npm bin return me "/usr/local/bin/X: 1: /usr/local/bin/X: Syntax error: "(" unexpected" when calling it - node.js

Question

So i'm just trying to create an npm bin who create a file in the current directory.
// ./index.js
const program = require('commander');
const fs = require('fs');
const path = require('path');
program
.command('c <name> <content>')
.action((name, content) => {
fs.writeFile(path.resolve(process.cwd(), name), content, err => err ? console.error(err) : console.log('Success'));
});
program.parse(process.argv);
This is not because of fs, even if i replace the writeFile by a console.log i still have to same error.
Here's my package.json :
{
"name": "test-crayzzit",
"dependencies": {
"commander": "^2.19.0"
},
"bin": {
"testcc": "./index.js"
},
"version": "1.0.3"
}
Everything's work well if i do something like node index.js test.txt hello
But if i install the package with npm : sudo npm i -g test-crayzzit
And do testcc c test.txt hello
It return me an error : /usr/local/bin/testcc: 1: /usr/local/bin/testcc: Syntax error: "(" unexpected
You can try by your self with the package : https://www.npmjs.com/package/test-crayzzit

Answer 1

Looks like you're missing the shebang. The first line of index.js should read as follows:
#!/usr/bin/env node
Moreover, the file should have LFline endings to be read properly on MacOS, Linux and Windows if you care about using the package on different platforms.
EDIT: I have tested your package (same error for me on Linux). Adding the shebang as described above works for me.
See also: Appropriate hashbang for Node.js scripts