Cryptic error when loading a module with babel

[jcollum]

$ cat ./src/storage.js 

export const sqrt = Math.sqrt;
export function square(x) {
    return x * x;
}
export function diag(x, y) {
    return sqrt(square(x) + square(y));
}

OK this is a pretty basic object. I'll try to import it:

~/projects/StarsApp @ Magni (jcollum) 
$ nesh -b
Babel 5.8.38 on Node v7.8.0
Type .help for more information
babel> import './src/storage';
TypeError: Cannot read property 'error' of undefined
    at OptionManager.mergeOptions (/Users/jcollum/.nvm/versions/node/v7.8.0/lib/node_modules/nesh/node_modules/babel-core/lib/transformation/file/options/option-manager.js:126:28)
    at OptionManager.addConfig (/Users/jcollum/.nvm/versions/node/v7.8.0/lib/node_modules/nesh/node_modules/babel-core/lib/transformation/file/options/option-manager.js:107:10)
    at OptionManager.findConfigs (/Users/jcollum/.nvm/versions/node/v7.8.0/lib/node_modules/nesh/node_modules/babel-core/lib/transformation/file/options/option-manager.js:168:35)
    at OptionManager.init (/Users/jcollum/.nvm/versions/node/v7.8.0/lib/node_modules/nesh/node_modules/babel-core/lib/transformation/file/options/option-manager.js:229:12)
    at compile (/Users/jcollum/.nvm/versions/node/v7.8.0/lib/node_modules/nesh/node_modules/babel-core/lib/api/register/node.js:117:22)
    at normalLoader (/Users/jcollum/.nvm/versions/node/v7.8.0/lib/node_modules/nesh/node_modules/babel-core/lib/api/register/node.js:199:14)
    at Object.require.extensions.(anonymous function) [as .js] (/Users/jcollum/.nvm/versions/node/v7.8.0/lib/node_modules/nesh/node_modules/babel-core/lib/api/register/node.js:216:7)
    at Module.load (module.js:488:32)
    at tryModuleLoad (module.js:447:12)
    at Function.Module._load (module.js:439:3)

Key line:

TypeError: Cannot read property 'error' of undefined at OptionManager.mergeOptions (/Users/jcollum/.nvm/versions/node/v7.8.0/lib/node_modules/nesh/node_modules/babel-core/lib/transformation/file/options/option-manager.js:126:28)

I'm not sure what I'm doing wrong. The error isn't much help.

[jcollum]

The issue was that I had a .babelrc file in the directory (not entirely sure where it came from, I don't think react-native needs it). I renamed it and nesh -b started working.

Props to http://www.guyellisrocks.com/2015/11/babel-cannot-read-property-error-of.html

[jcollum]

Ooops looks like babel is used:

  "devDependencies": {
    "babel-jest": "19.0.0",
    "babel-preset-react-native": "1.9.1",
    "jest": "19.0.2",
    "react-test-renderer": "16.0.0-alpha.6"
  },

Nesh uses babel 5.8, when will it be upgraded to 6? That might solve this issue.

$ nesh -b
Babel 5.8.38 on Node v7.9.0

[jcollum]

Hey I just ran into this one again, any update?