Fix import statement requiring a space afterwards

[FlyingDR]

Twig.js v1.12.0 is failed to properly parse import statement in a case if there is no space between import keyword and filename. Example test file:

{% include"test.twig" %}

(notice no space after include) gives me:

Error compiling twig template index.twig:
TwigException: Unable to parse 'include"test.twig"'

node_modules/map-stream/index.js:103
        throw err
        ^
TypeError: Cannot read property 'length' of undefined
    at Object.e.async.forEach (node_modules/twig/twig.js:1:8309)
    at e.Template.e.parse (node_modules/twig/twig.js:1:77630)
    at e.Template.e.parseAsync (node_modules/twig/twig.js:1:5510)
    at e.Template.<anonymous> (node_modules/twig/twig.js:1:81286)
    at node_modules/twig/twig.js:1:5951
    at Object.e.async.potentiallyAsync (node_modules/twig/twig.js:1:6181)
    at e.Template.render (node_modules/twig/twig.js:1:81231)
    at modifyContents (node_modules/gulp-twig/index.js:90:49)
    at wrappedMapper (node_modules/map-stream/index.js:84:19)
    at Stream.stream.write (node_modules/map-stream/index.js:96:21)

if test file get changed by adding space after import:

{% include "test.twig" %}

it get parsed successfully.

[ericmorand]

I was sure it would at least throw a syntax error with TwigPHP but it actually works perfectly:

https://twigfiddle.com/v1f4cm

[FlyingDR]

Yes, I forgot to mention a fact that PHP Twig parses this properly, sorry

[willrowe]

Example of it not working in twig.js: https://codepen.io/willrowe/pen/VwXMgeo