DataLineItem>
+          </>
+        ) : (
+          <Loader />
+        )}
+      </AmountData>
+      <FeeData>
+        <DataLineItem>
+          {feeGrowthInside0LastX128.toString()}&nbsp;{currency0?.symbol}
+        </DataLineItem>
+        <DataLineItem>
+          {feeGrowthInside1LastX128.toString()}&nbsp;{currency1?.symbol}
+        </DataLineItem>
+      </FeeData>
+    </Row>
+  )
+}
--- a/src/constants/index.ts
+++ b/src/constants/index.ts
@ -1,7 +1,6 @@
 import { ChainId, Percent, Token, WETH9 } from '@uniswap/sdk-core'
 import { AbstractConnector } from '@web3-react/abstract-connector'
 import JSBI from 'jsbi'
-
 import { fortmatic, injected, portis, walletconnect, walletlink } from '../connectors'

 export const MULTICALL_ADDRESSES: { [chainId in ChainId]: string } = {
--- a/src/hooks/useContract.ts
+++ b/src/hooks/useContract.ts
@ -1,4 +1,3 @@
-import { UniswapV3Pool } from './../types/v3/UniswapV3Pool.d'
 import { Contract } from '@ethersproject/contracts'
 import { abi as GOVERNANCE_ABI } from '@uniswap/governance/build/GovernorAlpha.json'
 import { abi as UNI_ABI } from '@uniswap/governance/build/Uni.json'
@ -6,10 +5,9 @@ import { abi as STAKING_REWARDS_ABI } from '@uniswap/liquidity-staker/build/Stak
 import { abi as MERKLE_DISTRIBUTOR_ABI } from '@uniswap/merkle-distributor/build/MerkleDistributor.json'
 import { ChainId, WETH9 } from '@uniswap/sdk-core'
 import { abi as IUniswapV2PairABI } from '@uniswap/v2-core/build/IUniswapV2Pair.json'
-import { abi as NFTPositionManagerABI } from '@uniswap/v3-periphery/artifacts/contracts/NonfungiblePositionManager.sol/NonfungiblePositionManager.json'
 import { abi as V3FactoryABI } from '@uniswap/v3-core/artifacts/contracts/UniswapV3Factory.sol/UniswapV3Factory.json'
-import { abi as TickLensABI } from '@uniswap/v3-periphery/artifacts/contracts/lens/TickLens.sol/TickLens.json'
 import { abi as V3PoolABI } from '@uniswap/v3-core/artifacts/contracts/UniswapV3Pool.sol/UniswapV3Pool.json'
+import { abi as TickLensABI } from '@uniswap/v3-periphery/artifacts/contracts/lens/TickLens.sol/TickLens.json'

 import ARGENT_WALLET_DETECTOR_ABI from 'abis/argent-wallet-detector.json'
 import ENS_PUBLIC_RESOLVER_ABI from 'abis/ens-public-resolver.json'
@ -17,6 +15,7 @@ import ENS_ABI from 'abis/ens-registrar.json'
 import ERC20_ABI from 'abis/erc20.json'
 import ERC20_BYTES32_ABI from 'abis/erc20_bytes32.json'
 import MIGRATOR_ABI from 'abis/migrator.json'
+import MULTICALL_ABI from 'abis/multicall2.json'
 import { Unisocks } from 'abis/types/Unisocks'
 import UNISOCKS_ABI from 'abis/unisocks.json'
 import WETH_ABI from 'abis/weth.json'
@ -28,11 +27,11 @@ import {
  UNI,
  MULTICALL_ADDRESSES,
 } from 'constants/index'
-import MULTICALL_ABI from 'abis/multicall2.json'
+import { abi as NFTPositionManagerABI } from '@uniswap/v3-periphery/artifacts/contracts/NonfungiblePositionManager.sol/NonfungiblePositionManager.json'
 import { V1_EXCHANGE_ABI, V1_FACTORY_ABI, V1_FACTORY_ADDRESSES } from 'constants/v1'
-import { NONFUNGIBLE_POSITION_MANAGER_ADDRESSES, FACTORY_ADDRESSES, TICK_LENS_ADDRESSES } from 'constants/v3'
+import { FACTORY_ADDRESSES, NONFUNGIBLE_POSITION_MANAGER_ADDRESSES, TICK_LENS_ADDRESSES } from 'constants/v3'
 import { useMemo } from 'react'
-import { TickLens, UniswapV3Factory } from 'types/v3'
+import { TickLens, UniswapV3Factory, UniswapV3Pool } from 'types/v3'
 import { NonfungiblePositionManager } from 'types/v3/NonfungiblePositionManager'
