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Babel NodeJS ES6: SyntaxError: Unexpected token export
Uncaught SyntaxError: Unexpected token :I keep getting “Uncaught SyntaxError: Unexpected token o”Using Node.js require vs. ES6 import/exportHow to resolve Mongoose Connect UNKNOWN?babel-loader jsx SyntaxError: Unexpected token“unexpected token import” in Nodejs5 and babel?NodeJS (ES6): SyntaxError: Unexpected token {NodeJS plans to support import/export es6 (es2015) modulesNode.js - SyntaxError: Unexpected token importnpm start run error “var before = prev.prev || ; TypeError: Cannot read property 'prev' of undefined”
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty height:90px;width:728px;box-sizing:border-box;
I'm trying to use babel to run my NodeJS program, which includes ES6 syntax and exports from the Colyseus library. However, when I run the command:
babel-node server.js
The following error message appears:
export class MyRoom extends colyseus.Room {
^^^^^^
SyntaxError: Unexpected token export
Below is my package.json file:
"name": "app",
"version": "1.0.0",
"description": "a description",
"main": "server.js",
"scripts":
"test": "babel-node server.js",
"build": "babel-node server.js"
,
"author": "henryzhu",
"license": "ISC",
"dependencies":
"actionhero": "^19.1.2",
"colyseus": "^0.9.33",
"easytimer.js": "^2.3.0",
"express": "^4.16.3",
"socket.io": "^2.1.0",
"socketio": "^1.0.0",
"uniqid": "^5.0.3"
,
"devDependencies":
"babel-cli": "^6.26.0",
"babel-preset-env": "^1.7.0",
"babel-preset-es2015": "^6.24.1"
Below is my server.js file:
var colyseus = require("colyseus");
var http = require("http");
var express = require("express");
var port = process.env.port || 3000;
var app = express();
app.use(express.static("public", dotfiles: 'allow' ));
var gameServer = new colyseus.Server(
server: http.createServer(app)
);
export class MyRoom extends colyseus.Room
// When room is initialized
onInit (options)
gameServer.listen(port);
javascript node.js ecmascript-6
asked Mar 24 at 23:31
Adam LeeAdam Lee
999
add a comment |
I'm trying to use babel to run my NodeJS program, which includes ES6 syntax and exports from the Colyseus library. However, when I run the command:
babel-node server.js
The following error message appears:
export class MyRoom extends colyseus.Room {
^^^^^^
SyntaxError: Unexpected token export
Below is my package.json file:
"name": "app",
"version": "1.0.0",
"description": "a description",
"main": "server.js",
"scripts":
"test": "babel-node server.js",
"build": "babel-node server.js"
,
"author": "henryzhu",
"license": "ISC",
"dependencies":
"actionhero": "^19.1.2",
"colyseus": "^0.9.33",
"easytimer.js": "^2.3.0",
"express": "^4.16.3",
"socket.io": "^2.1.0",
"socketio": "^1.0.0",
"uniqid": "^5.0.3"
,
"devDependencies":
"babel-cli": "^6.26.0",
"babel-preset-env": "^1.7.0",
"babel-preset-es2015": "^6.24.1"
Below is my server.js file:
var colyseus = require("colyseus");
var http = require("http");
var express = require("express");
var port = process.env.port || 3000;
var app = express();
app.use(express.static("public", dotfiles: 'allow' ));
var gameServer = new colyseus.Server(
server: http.createServer(app)
);
export class MyRoom extends colyseus.Room
// When room is initialized
onInit (options)
gameServer.listen(port);
javascript node.js ecmascript-6
asked Mar 24 at 23:31
Adam LeeAdam Lee
999
what does your babel config look like?
