I am working on an Express based backend API with Firebase. I have some issues with Firebase configuration.
When I try to require firebase I get the following error.
const firebase = require('firebase');
node:internal/modules/cjs/loader:499
throw e;
^
Error [ERR_PACKAGE_PATH_NOT_EXPORTED]: No "exports" main defined in /home/***/Desktop/Express/DemoBackend/node_modules/firebase/package.json
at new NodeError (node:internal/errors:387:5)
at throwExportsNotFound (node:internal/modules/esm/resolve:439:9)
at packageExportsResolve (node:internal/modules/esm/resolve:718:3)
at resolveExports (node:internal/modules/cjs/loader:493:36)
at Module._findPath (node:internal/modules/cjs/loader:533:31)
at Module._resolveFilename (node:internal/modules/cjs/loader:942:27)
at Module._load (node:internal/modules/cjs/loader:804:27)
at Module.require (node:internal/modules/cjs/loader:1022:19)
at require (node:internal/modules/cjs/helpers:102:18)
at Object.<anonymous> (/home/***/Desktop/Express/DemoBackend/firebase_config.js:1:18)
{
code: 'ERR_PACKAGE_PATH_NOT_EXPORTED'
}
I am working with NodeJS 18.6.0
Thanks for your help!
Related
I am stuck with an issue,
I have to generate a 6 digit alphanumeric CODE which should be unique and for that i am using nanoid,
Now when i code this:
const {nanoid} = require("nanoid");
const ID = nanoid();
I got error:
const {nanoid} = require("nanoid");
^
Error [ERR_REQUIRE_ESM]: require() of ES Module C:\Users\HP\Desktop\test\node_modules\nanoid\index.js from C:\Users\HP\Desktop\test\server.js not supported.
Instead change the require of index.js in C:\Users\HP\Desktop\test\server.js to a dynamic import() which is available in all CommonJS modules.
at Object.<anonymous> (C:\Users\HP\Desktop\test\server.js:1:18) {
code: ←[32m'ERR_REQUIRE_ESM'←[39m
}
if I code this:
import { nanoid } from 'nanoid'
const id = nanoid() //=> "V1StGXR8_Z5jdHi6B-myT"
i got error:
(node:4636) Warning: To load an ES module, set "type": "module" in the package.json or use the .mjs extension.
(Use `node --trace-warnings ...` to show where the warning was created)
C:\Users\HP\Desktop\test\server.js:4
import { nanoid } from 'nanoid'
^^^^^^
SyntaxError: Cannot use import statement outside a module
at Object.compileFunction (node:vm:352:18)
at wrapSafe (node:internal/modules/cjs/loader:1033:15)
at Module._compile (node:internal/modules/cjs/loader:1069:27)
at Object.Module._extensions..js (node:internal/modules/cjs/loader:1159:10)
at Module.load (node:internal/modules/cjs/loader:981:32)
at Function.Module._load (node:internal/modules/cjs/loader:822:12)
at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:77:12)
at node:internal/main/run_main_module:17:47
Now I have tried changing package.json file
"type":"module"
but my project use babel and it will automatically convert import to require and as result first error come again.
could you please tell me how to do nanoid with require'
Thank you
This is a feature, not a bug. See the changelog for details of the breaking change in version 4.0
https://github.com/ai/nanoid/issues/365
I am trying to annotate my variables with types but when running the code it simply gives off an error:
let foo: number = 23;
console.log( foo );
// let foo: number = 23;
^
// SyntaxError: Unexpected token ':'
// [90m at Object.compileFunction (node:vm:352:18)[39m
// [90m at wrapSafe (node:internal/modules/cjs/loader:1031:15)[39m
// [90m at Module._compile (node:internal/modules/cjs/loader:1065:27)[39m
// [90m at Object.Module._extensions..js (node:internal/modules/cjs/loader:1153:10)[39m
// [90m at Module.load (node:internal/modules/cjs/loader:981:32)[39m
// [90m at Function.Module._load (node:internal/modules/cjs/loader:822:12)[39m
// [90m at Function.executeUserEntryPoint [as runMain] // (node:internal/modules/run_main:79:12)[39m
// [90m at node:internal/main/run_main_module:17:47[39m
You have two options:
First compile it to plain JS with tsc myfile.ts and run the JS file with node myfile.js.
Or npm install ts-node which lets you run TS files like you would run JS files: ts-node myfile.ts
I got the following error when I try to use esprima. Does anybody know how to fix the problem? Thanks.