 import { getContract } from 'utils'
 import { useActiveWeb3React } from './index'
--- a/src/hooks/useV3PositionManager.ts
+++ b/src/hooks/useV3PositionManager.ts
@ -1,63 +0,0 @@
-import { OptionalMethodInputs, useSingleCallResult, useSingleContractMultipleData } from 'state/multicall/hooks'
-import { Position } from 'types/position'
-import { useV3NFTPositionManagerContract } from './useContract'
-
-interface UseV3PositionsResults {
-  error?: (string | boolean) | (string | boolean)[]
-  loading: boolean
-  positions: Position[]
-}
-export function useV3Positions(account: string | null | undefined): UseV3PositionsResults {
-  const positionManager = useV3NFTPositionManagerContract()
-  let loading = false
-  let error: any
-  const {
-    error: balanceOfError,
-    loading: balanceOfLoading,
-    result: balanceOfResult,
-  } = useSingleCallResult(positionManager, 'balanceOf', [account || undefined])
-
-  loading = balanceOfLoading
-  error = balanceOfError
-
-  const tokenOfOwnerByIndexArgs: OptionalMethodInputs[] = balanceOfResult
-    ? balanceOfResult.filter((x) => Boolean(x)).map((index) => [account, index])
-    : []
-  const tokensCallResults = useSingleContractMultipleData(
-    positionManager,
-    'tokenOfOwnerByIndex',
-    tokenOfOwnerByIndexArgs
-  )
-
-  const callData: any[] = []
-  tokensCallResults.forEach(({ error: e, loading: l, result: data }) => {
-    if (e && !error) {
-      error = e
-    }
-    loading = loading || l
-    if (data) {
-      callData.push([account, data])
-    }
-  })
-
-  const positionsCallResults = useSingleContractMultipleData(positionManager, 'positions', callData)
-
-  const positions: any[] = []
-  positionsCallResults.forEach(({ error: e, loading: l, result: data }) => {
-    if (e) {
-      if (!error) {
-        error = e
-      }
-      if (error && Array.isArray(error)) {
-        error = [...error, error]
-      }
-    }
-    loading = loading || l
-
-    if (data) {
-      positions.push(data)
-    }
-  })
-
-  return { error, loading, positions }
-}
--- a/src/hooks/useV3Positions.ts
+++ b/src/hooks/useV3Positions.ts
@ -0,0 +1,95 @@
+import { useSingleCallResult, useSingleContractMultipleData } from 'state/multicall/hooks'
+import { useMemo } from 'react'
+import { PositionDetails } from 'types/position'
+import { useV3NFTPositionManagerContract } from './useContract'
+import JSBI from 'jsbi'
+
+interface UseV3PositionsResults {
+  error?: (string | boolean) | (string | boolean)[]
+  loading: boolean
+  positions: PositionDetails[] | undefined
+}
+export function useV3Positions(account: string | null | undefined): UseV3PositionsResults {
+  const positionManager = useV3NFTPositionManagerContract()
+
+  const { loading: balanceLoading, error: balanceError, result: balanceResult } = useSingleCallResult(
+    positionManager ?? undefined,
+    'balanceOf',
+    [account ?? undefined]
+  )
+
+  const accountBalance: number | undefined = balanceResult
+    ? parseFloat(JSBI.BigInt(balanceResult[0]).toString())
+    : undefined
+
+  const positionIndicesArgs = useMemo(() => {
+    if (accountBalance && account) {
+      const tokenRequests = []
+      for (let i = 0; i < accountBalance; i++) {
+        tokenRequests.push([account, i])
+      }
+      return tokenRequests
+    }
+    return []
+  }, [account, accountBalance])
+
+  const positionIndicesResults = useSingleContractMultipleData(
+    positionManager ?? undefined,
+    'tokenOfOwnerByIndex',
+    positionIndicesArgs
