slackにメッセージを通知する

README.md

promise

tscコンパイル前に、promiseも変換できるようにtsconfig.json内に 「es2015.promise」を追記します。

"lib" : ["es2015", "es2015.iterable", "dom", "es2015.promise"]

その後、tscを実行して下さい。

slackPostMessage.ts

class slack {
    private path = "https://slack.com/api/";
    
    private request(url:string):any {
        return new Promise(resolve => {
            let xhr = new XMLHttpRequest();
            xhr.onload = ()=>{
                resolve(JSON.parse(xhr.response));
            };
            xhr.open("GET", url);
            xhr.send();
        });
    }
    
    private urlParametor(params:{[key:string]:string}):string {
        let queryArray: Array<string> = new Array();
        
        for(var key in params){
          console.log(key + '=' + encodeURIComponent(params[key]));
          queryArray.push(key + '=' + encodeURIComponent(params[key]));
        }
        
        const query = queryArray.join('&');
        return query;
    }
    
    public async postMessage(params:{[key:string]:string}){
        const method = "chat.postMessage";
        const query = this.urlParametor(params);
        const url = this.path + method + "?" + query;
        let res:any = await this.request(url);
        
        return res;
    }
}

const s = new slack();
const params:{[key:string]:string} = {
  "token": "xoxp-xxxxxxx",
  "text": "test!!!!",
  "channel": "general"
};

const res = s.postMessage(params);