I'm creating a very basic project with Nodejs for accessing SQL Server database. The steps I take are:
I create the folder for the app ang go into it
I execute "npm init -y"
I execute "npm install mssql"
I copy the short example of the documentation (changing the connetion string values) in index.js:
const sql = require('mssql');
async () => {
try {
await sql.connect('Server=localhost,1433;Database=database;User Id=username;Password=password;Encrypt=true');
const result = await sql.query("select * from mytable");
console.dir(result);
} catch (err) {
console.log(err);
}
};
I execute "node index.js"
Then I get the following error:
C:\Users\User\Desktop\project\app\node_modules\tedious\lib\connection.js:1448
const [, major, minor, build] = /^(\d+)\.(\d+)\.(\d+)/.exec(_package.version) ?? ['0.0.0', '0', '0', '0'];
^
SyntaxError: Unexpected token '?'
at wrapSafe (internal/modules/cjs/loader.js:915:16)
at Module._compile (internal/modules/cjs/loader.js:963:27)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1027:10)
at Module.load (internal/modules/cjs/loader.js:863:32)
at Function.Module._load (internal/modules/cjs/loader.js:708:14)
at Module.require (internal/modules/cjs/loader.js:887:19)
at require (internal/modules/cjs/helpers.js:74:18)
at Object.<anonymous> (C:\Users\User\Desktop\project\app\node_modules\tedious\lib\tedious.js:59:42)
at Module._compile (internal/modules/cjs/loader.js:999:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1027:10)
What can I do for fixing that and be able to execute the code?
Related
I created a database with the newest version of SQLiteStudio. If the database is completely empty, then everything works fine, but already one single table will stop loading the database successfully.
This is the code I use for connecting to the database when the bot starts:
var path = "/home/pi/Desktop/MelloBot";
const dbPath = require(path + '/ItemDatabase.db');
let db = new sqlite3.Database(dbPath, sqlite3.OPEN_READWRITE, (err) => {
if (err) {
return console.error(err.message);
}
message.channel.send('Connected to the Item database.');
});
And this is the SQLite command for my table:
CREATE TABLE Items (
Name STRING,
ID INTEGER PRIMARY KEY AUTOINCREMENT
);
And in the end, this is the error I get when connecting to a non-empty database:
/home/pi/Desktop/MelloBot/ItemDatabase.db:1
(function (exports, require, module, __filename, __dirname) { SQLite format 3
^^^^^^
SyntaxError: Unexpected identifier
at createScript (vm.js:80:10)
at Object.runInThisContext (vm.js:139:10)
at Module._compile (module.js:616:28)
at Object.Module._extensions..js (module.js:663:10)
at Module.load (module.js:565:32)
at tryModuleLoad (module.js:505:12)
at Function.Module._load (module.js:497:3)
at Module.require (module.js:596:17)
at require (internal/module.js:11:18)
at Object.main (/home/pi/Desktop/MelloBot/adminCommands/item.js:9:24)
I haven't found any solution for this "Format"-error.
I am extremely new to Azure Bot Services and the Azure platform as a whole.
I am trying to create a Chatbot using node.js but I am getting the below error while trying to connect to CosmosDB.
The bot was running fine before I added the below code to connect to CosmosDB.
Any help or guidance on this would be appreciated!
P.S. - I have added the '#azure/cosmos' package and the code runs without any error if I just remove the try-catch segment.
Code for connecting to CosmosDB:
var async=require("async");
var await=require("await");
const CosmosClientInterface = require("#azure/cosmos").CosmosClient;
const databaseId = "ToDoList";
const containerId = "custInfo";
const endpoint = "<Have provided the Endpoint URL here>";
const authKey = "<Have provided the AuthKey here>";
const cosmosClient = new CosmosClientInterface({
endpoint: endpoint,
auth: {
masterKey: authKey
},
consistencyLevel: "Session"
});
async function readDatabase() {
const { body: databaseDefinition } = await cosmosClient.database(databaseId).read();
console.log(`Reading database:\n${databaseDefinition.id}\n`);
}
Error Message:
Sat Jan 12 2019 03:40:08 GMT+0000 (Coordinated Universal Time): Application has thrown an uncaught exception and is terminated:
D:\home\site\wwwroot\app.js:40
async function readDatabase() {
^^^^^^^^
SyntaxError: Unexpected token function
at Object.exports.runInThisContext (vm.js:76:16)
at Module._compile (module.js:542:28)
at Object.Module._extensions..js (module.js:579:10)
at Module.load (module.js:487:32)
at tryModuleLoad (module.js:446:12)
at Function.Module._load (module.js:438:3)
at Module.require (module.js:497:17)
at require (internal/module.js:20:19)
at Object.<anonymous> (D:\Program Files (x86)\iisnode\interceptor.js:459:1)
at Module._compile (module.js:570:32)
Application has thrown an uncaught exception and is terminated:
D:\home\site\wwwroot\app.js:40
async function readDatabase() {
^^^^^^^^
SyntaxError: Unexpected token function
at Object.exports.runInThisContext (vm.js:76:16)
at Module._compile (module.js:542:28)
at Object.Module._extensions..js (module.js:579:10)
at Module.load (module.js:487:32)
at tryModuleLoad (module.js:446:12)
at Function.Module._load (module.js:438:3)
at Module.require (module.js:497:17)
at require (internal/module.js:20:19)
at Object.<anonymous> (D:\Program Files (x86)\iisnode\interceptor.js:459:1)
at Module._compile (module.js:570:32)
You can't await without being in an async function.
