npm run production error.

 ERROR  Failed to compile with 1 errors

 error  

js/app.js from UglifyJs
SyntaxError: Unexpected token punc «(», expected punc «:» [js/app.js:13477,11]

    Asset    Size  Chunks                    Chunk Names
js/app.js  1.3 MB       0  [emitted]  [big]  app

npm ERR! Linux 4.4.0-59-generic
npm ERR! argv "/usr/bin/nodejs" "/usr/bin/npm" "run" "production"
npm ERR! node v6.9.4
npm ERR! npm  v3.10.10
npm ERR! code ELIFECYCLE
npm ERR! ecampus@1.0.0 production: `cross-env NODE_ENV=production webpack --progress --hide-modules`
npm ERR! Exit status 2
npm ERR! 
npm ERR! Failed at the ecampus@1.0.0 production script 'cross-env NODE_ENV=production webpack --progress --hide-modules'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the ecampus package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR!     cross-env NODE_ENV=production webpack --progress --hide-modules
npm ERR! You can get information on how to open an issue for this project with:
npm ERR!     npm bugs ecampus
npm ERR! Or if that isn't available, you can get their info via:
npm ERR!     npm owner ls ecampus
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR!     /opt/lampp/htdocs/ecampus/npm-debug.log

npm debug log

0 info it worked if it ends with ok 1 verbose cli [ ‘/usr/bin/nodejs’, ‘/usr/bin/npm’, ‘run’, ‘production’ ] 2 info using npm@3.10.10 3 info using node@v6.9.4 4 verbose run-script [ ‘preproduction’, ‘production’, ‘postproduction’ ] 5 info lifecycle ecampus@1.0.0~preproduction: ecampus@1.0.0 6 silly lifecycle ecampus@1.0.0~preproduction: no script for preproduction, continuing 7 info lifecycle ecampus@1.0.0~production: ecampus@1.0.0 8 verbose lifecycle ecampus@1.0.0~production: unsafe-perm in lifecycle true 9 verbose lifecycle ecampus@1.0.0~production: PATH: /usr/lib/node_modules/npm/bin/node-gyp-bin:/opt/lampp/htdocs/ecampus/node_modules/.bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin 10 verbose lifecycle ecampus@1.0.0~production: CWD: /opt/lampp/htdocs/ecampus 11 silly lifecycle ecampus@1.0.0~production: Args: [ ‘-c’, 11 silly lifecycle ‘cross-env NODE_ENV=production webpack --progress --hide-modules’ ] 12 silly lifecycle ecampus@1.0.0~production: Returned: code: 2 signal: null 13 info lifecycle ecampus@1.0.0~production: Failed to exec production script 14 verbose stack Error: ecampus@1.0.0 production: cross-env NODE_ENV=production webpack --progress --hide-modules 14 verbose stack Exit status 2 14 verbose stack at EventEmitter.<anonymous> (/usr/lib/node_modules/npm/lib/utils/lifecycle.js:255:16) 14 verbose stack at emitTwo (events.js:106:13) 14 verbose stack at EventEmitter.emit (events.js:191:7) 14 verbose stack at ChildProcess.<anonymous> (/usr/lib/node_modules/npm/lib/utils/spawn.js:40:14) 14 verbose stack at emitTwo (events.js:106:13) 14 verbose stack at ChildProcess.emit (events.js:191:7) 14 verbose stack at maybeClose (internal/child_process.js:877:16) 14 verbose stack at Process.ChildProcess._handle.onexit (internal/child_process.js:226:5) 15 verbose pkgid ecampus@1.0.0 16 verbose cwd /opt/lampp/htdocs/ecampus 17 error Linux 4.4.0-59-generic 18 error argv “/usr/bin/nodejs” “/usr/bin/npm” “run” “production” 19 error node v6.9.4 20 error npm v3.10.10 21 error code ELIFECYCLE 22 error ecampus@1.0.0 production: cross-env NODE_ENV=production webpack --progress --hide-modules 22 error Exit status 2 23 error Failed at the ecampus@1.0.0 production script ‘cross-env NODE_ENV=production webpack --progress --hide-modules’. 23 error Make sure you have the latest version of node.js and npm installed. 23 error If you do, this is most likely a problem with the ecampus package, 23 error not with npm itself. 23 error Tell the author that this fails on your system: 23 error cross-env NODE_ENV=production webpack --progress --hide-modules 23 error You can get information on how to open an issue for this project with: 23 error npm bugs ecampus 23 error Or if that isn’t available, you can get their info via: 23 error npm owner ls ecampus 23 error There is likely additional logging output above. 24 verbose exit [ 1, true ]

[jericopulvera]

I fixed it by installing the latest babel preset https://babeljs.io/docs/plugins/preset-latest/

[ruchernchong]

@iraklisg You should have upgraded before commenting. This issue was closed since January this year. It’s been a while and there were many updates to laravel-mix.