$ npm install -g esprima
/usr/local/bin/esparse -> /usr/local/lib/node_modules/esprima/bin/esparse.js
/usr/local/bin/esvalidate -> /usr/local/lib/node_modules/esprima/bin/esvalidate.js
+ esprima#4.0.1
updated 1 package in 0.837s
$ cat main.js
#!/usr/bin/env node
// vim: set noexpandtab tabstop=2:
var esprima = require('esprima');
var program = 'const answer = 42';
console.log(esprima.tokenize(program));
console.log(esprima.parseScript(program));
$ node main.js
internal/modules/cjs/loader.js:960
throw err;
^
Error: Cannot find module 'esprima'
Require stack:
- /private/tmp/main.js
at Function.Module._resolveFilename (internal/modules/cjs/loader.js:957:15)
at Function.Module._load (internal/modules/cjs/loader.js:840:27)
at Module.require (internal/modules/cjs/loader.js:1019:19)
at require (internal/modules/cjs/helpers.js:77:18)
at Object.<anonymous> (/private/tmp/main.js:4:15)
at Module._compile (internal/modules/cjs/loader.js:1133:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1153:10)
at Module.load (internal/modules/cjs/loader.js:977:32)
at Function.Module._load (internal/modules/cjs/loader.js:877:14)
at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:74:12) {
code: 'MODULE_NOT_FOUND',
requireStack: [ '/private/tmp/main.js' ]
}
I think you installed esprima module in global node_modules.
If you want to use esprima in main.js which is located at /private/temp/main.js,
you should run npm install esprima in /private/temp/ without -g
EDIT - How to require global modules
Way 1
I assume you're in mac system.
Before you run your main.js, run export NODE_PATH=/usr/local/lib/node_modules in the shell, not node.js program.
Then you could require the global modules by const esprima = require("esprima").
By the way, global modules position could be different in the different system.
Way 2
After you knew your global modules position,
you could require it by const esprima = require("/usr/local/lib/node_modules/esprima")
I installed the requirejs package to optimize the work with paths to files. In general, I do the next steps:
I have an object with paths to file, that have next values:
"app/database": "/home/dmitry/projects/information-platform-api/app/utils/database"
After I initialize the requirejs mapping in app.js (main file):
requirejs.config({
baseUrl: __dirname,
nodeRequire: require,
paths: paths,
map: {
'*': paths
}
});
After, I need to initialize base models, and with help for I called all files from paths object. This looks like:
for (let file in paths) {
requirejs(paths[file]);
}
When I initializing the file, which has the dependency of the above "app/database", I have a message error: Error: Cannot find module 'app/database'.
Maybe, I don't understand "How works the amdefine", but I have opinion, what a requirejs and amdefine don`t link. Do you have any ideas, why it doesn't work?
A part of the file, which need to investigate:
if (typeof define !== 'function') {
var define = require('amdefine')(module);
}
define([
'sequelize',
'app/database',
'model/student'
], (
Sequelize,
sequelize,
Student
) => { });
Result of my investigation:
The amdefine doesn't know about requirejs mapping.
Full error message:
Error: Tried loading "/home/dmitry/projects/information-platform-api/app/code/IndividualScheduling/model/entity/Company" at /home/dmitry/projects/information-platform-api/app/code/IndividualScheduling/model/entity/Company then tried node's require("/home/dmitry/projects/information-platform-api/app/code/IndividualScheduling/model/entity/Company") and it failed with error: Error: Cannot find module 'app/database'
Require stack:
- /home/dmitry/projects/information-platform-api/app/code/IndividualScheduling/model/entity/Company.js
- /home/dmitry/projects/information-platform-api/app.js
- /home/dmitry/projects/information-platform-api/bin/www
at /home/dmitry/projects/information-platform-api/node_modules/requirejs/bin/r.js:2600:27
at Object.execCb (/home/dmitry/projects/information-platform-api/node_modules/requirejs/bin/r.js:1946:33)
at Module.check (/home/dmitry/projects/information-platform-api/node_modules/requirejs/bin/r.js:1133:51)
at Module.enable (/home/dmitry/projects/information-platform-api/node_modules/requirejs/bin/r.js:1426:22)
at Object.enable (/home/dmitry/projects/information-platform-api/node_modules/requirejs/bin/r.js:1807:39)
at Function.req.get (/home/dmitry/projects/information-platform-api/node_modules/requirejs/bin/r.js:2524:33)
at Object.localRequire [as require] (/home/dmitry/projects/information-platform-api/node_modules/requirejs/bin/r.js:1678:40)
at requirejs (/home/dmitry/projects/information-platform-api/node_modules/requirejs/bin/r.js:2047:24)
at Object.<anonymous> (/home/dmitry/projects/information-platform-api/app.js:142:5)