+  )
+  const positionIndicesLoading = useMemo(() => positionIndicesResults.some(({ loading }) => loading), [
+    positionIndicesResults,
+  ])
+  const positionIndicesError = useMemo(() => positionIndicesResults.some(({ error }) => error), [
+    positionIndicesResults,
+  ])
+
+  const formattedIndicesArgs = useMemo(() => {
+    if (positionIndicesResults && account) {
+      return positionIndicesResults.map((call) => {
+        return [call.result?.[0] ? parseFloat(JSBI.BigInt(call.result?.[0]).toString()) : undefined]
+      })
+    }
+    return []
+  }, [account, positionIndicesResults])
+
+  const positionsResults = useSingleContractMultipleData(
+    positionManager ?? undefined,
+    'positions',
+    formattedIndicesArgs
+  )
+  const positionResultsLoading = useMemo(() => positionsResults.some(({ loading }) => loading), [positionsResults])
+  const positionResultsError = useMemo(() => positionsResults.some(({ error }) => error), [positionsResults])
+
+  const loading = balanceLoading || positionResultsLoading || positionIndicesLoading
+
+  const positions = useMemo(() => {
+    if (positionsResults && !loading) {
+      return positionsResults.map((entry) => {
+        const rp = entry.result
+        return {
+          fee: rp?.fee,
+          feeGrowthInside0LastX128: rp?.feeGrowthInside0LastX128,
+          feeGrowthInside1LastX128: rp?.feeGrowthInside1LastX128,
+          liquidity: rp?.liquidity,
+          nonce: rp?.nonce,
+          operator: rp?.operator,
+          tickLower: rp?.tickLower,
+          tickUpper: rp?.tickUpper,
+          token0: rp?.token0,
+          token1: rp?.token1,
+          tokensOwed0: rp?.tokensOwed0,
+          tokensOwed1: rp?.tokensOwed1,
+        }
+      })
+    }
+    return undefined
+  }, [positionsResults, loading])
+
+  return {
+    error: balanceError || positionIndicesError || positionResultsError,
+    loading,
+    positions,
+  }
+}
--- a/src/pages/App.tsx
+++ b/src/pages/App.tsx
@ -32,6 +32,7 @@ import VotePage from './Vote/VotePage'
 import { RedirectDuplicateTokenIdsV2 } from './AddLiquidityV2/redirects'
 import AddLiquidity from './AddLiquidity'
 import AddLiquidityV2 from './AddLiquidityV2'
+import { PositionPage } from './Pool/PositionPage'

 const AppWrapper = styled.div`
  display: flex;
@ -106,11 +107,11 @@ export default function App() {
              <Route exact strict path="/find" component={PoolFinder} />
              <Route exact strict path="/pool/v2" component={PoolV2} />
              <Route exact strict path="/pool" component={Pool} />
+              <Route exact strict path="/pool/:positionIndex" component={PositionPage} />

              <Route exact path="/add" component={AddLiquidity} />
              <Route exact path="/add/v2/" component={AddLiquidityV2} />
              <Route exact path="/add/v2/:currencyIdA" component={AddLiquidityV2} />
-
              <Route exact path="/add/:currencyIdA" component={AddLiquidity} />
              <Route exact strict path="/add/v2/:currencyIdA?/:currencyIdB?" component={RedirectDuplicateTokenIdsV2} />
              <Route
--- a/src/pages/Pool/PositionPage.tsx
+++ b/src/pages/Pool/PositionPage.tsx
@ -0,0 +1,212 @@
+import React, { useMemo } from 'react'
+import { Position } from '@uniswap/v3-sdk'
+import { PoolState, usePool } from 'data/Pools'
+import { useActiveWeb3React } from 'hooks'
+import { useToken } from 'hooks/Tokens'
+import { useV3Positions } from 'hooks/useV3Positions'
