Crimp is unable to parse 'const' variable (or other ES2015 or later) declarations

[basperheim]

I'm not allowed to use const variable declarations for some reason:

Unexpected 'const' at 283:1 after ';' at 1:13

[metatoaster]

The const keyword was never introduced in the ES5 specification as it is first introduced in the specification ECMAScript 2015 Edition (ES6). Since the underlying calmjs.parse library has no support for ES6 and above as of now and crimp was only provided as a helper replacement for slimit (which also don't have ES2015 (ES6) support), this would be an open issue until ES2015 (ES6) support is added. ES2015 support is tracked via calmjs/calmjs.parse#15.