Crash report: `TypeError: Cannot read properties of undefined (reading '0')`

URL

https://swap.keyring.app/#/swap?chain=mainnet

swap state

{
  "INPUT": {
    "currencyId": "ETH"
  },
  "OUTPUT": {
    "currencyId": null
  },
  "independentField": "INPUT",
  "typedValue": "",
  "recipient": null
}

Error

TypeError: Cannot read properties of undefined (reading '0')

Stacktrace

TypeError: Cannot read properties of undefined (reading '0')
    at GI (https://swap.keyring.app/static/js/main.0a76b5e2.chunk.js:1:575829)
    at oo (https://swap.keyring.app/static/js/34.5b0b48ce.chunk.js:2:1806898)
    at Ho (https://swap.keyring.app/static/js/34.5b0b48ce.chunk.js:2:1816465)
    at Xf (https://swap.keyring.app/static/js/34.5b0b48ce.chunk.js:2:1860189)
    at Pu (https://swap.keyring.app/static/js/34.5b0b48ce.chunk.js:2:1846439)
    at Cu (https://swap.keyring.app/static/js/34.5b0b48ce.chunk.js:2:1846367)
    at Su (https://swap.keyring.app/static/js/34.5b0b48ce.chunk.js:2:1846230)
    at wu (https://swap.keyring.app/static/js/34.5b0b48ce.chunk.js:2:1843196)
    at https://swap.keyring.app/static/js/34.5b0b48ce.chunk.js:2:1792690
    at t.unstable_runWithPriority (https://swap.keyring.app/static/js/34.5b0b48ce.chunk.js:2:1869927)

Device data

{
  "ua": "Mozilla/5.0 (Linux; Android 9; CPH2083) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Mobile Safari/537.36",
  "browser": {
    "name": "Chrome",
    "version": "105.0.0.0",
    "major": "105"
  },
  "engine": {
    "name": "Blink",
    "version": "105.0.0.0"
  },
  "os": {
    "name": "Android",
    "version": "9"
  },
  "device": {
    "vendor": "OPPO",
    "model": "CPH2083",
    "type": "mobile"
  },
  "cpu": {}
}

Reproduce the crash at https://swap.keyring.app/#/swap?chain=mainnet using the reported swap state, then trace the stack from static/js/main.0a76b5e2.chunk.js and static/js/34.5b0b48ce.chunk.js. Done means the swap page no longer crashes when OUTPUT.currencyId is null and the reported state can be rendered safely.