+import { RouteComponentProps } from 'react-router-dom'
+import { unwrappedToken } from 'utils/wrappedCurrency'
+import { LoadingRows } from './styleds'
+import styled from 'styled-components'
+import { AutoColumn } from 'components/Column'
+import { RowBetween, RowFixed } from 'components/Row'
+import DoubleCurrencyLogo from 'components/DoubleLogo'
+import { TYPE } from 'theme'
+import Badge, { BadgeVariant } from 'components/Badge'
+import { basisPointsToPercent } from 'utils'
+import { ButtonPrimary } from 'components/Button'
+import { DarkCard } from 'components/Card'
+import CurrencyLogo from 'components/CurrencyLogo'
+import { AlertTriangle } from 'react-feather'
+import { useTranslation } from 'react-i18next'
+
+const PageWrapper = styled.div`
+  min-width: 800px;
+`
+
+const BadgeWrapper = styled.div`
+  font-size: 14px;
+`
+
+const BadgeText = styled.div`
+  font-weight: 500;
+  font-size: 14px;
+`
+const ResponsiveGrid = styled.div`
+  width: 100%;
+  display: grid;
+  grid-gap: 1em;
+
+  grid-template-columns: 1.5fr repeat(4, 1fr);
+
+  @media screen and (max-width: 900px) {
+    grid-template-columns: 1.5fr repeat(4, 1fr);
+    & :nth-child(4) {
+      display: none;
+    }
+  }
+
+  @media screen and (max-width: 700px) {
+    grid-template-columns: 20px 1.5fr repeat(3, 1fr);
+    & :nth-child(4) {
+      display: none;
+    }
+    & :nth-child(5) {
+      display: none;
+    }
+  }
+`
+
+// responsive text
+const Label = styled(TYPE.label)<{ end?: boolean }>`
+  display: flex;
+  font-size: 16px;
+  justify-content: ${({ end }) => (end ? 'flex-end' : 'flex-start')};
+  align-items: center;
+`
+
+const ActiveDot = styled.span`
+  background-color: ${({ theme }) => theme.success};
+  border-radius: 50%;
+  height: 8px;
+  width: 8px;
+  margin-right: 4px;
+`
+
+export function PositionPage({
+  match: {
+    params: { positionIndex },
+  },
+}: RouteComponentProps<{ positionIndex?: string }>) {
+  const { account } = useActiveWeb3React()
+  const { t } = useTranslation()
+
+  const { loading, positions } = useV3Positions(account ?? undefined)
+
+  const positionDetails = positionIndex && positions ? positions[parseInt(positionIndex)] : undefined
+
+  const {
+    token0: token0Address,
+    token1: token1Address,
+    fee: feeAmount,
+    liquidity,
+    tickLower,
+    tickUpper,
+    // feeGrowthInside0LastX128,
+    // feeGrowthInside1LastX128,
+  } = positionDetails || {}
+
+  const token0 = useToken(token0Address)
+  const token1 = useToken(token1Address)
+
+  const currency0 = token0 ? unwrappedToken(token0) : undefined
+  const currency1 = token1 ? unwrappedToken(token1) : undefined
+
+  // construct Position from details returned
+  const [poolState, pool] = usePool(currency0 ?? undefined, currency1 ?? undefined, feeAmount)
+  const position = useMemo(() => {
+    if (pool && tickLower && tickUpper) {
+      return new Position({ pool, liquidity, tickLower, tickUpper })
+    }
+    return undefined
+  }, [liquidity, pool, tickLower, tickUpper])
+
+  // const price0Lower = position ? position.token0PriceLower : undefined
+  // const price0Upper = position ? position.token0PriceUpper : undefined
+  // const price1Lower = price0Upper ? price0Upper.invert() : undefined
+  // const price1Upper = price0Lower ? price0Lower.invert() : undefined
+
+  // check if price is within range
+  const outOfRange: boolean =
+    pool && tickLower && tickUpper ? pool.tickCurrent < tickLower || pool.tickCurrent > tickUpper : false
