When deploying my Rails app I get the following error:
rake aborted!
ExecJS::ProgramError: Unexpected token punc «(», expected punc «:» (line: 15, col: 14, pos: 265)
Error
at new JS_Parse_Error (/tmp/execjs20150524-4411-1p45n63js:2359:10623)
at js_error (/tmp/execjs20150524-4411-1p45n63js:2359:10842)
at croak (/tmp/execjs20150524-4411-1p45n63js:2359:19086)
at token_error (/tmp/execjs20150524-4411-1p45n63js:2359:19223)
at expect_token (/tmp/execjs20150524-4411-1p45n63js:2359:19446)
at expect (/tmp/execjs20150524-4411-1p45n63js:2359:19584)
at /tmp/execjs20150524-4411-1p45n63js:2359:28513
at /tmp/execjs20150524-4411-1p45n63js:2359:19957
at expr_atom (/tmp/execjs20150524-4411-1p45n63js:2359:27269)
at maybe_unary (/tmp/execjs20150524-4411-1p45n63js:2359:30019)new JS_Parse_Error ((execjs):2359:10623)
js_error ((execjs):2359:10842)
croak ((execjs):2359:19086)
token_error ((execjs):2359:19223)
expect_token ((execjs):2359:19446)
expect ((execjs):2359:19584)
(execjs):2359:28513
(execjs):2359:19957
expr_atom ((execjs):2359:27269)
maybe_unary ((execjs):2359:30019)
The file in question is valid, it works on localhost. I also tried running rake assests:precompile on localhost, it all passes. Finally, I tried to remove the content from the file, git push and redeploy - still got the same error. Only completely removing the file and re-deploying helps.
Would appreciate any ideas.
Here I found help for the same problem you had.
Run rails console and:
JS_PATH = "app/assets/javascripts/**/*.js";
Dir[JS_PATH].each do |file_name|
puts "\n#{file_name}"
puts Uglifier.compile(File.read(file_name), harmony: true)
end
It will show you the file and the line where the Uglifier is making the problem.
I suspect, in that js file, you have something like the following:
var User = {
getName() {
alert("my name");
}
}
Replacing it with the right format,
var User = {
getName: function() {
alert("my name");
}
}
worked for me.
Error is clearly saying, it's expecting ":" but it found "(".
Just encounter the same issue.
My case is someone used syntax that's only support since ES2015, ex
function someThing(param = true) {
// do something here
};
while this is not supported in our environment.
And the error messages is actually generated by Uglifer.