expo start fails with ERR_INVALID_ARG_TYPE in watchFile()

[littledivy]

divy@divy ~/g/rn-app (master) [1]> deno task start
Task start expo start
Starting project at /home/divy/gh/rn-app
TypeError [ERR_INVALID_ARG_TYPE]: The "listener" argument must be of type function. Received undefined
TypeError [ERR_INVALID_ARG_TYPE]ener" argument must be of type function. Received undefined
    at __node_internal_ (ext:deno_node/internal/validators.mjs:270:13)
    at checkListener (ext:deno_node/_events.mjs:106:3)
    at _addListener (ext:deno_node/_events.mjs:416:3)
    at StatWatcher.addListener (ext:deno_node/_events.mjs:482:10)
    at Object.watchFile (ext:deno_node/_fs/_fs_watch.ts:98:8)
    at FileNotifier.startWatchingFile (file:///home/divy/gh/rn-app/node_modules/.deno/@expo+cli@0.17.8/node_modules/@expo/cli/build/src/utils/FileNotifier.js:81:34)
    at FileNotifier.watchFile (file:///home/divy/gh/rn-app/node_modules/.deno/@expo+cli@0.17.8/node_modules/@expo/cli/build/src/utils/fn.js:14:24)
    at FileNotifier.startObserving (file:///home/divy/gh/rn-app/node_modules/.deno/@expo+cli@0.17.8/node_modules/@expo/cli/build/src/utils/FileNotifier.js:66:25)
    at DevServerManager.watchBabelConfig (file:///home/divy/gh/rn-app/node_modules/.deno/@expo+cli@0.17.8/node_modules/@expo/cli/build/src/start/server/DevServerManager.js:71:18)
    at new DevServerManager (file:///home/divy/gh/rn-app/node_modules/.deno/@expo+cli@0.17.8/node_modules/@expo/cli/build/src/start/server/DevServerManager.js:58:30)