+
+  return loading || poolState === PoolState.LOADING || !feeAmount ? (
+    <LoadingRows>
+      <div />
+      <div />
+      <div />
+      <div />
+      <div />
+      <div />
+      <div />
+      <div />
+      <div />
+      <div />
+      <div />
+      <div />
+    </LoadingRows>
+  ) : (
+    <PageWrapper>
+      <AutoColumn gap="lg">
+        <AutoColumn gap="sm">
+          <RowBetween>
+            <RowFixed>
+              <DoubleCurrencyLogo currency0={currency0} currency1={currency1} size={20} margin={true} />
+              <TYPE.label fontSize={'20px'} mr="10px">
+                &nbsp;{currency0?.symbol}&nbsp;/&nbsp;{currency1?.symbol}
+              </TYPE.label>
+              <Badge>
+                <BadgeText>{basisPointsToPercent(feeAmount / 100).toSignificant()}%</BadgeText>
+              </Badge>
+            </RowFixed>
+            <ButtonPrimary width="200px" padding="8px" borderRadius="12px">
+              Remove liquidity
+            </ButtonPrimary>
+          </RowBetween>
+          <RowBetween>
+            <BadgeWrapper>
+              {outOfRange ? (
+                <Badge variant={BadgeVariant.WARNING}>
+                  <AlertTriangle width={14} height={14} style={{ marginRight: '4px' }} />
+                  &nbsp;
+                  <BadgeText>{t('Out of range')}</BadgeText>
+                </Badge>
+              ) : (
+                <Badge variant={BadgeVariant.DEFAULT}>
+                  <ActiveDot /> &nbsp;
+                  <BadgeText>{t('Active')}</BadgeText>
+                </Badge>
+              )}
+            </BadgeWrapper>
+          </RowBetween>
+        </AutoColumn>
+        <DarkCard>
+          <AutoColumn gap="lg">
+            <ResponsiveGrid>
+              <Label>Tokens</Label>
+              <Label end={true}>Entry</Label>
+              <Label end={true}>Current</Label>
+              <Label end={true}>Fees</Label>
+              <Label end={true}>USD Value</Label>
+            </ResponsiveGrid>
+            <ResponsiveGrid>
+              <RowFixed>
+                <CurrencyLogo currency={currency0} />
+                <TYPE.label ml="10px">{currency0?.symbol}</TYPE.label>
+              </RowFixed>
+              <Label end={true}>{position?.amount0.toSignificant(4)}</Label>
+              <Label end={true}>{position?.amount0.toSignificant(4)}</Label>
+              <Label end={true}>1</Label>
+              <Label end={true}>$100</Label>
+            </ResponsiveGrid>
+            <ResponsiveGrid>
+              <RowFixed>
+                <CurrencyLogo currency={currency1} />
+                <TYPE.label ml="10px">{currency1?.symbol}</TYPE.label>
+              </RowFixed>
+              <Label end={true}>{position?.amount1.toSignificant(4)}</Label>
+              <Label end={true}>{position?.amount1.toSignificant(4)}</Label>
+              <Label end={true}>1</Label>
+              <Label end={true}>$100</Label>
+            </ResponsiveGrid>
+          </AutoColumn>
+        </DarkCard>
+        <DarkCard>
+          <AutoColumn gap="lg">
+            <TYPE.label>Position Limits</TYPE.label>
+          </AutoColumn>
+        </DarkCard>
+      </AutoColumn>
+    </PageWrapper>
+  )
+}
--- a/src/pages/Pool/index.tsx
+++ b/src/pages/Pool/index.tsx
@ -1,3 +1,4 @@
+import React, { useContext, useMemo } from 'react'
 import Badge, { BadgeVariant } from 'components/Badge'
 import { ButtonGray, ButtonPrimary } from 'components/Button'