– miyu
Mar 24 at 23:31
add a comment |
I'm trying to use babel to run my NodeJS program, which includes ES6 syntax and exports from the Colyseus library. However, when I run the command:
babel-node server.js
The following error message appears:
export class MyRoom extends colyseus.Room {
^^^^^^
SyntaxError: Unexpected token export
Below is my package.json file:
"name": "app",
"version": "1.0.0",
"description": "a description",
"main": "server.js",
"scripts":
"test": "babel-node server.js",
"build": "babel-node server.js"
,
"author": "henryzhu",
"license": "ISC",
"dependencies":
"actionhero": "^19.1.2",
"colyseus": "^0.9.33",
"easytimer.js": "^2.3.0",
"express": "^4.16.3",
"socket.io": "^2.1.0",
"socketio": "^1.0.0",
"uniqid": "^5.0.3"
,
"devDependencies":
"babel-cli": "^6.26.0",
"babel-preset-env": "^1.7.0",
"babel-preset-es2015": "^6.24.1"
Below is my server.js file:
var colyseus = require("colyseus");
var http = require("http");
var express = require("express");
var port = process.env.port || 3000;
var app = express();
app.use(express.static("public", dotfiles: 'allow' ));
var gameServer = new colyseus.Server(
server: http.createServer(app)
);
export class MyRoom extends colyseus.Room
// When room is initialized
onInit (options)
gameServer.listen(port);
javascript node.js ecmascript-6
asked Mar 24 at 23:31
Adam LeeAdam Lee
999
I'm trying to use babel to run my NodeJS program, which includes ES6 syntax and exports from the Colyseus library. However, when I run the command:
babel-node server.js
The following error message appears:
export class MyRoom extends colyseus.Room {
^^^^^^
SyntaxError: Unexpected token export
Below is my package.json file:
"name": "app",
"version": "1.0.0",
"description": "a description",
"main": "server.js",
"scripts":
"test": "babel-node server.js",
"build": "babel-node server.js"
,
"author": "henryzhu",
"license": "ISC",
"dependencies":
"actionhero": "^19.1.2",
"colyseus": "^0.9.33",
"easytimer.js": "^2.3.0",
"express": "^4.16.3",
"socket.io": "^2.1.0",
"socketio": "^1.0.0",
"uniqid": "^5.0.3"
,
"devDependencies":
"babel-cli": "^6.26.0",
"babel-preset-env": "^1.7.0",
"babel-preset-es2015": "^6.24.1"
Below is my server.js file:
var colyseus = require("colyseus");
var http = require("http");
var express = require("express");
var port = process.env.port || 3000;
var app = express();
app.use(express.static("public", dotfiles: 'allow' ));
var gameServer = new colyseus.Server(
server: http.createServer(app)
);
export class MyRoom extends colyseus.Room
// When room is initialized
onInit (options)
gameServer.listen(port);
javascript node.js ecmascript-6
javascript node.js ecmascript-6
asked Mar 24 at 23:31
Adam LeeAdam Lee
999
asked Mar 24 at 23:31
Adam LeeAdam Lee
999
edited Mar 24 at 23:32
Adam Lee
asked Mar 24 at 23:31
Adam LeeAdam Lee
999
asked Mar 24 at 23:31
Adam LeeAdam Lee
999
asked Mar 24 at 23:31
Adam LeeAdam Lee
999
999
what does your babel config look like?
– miyu
Mar 24 at 23:31
add a comment |
what does your babel config look like?
– miyu
Mar 24 at 23:31
what does your babel config look like?
– miyu
Mar 24 at 23:31
what does your babel config look like?
– miyu
Mar 24 at 23:31
add a comment |
2 Answers
2
active
oldest
votes
babel-node is presumably expecting the node style module syntax:
module.exports = ...
instead of the es6 style:
export class ...
EDIT:
You might be able to fix it by specifying a .babelrc file like so:
"presets": ["env"]
with package babel-preset-env installed
answered Mar 24 at 23:34
jsdeveloperjsdeveloper
2,261158
add a comment |
Add a config file with the following (.babel.config.js):
module.exports =
presets: [
'@babel/preset-env'
]
;
Then run:
babel-node --config-file .babel.config.js server.js
answered Mar 25 at 0:16
ryanpcmcquenryanpcmcquen
3,1961329
1
That doesn't seem to work with"@babel/cli": "^7.2.3", "@babel/core": "^7.4.0", "@babel/node": "^7.2.2", "@babel/preset-env": "^7.0.0". I always fail to understand why there are so many ways for doing one such simple thing as transpiling some code in JS.
– cglacet
Apr 2 at 1:28
@cglacet, that is a different major version of Babel, have you checked their docs on this? I'm guessing a CLI flag changed between versions.
– ryanpcmcquen
Apr 2 at 21:34
I think I found the problem. If you have your config in yourroot/directory and call a script that is in sayroot/folderAand that script imports something fromroot/folderBthen thejsfile fromfolderBdoesn't seem to be transpiled correctly (ignored?). That look like a bug to me but maybe I don't understand the responsibility of the config file (I had thought of it as a "project configuration" but apparently that's not how it is supposed to be understood).
