Unexpected Token when running the tool

[ScottAcceptto]

I ran 'crx2ff analyse app.zip'

After skipping some DS_store files I got this error in the terminal:

/usr/local/lib/node_modules/crx2ff/node_modules/esprima/esprima.js:5702
throw e;
^
Error: Line 93: Unexpected token
at constructError (/usr/local/lib/node_modules/crx2ff/node_modules/esprima/esprima.js:2407:21)
at createError (/usr/local/lib/node_modules/crx2ff/node_modules/esprima/esprima.js:2426:17)
at unexpectedTokenError (/usr/local/lib/node_modules/crx2ff/node_modules/esprima/esprima.js:2500:13)
at tolerateUnexpectedToken (/usr/local/lib/node_modules/crx2ff/node_modules/esprima/esprima.js:2509:21)
at parseStatementListItem (/usr/local/lib/node_modules/crx2ff/node_modules/esprima/esprima.js:3968:21)
at parseScriptBody (/usr/local/lib/node_modules/crx2ff/node_modules/esprima/esprima.js:5490:25)
at parseProgram (/usr/local/lib/node_modules/crx2ff/node_modules/esprima/esprima.js:5506:16)
at Object.parse (/usr/local/lib/node_modules/crx2ff/node_modules/esprima/esprima.js:5690:23)
at processFile (/usr/local/lib/node_modules/crx2ff/libs/expr-finder.js:26:24)
at processScript (/usr/local/lib/node_modules/crx2ff/libs/ext-checker.js:57:23)