 import { AutoColumn } from 'components/Column'
@ -6,14 +7,15 @@ import { SwapPoolTabs } from 'components/NavigationTabs'
 import PositionList from 'components/PositionList'
 import { RowBetween, RowFixed } from 'components/Row'
 import { useActiveWeb3React } from 'hooks'
-import { useV3Positions } from 'hooks/useV3PositionManager'
-import React, { useContext, useMemo } from 'react'
+import { useV3Positions } from 'hooks/useV3Positions'
 import { BookOpen, ChevronDown, Download, Inbox, Info, PlusCircle } from 'react-feather'
 import { useTranslation } from 'react-i18next'
-import styled, { ThemeContext } from 'styled-components'
 import { Link } from 'react-router-dom'
 import { useWalletModalToggle } from 'state/application/hooks'
+import styled, { ThemeContext } from 'styled-components'
 import { HideSmall, MEDIA_WIDTHS, TYPE } from 'theme'
+import { PositionDetails } from 'types/position'
+import { LoadingRows } from './styleds'

 const PageWrapper = styled(AutoColumn)`
  max-width: 870px;
@ -91,24 +93,27 @@ const MainContentWrapper = styled.main`
 `
 export default function Pool() {
  const { account } = useActiveWeb3React()
-  const { error, loading, positions } = useV3Positions(account)
  const toggleWalletModal = useWalletModalToggle()
  const { t } = useTranslation()
  const theme = useContext(ThemeContext)

+  const { error, positions } = useV3Positions(account)
+
  if (error) {
    console.error('error fetching v3 positions', error)
  }

-  const hasPositions = Boolean(positions?.length > 0)
+  const hasPositions = useMemo(() => Boolean(positions && positions.length > 0), [positions])

  const numInactivePositions = useMemo(() => {
-    return positions.reduce((acc: any, position: any) => {
-      const { tokenAmount0, tokenAmount1 } = position
-      const limitCrossed = tokenAmount0.equalTo(BigInt(0)) || tokenAmount1.equalTo(BigInt(0))
-      return limitCrossed ? acc + 1 : acc
-    }, 0)
-  }, [positions])
+    return hasPositions && positions
+      ? positions.reduce((acc: any, position: PositionDetails) => {
+          const { tokensOwed0, tokensOwed1 } = position
+          const limitCrossed = tokensOwed0.eq(0) || tokensOwed1.eq(0)
+          return limitCrossed ? acc + 1 : acc
+        }, 0)
+      : 0
+  }, [positions, hasPositions])

  const hasV2Liquidity = true
  const showMigrateHeaderLink = Boolean(hasV2Liquidity && hasPositions)
@ -182,9 +187,9 @@ export default function Pool() {
            </TitleRow>

            <MainContentWrapper>
-              {hasPositions ? (
-                <PositionList loading={loading} positions={positions} />
-              ) : (
+              {hasPositions && positions ? (
+                <PositionList positions={positions} />
+              ) : positions && !hasPositions ? (
                <NoLiquidity>
                  <TYPE.largeHeader color={theme.text3} textAlign="center">
                    <Inbox />
@ -208,6 +213,21 @@ export default function Pool() {
                    )
                  )}
                </NoLiquidity>
+              ) : (
+                <LoadingRows>
+                  <div />
+                  <div />
+                  <div />
+                  <div />
+                  <div />
+                  <div />
+                  <div />
+                  <div />
+                  <div />
+                  <div />
+                  <div />
+                  <div />
+                </LoadingRows>
              )}