– cglacet
Apr 7 at 15:09
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
babel-node is presumably expecting the node style module syntax:
module.exports = ...
instead of the es6 style:
export class ...
EDIT:
You might be able to fix it by specifying a .babelrc file like so:
"presets": ["env"]
with package babel-preset-env installed
answered Mar 24 at 23:34
jsdeveloperjsdeveloper
2,261158
add a comment |
babel-node is presumably expecting the node style module syntax:
module.exports = ...
instead of the es6 style:
export class ...
EDIT:
You might be able to fix it by specifying a .babelrc file like so:
"presets": ["env"]
with package babel-preset-env installed
answered Mar 24 at 23:34
jsdeveloperjsdeveloper
2,261158
add a comment |
babel-node is presumably expecting the node style module syntax:
module.exports = ...
instead of the es6 style:
export class ...
EDIT:
You might be able to fix it by specifying a .babelrc file like so:
"presets": ["env"]
with package babel-preset-env installed
answered Mar 24 at 23:34
jsdeveloperjsdeveloper
2,261158
babel-node is presumably expecting the node style module syntax:
module.exports = ...
instead of the es6 style:
export class ...
EDIT:
You might be able to fix it by specifying a .babelrc file like so:
"presets": ["env"]
with package babel-preset-env installed
answered Mar 24 at 23:34
jsdeveloperjsdeveloper
2,261158
answered Mar 24 at 23:34
jsdeveloperjsdeveloper
2,261158
answered Mar 24 at 23:34
jsdeveloperjsdeveloper
2,261158
answered Mar 24 at 23:34
jsdeveloperjsdeveloper
2,261158
2,261158
add a comment |
add a comment |
Add a config file with the following (.babel.config.js):
module.exports =
presets: [
'@babel/preset-env'
]
;
Then run:
babel-node --config-file .babel.config.js server.js
answered Mar 25 at 0:16
ryanpcmcquenryanpcmcquen
3,1961329
1
That doesn't seem to work with"@babel/cli": "^7.2.3", "@babel/core": "^7.4.0", "@babel/node": "^7.2.2", "@babel/preset-env": "^7.0.0". I always fail to understand why there are so many ways for doing one such simple thing as transpiling some code in JS.
– cglacet
Apr 2 at 1:28
@cglacet, that is a different major version of Babel, have you checked their docs on this? I'm guessing a CLI flag changed between versions.
– ryanpcmcquen
Apr 2 at 21:34
I think I found the problem. If you have your config in yourroot/directory and call a script that is in sayroot/folderAand that script imports something fromroot/folderBthen thejsfile fromfolderBdoesn't seem to be transpiled correctly (ignored?). That look like a bug to me but maybe I don't understand the responsibility of the config file (I had thought of it as a "project configuration" but apparently that's not how it is supposed to be understood).
– cglacet
Apr 7 at 15:09
add a comment |
Add a config file with the following (.babel.config.js):
module.exports =
presets: [
'@babel/preset-env'
]
;
Then run:
babel-node --config-file .babel.config.js server.js
answered Mar 25 at 0:16
ryanpcmcquenryanpcmcquen
3,1961329
1
That doesn't seem to work with"@babel/cli": "^7.2.3", "@babel/core": "^7.4.0", "@babel/node": "^7.2.2", "@babel/preset-env": "^7.0.0". I always fail to understand why there are so many ways for doing one such simple thing as transpiling some code in JS.
– cglacet
Apr 2 at 1:28
@cglacet, that is a different major version of Babel, have you checked their docs on this? I'm guessing a CLI flag changed between versions.
– ryanpcmcquen
Apr 2 at 21:34
I think I found the problem. If you have your config in yourroot/directory and call a script that is in sayroot/folderAand that script imports something fromroot/folderBthen thejsfile fromfolderBdoesn't seem to be transpiled correctly (ignored?). That look like a bug to me but maybe I don't understand the responsibility of the config file (I had thought of it as a "project configuration" but apparently that's not how it is supposed to be understood).
