Vue Cli3 initialization fails "unexpected identifier"

[jappyjan]

vue & vue-i18n version

Vue: ^2.5.17
i18n: latest

Steps to reproduce

execute "vue add i18n" on a vue project

What is Expected?

i18n should install, fire the plugin generator and finished installation afterwards.

What is actually happening?

i18n installs fine,
launches the plugin generator which also works fine until you hit enter after selecting
an option for "Enable locale messages in Single file components". Afterwards an Error is thrown

ERROR Error: Line 17: Unexpected identifier Error: Line 17: Unexpected identifier at ErrorHandler.constructError (C:\Users\janja\AppData\Roaming\npm\node_modules\@vue\cli\node_modules\esprima\dist\esprima. js:5012:22) at ErrorHandler.createError (C:\Users\janja\AppData\Roaming\npm\node_modules\@vue\cli\node_modules\esprima\dist\esprima.js: 5028:27) at Parser.unexpectedTokenError (C:\Users\janja\AppData\Roaming\npm\node_modules\@vue\cli\node_modules\esprima\dist\esprima. js:1985:39) at Parser.throwUnexpectedToken (C:\Users\janja\AppData\Roaming\npm\node_modules\@vue\cli\node_modules\esprima\dist\esprima. js:1995:21) at Parser.expect (C:\Users\janja\AppData\Roaming\npm\node_modules\@vue\cli\node_modules\esprima\dist\esprima.js:2168:19) at Parser.parseGroupExpression (C:\Users\janja\AppData\Roaming\npm\node_modules\@vue\cli\node_modules\esprima\dist\esprima. js:2764:27) at Parser.inheritCoverGrammar (C:\Users\janja\AppData\Roaming\npm\node_modules\@vue\cli\node_modules\esprima\dist\esprima.j s:2285:37) at Parser.parsePrimaryExpression (C:\Users\janja\AppData\Roaming\npm\node_modules\@vue\cli\node_modules\esprima\dist\esprim a.js:2348:38) at Parser.inheritCoverGrammar (C:\Users\janja\AppData\Roaming\npm\node_modules\@vue\cli\node_modules\esprima\dist\esprima.j s:2285:37) at Parser.parseLeftHandSideExpressionAllowCall (C:\Users\janja\AppData\Roaming\npm\node_modules\@vue\cli\node_modules\espri ma\dist\esprima.js:2899:26)

[kazupon]

related #19