            </MainContentWrapper>
          </AutoColumn>
--- a/src/pages/Pool/styleds.tsx
+++ b/src/pages/Pool/styleds.tsx
@ -1,5 +1,5 @@
 import { Text } from 'rebass'
-import styled from 'styled-components'
+import styled, { keyframes } from 'styled-components'

 export const Wrapper = styled.div`
  position: relative;
@ -55,3 +55,40 @@ export const Dots = styled.span`
    }
  }
 `
+
+const loadingAnimation = keyframes`
+  0% {
+    background-position: 100% 50%;
+  }
+  100% {
+    background-position: 0% 50%;
+  }
+`
+
+export const LoadingRows = styled.div`
+  display: grid;
+  grid-column-gap: 0.5em;
+  grid-row-gap: 0.8em;
+  grid-template-columns: repeat(3, 1fr);
+  & > div {
+    animation: ${loadingAnimation} 1.5s infinite;
+    animation-fill-mode: both;
+    background: linear-gradient(
+      to left,
+      ${({ theme }) => theme.bg1} 25%,
+      ${({ theme }) => theme.bg2} 50%,
+      ${({ theme }) => theme.bg1} 75%
+    );
+    background-size: 400%;
+    border-radius: 12px;
+    height: 2.4em;
+    will-change: background-position;
+  }
+  & > div:nth-child(4n + 1) {
+    grid-column: 1 / 3;
+  }
+  & > div:nth-child(4n) {
+    grid-column: 3 / 4;
+    margin-bottom: 2em;
+  }
+`
--- a/src/state/mint/hooks.ts
+++ b/src/state/mint/hooks.ts
@ -145,7 +145,7 @@ export function useDerivedMintInfo(
  const price = useMemo(() => {
    // if no liquidity use typed value
    if (noLiquidity) {
-      const parsedAmount = tryParseAmount(startPriceTypedValue, tokenA)
+      const parsedAmount = tryParseAmount(startPriceTypedValue, tokenB)
      if (parsedAmount && tokenA && tokenB) {
        const amountOne = tryParseAmount('1', tokenA)
        return amountOne ? new Price(tokenA, tokenB, amountOne.raw, parsedAmount.raw) : undefined
--- a/src/state/multicall/hooks.ts
+++ b/src/state/multicall/hooks.ts
@ -108,7 +108,7 @@ function useCallsData(calls: (Call | undefined)[], options?: ListenerOptions): C
  )
 }

-interface CallState {
+export interface CallState {
  readonly valid: boolean
  // the result, or undefined if loading or errored/no data
  readonly result: Result | undefined
--- a/src/types/position.d.ts
+++ b/src/types/position.d.ts
@ -1,10 +1,14 @@
-import { BigNumberish } from '@ethersproject/bignumber'
-
-export interface Position {
-  feesEarned: Record<string, BigNumberish>
-  feeLevel: FEE_BIPS
-  tokenAmount0: TokenAmount
-  tokenAmount1: TokenAmount
-  tickLower: BigNumberish
-  tickUpper: BigNumberish
+export interface PositionDetails {
+  nonce: BigNumber
+  operator: string
+  token0: string
+  token1: string
+  fee: number
+  tickLower: number
+  tickUpper: number
+  liquidity: BigNumber
+  feeGrowthInside0LastX128: BigNumber
+  feeGrowthInside1LastX128: BigNumber
+  tokensOwed0: BigNumber
+  tokensOwed1: BigNumber
 }
--- a/src/utils/formatTokenAmount.ts
+++ b/src/utils/formatTokenAmount.ts
@ -0,0 +1,25 @@
+import { Price, TokenAmount } from '@uniswap/sdk-core'
+
+export function formatTokenAmount(amount: TokenAmount | undefined, sigFigs: number) {
+  if (!amount) {
+    return '-'
+  }
+
+  if (parseFloat(amount.toFixed(sigFigs)) < 0.0001) {
+    return '<0.0001'
+  }
+
+  return amount.toSignificant(sigFigs)
+}
+
+export function formatPrice(price: Price | undefined, sigFigs: number) {
+  if (!price) {
+    return '-'
+  }
+
+  if (parseFloat(price.toFixed(sigFigs)) < 0.0001) {
+    return '<0.0001'
+  }
+
+  return price.toSignificant(sigFigs)
+}
--- a/yarn.lock
+++ b/yarn.lock