– cglacet
Apr 7 at 15:09
add a comment |
Add a config file with the following (.babel.config.js):
module.exports =
presets: [
'@babel/preset-env'
]
;
Then run:
babel-node --config-file .babel.config.js server.js
answered Mar 25 at 0:16
ryanpcmcquenryanpcmcquen
3,1961329
Add a config file with the following (.babel.config.js):
module.exports =
presets: [
'@babel/preset-env'
]
;
Then run:
babel-node --config-file .babel.config.js server.js
answered Mar 25 at 0:16
ryanpcmcquenryanpcmcquen
3,1961329
answered Mar 25 at 0:16
ryanpcmcquenryanpcmcquen
3,1961329
answered Mar 25 at 0:16
ryanpcmcquenryanpcmcquen
3,1961329
answered Mar 25 at 0:16
ryanpcmcquenryanpcmcquen
3,1961329
3,1961329
1
That doesn't seem to work with"@babel/cli": "^7.2.3", "@babel/core": "^7.4.0", "@babel/node": "^7.2.2", "@babel/preset-env": "^7.0.0". I always fail to understand why there are so many ways for doing one such simple thing as transpiling some code in JS.
– cglacet
Apr 2 at 1:28
@cglacet, that is a different major version of Babel, have you checked their docs on this? I'm guessing a CLI flag changed between versions.
– ryanpcmcquen
Apr 2 at 21:34
I think I found the problem. If you have your config in yourroot/directory and call a script that is in sayroot/folderAand that script imports something fromroot/folderBthen thejsfile fromfolderBdoesn't seem to be transpiled correctly (ignored?). That look like a bug to me but maybe I don't understand the responsibility of the config file (I had thought of it as a "project configuration" but apparently that's not how it is supposed to be understood).
– cglacet
Apr 7 at 15:09
add a comment |
1
That doesn't seem to work with"@babel/cli": "^7.2.3", "@babel/core": "^7.4.0", "@babel/node": "^7.2.2", "@babel/preset-env": "^7.0.0". I always fail to understand why there are so many ways for doing one such simple thing as transpiling some code in JS.
– cglacet
Apr 2 at 1:28
@cglacet, that is a different major version of Babel, have you checked their docs on this? I'm guessing a CLI flag changed between versions.
– ryanpcmcquen
Apr 2 at 21:34
I think I found the problem. If you have your config in yourroot/directory and call a script that is in sayroot/folderAand that script imports something fromroot/folderBthen thejsfile fromfolderBdoesn't seem to be transpiled correctly (ignored?). That look like a bug to me but maybe I don't understand the responsibility of the config file (I had thought of it as a "project configuration" but apparently that's not how it is supposed to be understood).
– cglacet
Apr 7 at 15:09
1
1
That doesn't seem to work with
"@babel/cli": "^7.2.3", "@babel/core": "^7.4.0", "@babel/node": "^7.2.2", "@babel/preset-env": "^7.0.0". I always fail to understand why there are so many ways for doing one such simple thing as transpiling some code in JS.– cglacet
Apr 2 at 1:28
That doesn't seem to work with
"@babel/cli": "^7.2.3", "@babel/core": "^7.4.0", "@babel/node": "^7.2.2", "@babel/preset-env": "^7.0.0". I always fail to understand why there are so many ways for doing one such simple thing as transpiling some code in JS.– cglacet
Apr 2 at 1:28
@cglacet, that is a different major version of Babel, have you checked their docs on this? I'm guessing a CLI flag changed between versions.
– ryanpcmcquen
Apr 2 at 21:34
@cglacet, that is a different major version of Babel, have you checked their docs on this? I'm guessing a CLI flag changed between versions.
– ryanpcmcquen
Apr 2 at 21:34
I think I found the problem. If you have your config in your
root/ directory and call a script that is in say root/folderA and that script imports something from root/folderB then the js file from folderB doesn't seem to be transpiled correctly (ignored?). That look like a bug to me but maybe I don't understand the responsibility of the config file (I had thought of it as a "project configuration" but apparently that's not how it is supposed to be understood).– cglacet
Apr 7 at 15:09
I think I found the problem. If you have your config in your
root/ directory and call a script that is in say root/folderA and that script imports something from root/folderB then the js file from folderB doesn't seem to be transpiled correctly (ignored?). That look like a bug to me but maybe I don't understand the responsibility of the config file (I had thought of it as a "project configuration" but apparently that's not how it is supposed to be understood).– cglacet
Apr 7 at 15:09
add a comment |
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what does your babel config look like?
– miyu
Mar 24 at 23:31