? Pancake Swap Exchange on BSC testnet

Live instance working against `0xD99D1c33F9fC3444f8101754aBC46c52416550D1`:

https://pancakeswap.ibhagwan.workers.dev

This router was deployed by PancakeSwap and published on their twitter, for other options with more liquidity see Testnet Routers

V2 SDK for the BSC testnet

Since there isn’t an official PancakeSwap on testnet and the v2 frontend swap interface code isn’t published on the PancakeSwap github I decided to adjust pancake-swap-interface-v1 for v2 routers on the BSC testnet as per this comment on issue #365.

This fork requires a fork of cd3d-dex-libs-sdk, instructions and code can at https://github.com/ibhagwan/pancakeswap-sdk-v2.

Step 1: Build `pancakeswap-sdk-v2`

❯ git clone https://github.com/pancakeswap/pancakeswap-sdk-v2

Modify FACTORY_ADDRESS & INIT_CODE_HASH in src/constants.ts

Modify the testnet WBNB at the end of entities/token.ts:

[ChainId.BSCTESTNET]: new Token(
    ChainId.BSCTESTNET,
    '0xae13d989dac2f0debff460ac112a837c89baa7cd',
    18,
    'WBNB',
    'Wrapped BNB'
)

Note: if you’d like to use the default testnet router 0xD99D1c33F9fC3444f8101754aBC46c52416550D1 you can skip the editing and git clone https://github.com/ibhagwan/pancakeswap-sdk-v2.git instead.

Build:

❯ yarn
❯ npm run build

Step 2:

Clone and branch to the commit before V2 changes:

❯ git clone https://github.com/pancakeswap/pancake-swap-interface-v1
❯ git branch pancake_v2 0257017
❯ git checkout pancake_v2

Create .env with the below contents:

REACT_APP_NETWORK_URL="https://data-seed-prebsc-1-s1.binance.org:8545"
REACT_APP_CHAIN_ID="97"

Modify ROUTER_ADDRESS in src/constants/index.ts

Edit the tokens you’d like to appear in the UI in src/constants/token/pancakeswap.json (change the token address and set chainId to 97)

Search the entire project for 'cd3d-dex-libs-sdk' and replace with 'cd3d-dex-libs-sdk'

I do this with vim, search the entire project with fzf|rg into a quickfix list and use
:cdo %s/'@pancakeswap-libs\/sdk'/'@pancakeswap-libs\/sdk-v2'/g

❯ yarn
❯ npm install ../pancakeswap-sdk-v2
❯ rm -rf ./node_modules/cd3d-dex-libs-sdk
❯ yarn start

Starting the development server...
Compiled successfully!
You can now view @pancakeswap/interface in the browser.

  Local:            http://localhost:3000
  On Your Network:  http://10.10.10.9:3000

Note that the development build is not optimized.
To create a production build, use yarn build.