Dump all your code into a async function main(){} method, then call main().catch((err) => console.log(err)); or some similar thing to start the promise and handle errors.
You can see a sample of that kind of pattern here in this sample: https://github.com/Azure/azure-cosmos-js/blob/master/samples/ChangeFeed/app.js#L33
--- EDIT 1 ---
Here's your sample rewritten with Promises:
const CosmosClientInterface = require("#azure/cosmos").CosmosClient;
const databaseId = "ToDoList";
const containerId = "custInfo";
const endpoint = "<Have provided the Endpoint URL here>";
const authKey = "<Have provided the AuthKey here>";
const cosmosClient = new CosmosClientInterface({
endpoint: endpoint,
auth: {
masterKey: authKey
},
consistencyLevel: "Session"
});
cosmosClient.database(databaseId).read().then(({body: databaseDefinition}) => {
console.log(`Reading database:\n${databaseDefinition.id}\n`);
}).catch((err) {
console.err("Something went wrong" + err);
});
For your sample above, you don't need to import async/await, they are keywords in JavaScript now.
Here's a blog post that compares and contrasts Async/Await and Promises: https://hackernoon.com/should-i-use-promises-or-async-await-126ab5c98789
Trying to run the rippleApi with ripple-lib facing issues like syntaxerror .
Am new to Node and ripple-lib . Please guide me to get rid of this. Thanks in advance
node ripple.js
My Code in ripple.js is
const RippleAPI = require('ripple-lib').RippleAPI;
const Ripple = new RippleAPI({
server: 'wss://s1.ripple.com:443'
});
Ripple.on('error', function (errorCode, errorMessage) {
resp.json('{"status":0,"msg":"Unable to withdraw, problem occured. '+errorMessage+'."}');
});
Ripple.on('connected', function () {
});
Ripple.on('disconnected', function (code) {
console.log('disconnected, code:', code);
});
Ripple.connect().then(function () {
return Ripple.getServerInfo();
}).then(function (server_info) {
var rippleAddress = Ripple.generateAddress();
console.log(rippleAddress);process.exit(-1);
}).catch(console.error);
The Output am getting is
/var/www/html/node_modules/ripple-lib/dist/npm/api.js:83
constructor(options = {}) {
^
SyntaxError: Unexpected token =
at exports.runInThisContext (vm.js:53:16)
at Module._compile (module.js:374:25)
at Object.Module._extensions..js (module.js:417:10)
at Module.load (module.js:344:32)
at Function.Module._load (module.js:301:12)
at Module.require (module.js:354:17)
at require (internal/module.js:12:17)
at Object.<anonymous> (/var/www/html/node_modules/ripple-lib/dist/npm/index.js:3:13)
at Module._compile (module.js:410:26)
at Object.Module._extensions..js (module.js:417:10)
You need to upgrade nodejs
curl -sL https://deb.nodesource.com/setup_8.x | sudo -E bash -
sudo apt-get install -y nodejs
I had been using node-wit v3.3.2
Today, I wanted to update and use the latest version.
But I'm unable to import node-wit. Not sure why.
I simply copied the code given in their documentation.
'use strict'
var MY_TOKEN="xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
const {Wit, log} = require('node-wit');
const client = new Wit({
accessToken: MY_TOKEN,
actions: {
send(request, response) {
return new Promise(function(resolve, reject) {
console.log(JSON.stringify(response));
return resolve();
});
},
myAction({sessionId, context, text, entities}) {
console.log(Session ${sessionId} received ${text});
console.log(The current context is ${JSON.stringify(context)});
console.log(Wit extracted ${JSON.stringify(entities)});
return Promise.resolve(context);
}
},
logger: new log.Logger(log.DEBUG) // optional
});
The terminal shows this:
const {Wit, log} = require('node-wit');
^
SyntaxError: Unexpected token {
at exports.runInThisContext (vm.js:53:16)
at Module._compile (module.js:373:25)
at Object.Module._extensions..js (module.js:416:10)
at Module.load (module.js:343:32)
at Function.Module._load (module.js:300:12)
at Function.Module.runMain (module.js:441:10)
at startup (node.js:139:18)
at node.js:974:3
Could be the node version you are using. You'll need to use the flag --harmony_destructuring when using a lower version.
Taken from: https://github.com/wit-ai/node-wit
# Node.js <= 6.x.x, add the flag --harmony_destructuring
node --harmony_destructuring examples/basic.js <MY_TOKEN>
# Node.js >= v6.x.x
node examples/basic.js <MY_TOKEN>
I am getting the following error in Travis-ci when using Node 4.3.2:
SyntaxError in plugin 'gulp-mocha' Unexpected token =
Everything works when using Node 6, but not 4.3.2. Here is the stack trace:
[12:05:11] Starting 'build'...
[12:05:11] Finished 'build' after 13 μs
[12:05:11] Starting 'tests'...
SyntaxError in plugin 'gulp-mocha'
Message:
Unexpected token =
Stack:
SyntaxError: Unexpected token =
at exports.runInThisContext (vm.js:53:16)
at Module._compile (module.js:373:25)
at Object.Module._extensions..js (module.js:416:10)
at Module.load (module.js:343:32)
at Function.Module._load (module.js:300:12)
at Module.require (module.js:353:17)
at require (internal/module.js:12:17)
This is the task I am running:
gulp.task('tests', ['build'], (cb) => {
if (hasError) {
cb();
return;
}
return gulp.src('build/test/**/*.js', {read: false})
.pipe(mocha())
.on("error", handleError);
});
How can I correct this?
The older version of Node is being used, as this is an AWS Lambda application.