在room中通过room.topic()获取不到room的topic about wechaty HOT 3 CLOSED

can not understand. please try the latest code.

if issue still there, I need u to provide the detail.

from wechaty.

please feel free to re-open this issue if you can provide Steps to reproduce the behavior. thanks.

from wechaty.

@#### Wechaty Doctor

1. Wechaty version: #git[cd7c7dd log for #55]
2. Darwin x64 version 15.6.0 memory 38/4096 MB
3. Docker: false

when I try to get the topic of msgRoom as follows

.on('message', m => {
  m.ready()
  .then(msg => {

    const msgRoom = m.room()
    const msgRoomTopic = msgRoom.topic()
    console.log(msgRoomTopic)  
    ....

then, I can't run wechaty, error log as follows:

lijiaruideMacBook-Air:orangiss lijiarui$ WCHATY_LOG=silly npm run ts-node orangiss/juzimi.ts

[email protected] ts-node /Users/lijiarui/git/wechaty
ts-node "orangiss/juzimi.ts"

/Users/lijiarui/git/wechaty/node_modules/ts-node/src/index.ts:308
throw new TSError(diagnosticList)
^
TSError: ⨯ Unable to compile TypeScript
orangiss/juzimi.ts (204,26): Object is possibly 'null'. (2531)
orangiss/juzimi.ts: Emit skipped
at getOutput (/Users/lijiarui/git/wechaty/node_modules/ts-node/src/index.ts:308:17)
at /Users/lijiarui/git/wechaty/node_modules/ts-node/src/index.ts:334:18
at Object.compile (/Users/lijiarui/git/wechaty/node_modules/ts-node/src/index.ts:488:17)
at Module.m._compile (/Users/lijiarui/git/wechaty/node_modules/ts-node/src/index.ts:392:44)
at Module._extensions..js (module.js:550:10)
at Object.require.extensions.(anonymous function) as .ts
at Module.load (module.js:458:32)
at tryModuleLoad (module.js:417:12)
at Function.Module._load (module.js:409:3)
at Function.Module.runMain (module.js:575:10)

npm ERR! Darwin 15.6.0
npm ERR! argv "/usr/local/bin/node" "/usr/local/bin/npm" "run" "ts-node" "orangiss/juzimi.ts"
npm ERR! node v6.2.0
npm ERR! npm v3.8.9
npm ERR! code ELIFECYCLE
npm ERR! [email protected] ts-node: ts-node "orangiss/juzimi.ts"
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the [email protected] ts-node script 'ts-node "orangiss/juzimi.ts"'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the wechaty package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR! ts-node "orangiss/juzimi.ts"
npm ERR! You can get information on how to open an issue for this project with:
npm ERR! npm bugs wechaty
npm ERR! Or if that isn't available, you can get their info via:
npm ERR! npm owner ls wechaty
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR! /Users/lijiarui/git/wechaty/orangiss/npm-debug.log

then, I change the code as follows:

.on('message', m => {
  m.ready()
  .then(msg => {

    const msgRoom = m.room()
    const msgRoomTopic = (msgRoom as any).topic()
    console.log(msgRoomTopic)  
    ....

all works well!

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