Failed to load the jupyter-notebook package

/Users/federica/.atom/packages/jupyter-notebook/lib/main.js: Unexpected token (36:4)
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SyntaxError: /Users/federica/.atom/packages/jupyter-notebook/lib/main.js: Unexpected token (36:4)
return el;
}
});
},
deactivate() {
at Parser.pp.raise (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babylon/lib/parser/location.js:24:13)
at Parser.pp.unexpected (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babylon/lib/parser/util.js:82:8)
at Parser.pp.expect (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babylon/lib/parser/util.js:76:33)
at Parser.pp.parseExprList (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babylon/lib/parser/expression.js:785:12)
at Parser.pp.parseSubscripts (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babylon/lib/parser/expression.js:270:29)
at Parser.pp.parseExprSubscripts (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babylon/lib/parser/expression.js:240:17)
at Parser.pp.parseMaybeUnary (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babylon/lib/parser/expression.js:217:19)
at Parser.pp.parseExprOps (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babylon/lib/parser/expression.js:163:19)
at Parser.pp.parseMaybeConditional (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babylon/lib/parser/expression.js:145:19)
at Parser.pp.parseMaybeAssign (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babylon/lib/parser/expression.js:112:19)
at Parser.pp.parseExpression (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babylon/lib/parser/expression.js:79:19)
at Parser.pp.parseStatement (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babylon/lib/parser/statement.js:137:23)
at Parser.parseStatement (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babylon/lib/plugins/flow.js:655:22)
at Parser.pp.parseBlock (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babylon/lib/parser/statement.js:442:21)
at Parser.pp.parseFunctionBody (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babylon/lib/parser/expression.js:747:22)
at Parser.parseFunctionBody (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babylon/lib/plugins/flow.js:643:20)
at Parser.pp.parseMethod (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babylon/lib/parser/expression.js:717:8)
at Parser.pp.parseObjPropValue (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babylon/lib/parser/expression.js:658:23)
at Parser.parseObjPropValue (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babylon/lib/plugins/flow.js:891:13)
at Parser.pp.parseObj (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babylon/lib/parser/expression.js:640:10)
at Parser.pp.parseExprAtom (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babylon/lib/parser/expression.js:392:19)
at Parser.parseExprAtom (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babylon/lib/plugins/jsx/index.js:412:22)
at Parser.pp.parseExprSubscripts (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babylon/lib/parser/expression.js:236:19)
at Parser.pp.parseMaybeUnary (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babylon/lib/parser/expression.js:217:19)
at Parser.pp.parseExprOps (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babylon/lib/parser/expression.js:163:19)
at Parser.pp.parseMaybeConditional (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babylon/lib/parser/expression.js:145:19)
at Parser.pp.parseMaybeAssign (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babylon/lib/parser/expression.js:112:19)
at Parser.pp.parseExport (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babylon/lib/parser/statement.js:682:21)
at Parser.parseExport (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babylon/lib/plugins/flow.js:713:20)
at Parser.pp.parseStatement (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babylon/lib/parser/statement.js:115:90)
at Parser.parseStatement (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babylon/lib/plugins/flow.js:655:22)
at Parser.pp.parseTopLevel (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babylon/lib/parser/statement.js:30:21)
at Parser.parse (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babylon/lib/parser/index.js:70:17)
at Object.parse (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babylon/lib/index.js:45:50)
at Object.exports.default (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babel-core/lib/helpers/parse.js:36:18)
at File.parse (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babel-core/lib/transformation/file/index.js:574:40)
at File.parseCode (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babel-core/lib/transformation/file/index.js:691:20)
at /Applications/Atom.app/Contents/Resources/app.asar/node_modules/babel-core/lib/transformation/pipeline.js:167:12
at File.wrap (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babel-core/lib/transformation/file/index.js:639:16)
at Pipeline.transform (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/babel-core/lib/transformation/pipeline.js:165:17)
at Object.e.compile (/Applications/Atom.app/Contents/Resources/app/static/:11:577655)
at Object.compile (/Applications/Atom.app/Contents/Resources/app/static/:11:574454)
at compileFileAtPath (/Applications/Atom.app/Contents/Resources/app/static/:11:148545)
at Object.value [as .js] (/Applications/Atom.app/Contents/Resources/app/static/:11:150943)
at Module.load (internal/modules/cjs/loader.js:602:32)
at tryModuleLoad (internal/modules/cjs/loader.js:541:12)
at Function.Module._load (internal/modules/cjs/loader.js:533:3)
at Module.require (file:///Applications/Atom.app/Contents/Resources/app.asar/static/index.js:72:46)
at require (internal/modules/cjs/helpers.js:20:18)
at customRequire (/Applications/Atom.app/Contents/Resources/app/static/:1:695134)
at Package.requireMainModule (/Applications/Atom.app/Contents/Resources/app/static/:11:3197086)
at measure (/Applications/Atom.app/Contents/Resources/app/static/:11:3183626)
at Package.measure (/Applications/Atom.app/Contents/Resources/app/static/:11:3182458)
at Package.load (/Applications/Atom.app/Contents/Resources/app/static/:11:3183199)
at PackageManager.loadAvailablePackage (/Applications/Atom.app/Contents/Resources/app/static/:11:381274)
at PackageManager.loadPackage (/Applications/Atom.app/Contents/Resources/app/static/:11:380002)
at PackageManager.activatePackage (/Applications/Atom.app/Contents/Resources/app/static/:11:382574)
at /Applications/Atom.app/Contents/Resources/app/static/:11:943557
at r (/Applications/Atom.app/Contents/Resources/app/static/:11:938163)
at o (/Applications/Atom.app/Contents/Resources/app/static/:14:1122261)
at ChildProcess.n.process.on.e (/Applications/Atom.app/Contents/Resources/app/static/:14:1122467)
at ChildProcess.emit (events.js:182:13)
at Process.ChildProcess._handle.onexit (internal/child_process.js:240:12)### ###

Read lib/main.js around line 36 and reproduce loading the jupyter-notebook package in Atom using the reported syntax error. Done means the package loads without the Unexpected token failure shown in the issue.

Written by the indexing model from the issue text.