at Module._compile (internal/modules/cjs/loader.js:1156:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1176:10)
at Module.load (internal/modules/cjs/loader.js:1000:32)
at Function.Module._load (internal/modules/cjs/loader.js:899:14)
at Module.require (internal/modules/cjs/loader.js:1042:19)
at require (internal/modules/cjs/helpers.js:77:18)
at Object.<anonymous> (/home/dmitry/projects/information-platform-api/bin/www:7:13)
at Module._compile (internal/modules/cjs/loader.js:1156:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1176:10)
at Module.load (internal/modules/cjs/loader.js:1000:32)
at Function.Module._load (internal/modules/cjs/loader.js:899:14)
at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:74:12)
at internal/main/run_main_module.js:18:47 {
originalError: Error: Cannot find module 'app/database'
Require stack:
- /home/dmitry/projects/information-platform-api/app/code/IndividualScheduling/model/entity/Company.js
- /home/dmitry/projects/information-platform-api/app.js
- /home/dmitry/projects/information-platform-api/bin/www
at Function.Module._resolveFilename (internal/modules/cjs/loader.js:980:15)
at Function.Module._load (internal/modules/cjs/loader.js:862:27)
at Module.require (internal/modules/cjs/loader.js:1042:19)
at req (/home/dmitry/projects/information-platform-api/node_modules/amdefine/amdefine.js:144:31)
at stringRequire (/home/dmitry/projects/information-platform-api/node_modules/amdefine/amdefine.js:220:28)
at amdRequire (/home/dmitry/projects/information-platform-api/node_modules/amdefine/amdefine.js:113:24)
at /home/dmitry/projects/information-platform-api/node_modules/amdefine/amdefine.js:177:24
at Array.map (<anonymous>)
at runFactory (/home/dmitry/projects/information-platform-api/node_modules/amdefine/amdefine.js:176:25)
at define (/home/dmitry/projects/information-platform-api/node_modules/amdefine/amdefine.js:277:13)
at Object.<anonymous> (/home/dmitry/projects/information-platform-api/app/code/IndividualScheduling/model/entity/Company.js:5:1)
at Module._compile (internal/modules/cjs/loader.js:1156:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1176:10)
at Module.load (internal/modules/cjs/loader.js:1000:32)
at Function.Module._load (internal/modules/cjs/loader.js:899:14)
at Module.require (internal/modules/cjs/loader.js:1042:19)
at require (internal/modules/cjs/helpers.js:77:18)
at /home/dmitry/projects/information-platform-api/node_modules/requirejs/bin/r.js:2598:75
at Object.execCb (/home/dmitry/projects/information-platform-api/node_modules/requirejs/bin/r.js:1946:33)
at Module.check (/home/dmitry/projects/information-platform-api/node_modules/requirejs/bin/r.js:1133:51)
at Module.enable (/home/dmitry/projects/information-platform-api/node_modules/requirejs/bin/r.js:1426:22)
at Object.enable (/home/dmitry/projects/information-platform-api/node_modules/requirejs/bin/r.js:1807:39) {
code: 'MODULE_NOT_FOUND',
requireStack: [
'/home/dmitry/projects/information-platform-api/app/code/IndividualScheduling/model/entity/Company.js',
'/home/dmitry/projects/information-platform-api/app.js',
'/home/dmitry/projects/information-platform-api/bin/www'
]
},
moduleName: '/home/dmitry/projects/information-platform-api/app/code/IndividualScheduling/model/entity/Company',
requireModules: [
'/home/dmitry/projects/information-platform-api/app/code/IndividualScheduling/model/entity/Company'
]
}
Process finished with exit code 1
The solution is here guys. The amdefine have two params, first param it's a global variable module, and the second it's require function for calling the local files. By default, it was just require not requirejs which contains custom mapping.
if (typeof define !== 'function') {
var define = require('amdefine')(module, require('requirejs'));
}
I have installed Node JS version 12, cloned node-oracle db from github.
I have also set OCI_LIB_DIR Path as mentioned in this article.
module.exports = {
user : process.env.NODE_ORACLEDB_USER || "hr",
// Get the password from the environment variable
// NODE_ORACLEDB_PASSWORD. The password could also be a hard coded
// string (not recommended), or it could be prompted for.
// Alternatively use External Authentication so that no password is
// needed.
password : process.env.NODE_ORACLEDB_PASSWORD || abcd,
// For information on connection strings see:
// https://oracle.github.io/node-oracledb/doc/api.html#connectionstrings
connectString : process.env.NODE_ORACLEDB_CONNECTIONSTRING || "jdbc:oracle:thin:#localhost:1521/orcl",
// Setting externalAuth is optional. It defaults to false. See:
// https://oracle.github.io/node-oracledb/doc/api.html#extauth
externalAuth : process.env.NODE_ORACLEDB_EXTERNALAUTH ? true : false
};
I have created a basic connection in SQL developer, would it help.
I have installed npm in node-oracledb and also set the username, but when I try to run the command "npm test" , It gives me the error
Deeksha ~/Desktop/nodewithoracle/node-oracledb (master)
$ npm test
> oracledb#4.1.0 test C:\Users\Deeksha\Desktop\nodewithoracle\node-oracledb
> mocha --opts test/opts/mocha.opts
C:\Users\Deeksha\Desktop\nodewithoracle\node-oracledb\node_modules\yargs\yargs.js:1163
else throw err
^
Error: Schema User name is not Set! Try Set Environment Variable NODE_ORACLEDB_USER.
at Object.<anonymous> (C:\Users\Deeksha\Desktop\nodewithoracle\node-oracledb\test\dbconfig.js:48:9)
at Module._compile (internal/modules/cjs/loader.js:959:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:995:10)
at Module.load (internal/modules/cjs/loader.js:815:32)
at Function.Module._load (internal/modules/cjs/loader.js:727:14)
at Module.require (internal/modules/cjs/loader.js:852:19)
at require (internal/modules/cjs/helpers.js:74:18)
at Object.<anonymous> (C:\Users\850044533\Desktop\nodewithoracle\node-oracledb\test\notes.js:32:18)
at Module._compile (internal/modules/cjs/loader.js:959:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:995:10)
at Module.load (internal/modules/cjs/loader.js:815:32)
at Function.Module._load (internal/modules/cjs/loader.js:727:14)
at Module.require (internal/modules/cjs/loader.js:852:19)
at require (internal/modules/cjs/helpers.js:74:18)
at C:\Users\Deeksha\Desktop\nodewithoracle\node-oracledb\node_modules\mocha\lib\mocha.js:330:36
at Array.forEach (<anonymous>)
at Mocha.loadFiles (C:\Users\Deeksha\Desktop\nodewithoracle\node-oracledb\node_modules\mocha\lib\mocha.js:327:14)
at Mocha.run (C:\Users\Deeksha\Desktop\nodewithoracle\node-oracledb\node_modules\mocha\lib\mocha.js:804:10)
at Object.exports.singleRun (C:\Users\Deeksha\Desktop\nodewithoracle\node-oracledb\node_modules\mocha\lib\cli\run-helpers.js:207:16)
at exports.runMocha (C:\Users\Deeksha\Desktop\nodewithoracle\node-oracledb\node_modules\mocha\lib\cli\run-helpers.js:300:13)
at Object.exports.handler (C:\Users\Deeksha\Desktop\nodewithoracle\node-oracledb\node_modules\mocha\lib\cli\run.js:296:3)
at Object.runCommand (C:\Users\Deeksha\Desktop\nodewithoracle\node-oracledb\node_modules\yargs\lib\command.js:242:26)
at Object.parseArgs [as _parseArgs] (C:\Users\Deeksha\Desktop\nodewithoracle\node-oracledb\node_modules\yargs\yargs.js:1087:28)
at Object.parse (C:\Users\Deeksha\Desktop\nodewithoracle\node-oracledb\node_modules\yargs\yargs.js:566:25)
at Object.exports.main (C:\Users\Deeksha\Desktop\nodewithoracle\node-oracledb\node_modules\mocha\lib\cli\cli.js:63:6)
at Object.<anonymous> (C:\Users\Deeksha\Desktop\nodewithoracle\node-oracledb\node_modules\mocha\bin\_mocha:10:23)
at Module._compile (internal/modules/cjs/loader.js:959:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:995:10)
at Module.load (internal/modules/cjs/loader.js:815:32)
at Function.Module._load (internal/modules/cjs/loader.js:727:14)
at Function.Module.runMain (internal/modules/cjs/loader.js:1047:10)
at internal/main/run_main_module.js:17:11
npm ERR! Test failed. See above for more details.
set the credential environment variables to your DB credential values before you start Node.js. The error message says NODE_ORACLEDB_USER is not set.
Alternatively you can set the values directly in your getConnection() calls:
connection = await oracledb.getConnection({ user: 'hr', password: 'welcome', connectString: 'localhost/orcl' });
But be careful of hard coding passwords.
Use a valid connection string; a JDBC connection string is not usable (Node.js is not JDBC). See the node-oracledb doc JDBC and Oracle SQL Developer Connection Strings for how to determine what to use. Based on what you posted, you should use just localhost:1521/orcl.
Save yourself some time, and read the node-oracledb installation manual, the documentation, and the examples.