"Invalid CSS after" at `sl-str-compare` tests

[ncoden]

I got the following error when running tests:

> mocha test/index.js

/Users/ncoden/Documents/Documents/Projects/Programmation/Web/Forks/sassy-lists/node_modules/node-sass/lib/index.js:439
  throw assign(new Error(), JSON.parse(result.error));
  ^

Error: Invalid CSS after "..., $__ORDER__ ):": expected ")", was "true,"
    at Object.module.exports.renderSync (/Users/ncoden/Documents/Documents/Projects/Programmation/Web/Forks/sassy-lists/node_modules/node-sass/lib/index.js:439:16)
    at Object.module.exports.runSass (/Users/ncoden/Documents/Documents/Projects/Programmation/Web/Forks/sassy-lists/node_modules/sass-true/lib/main.js:34:18)
    at Object.<anonymous> (/Users/ncoden/Documents/Documents/Projects/Programmation/Web/Forks/sassy-lists/test/index.js:5:10)
    at Module._compile (module.js:635:30)
    at Object.Module._extensions..js (module.js:646:10)
    at Module.load (module.js:554:32)
    at tryModuleLoad (module.js:497:12)
    at Function.Module._load (module.js:489:3)
    at Module.require (module.js:579:17)
    at require (internal/module.js:11:18)
    at /Users/ncoden/Documents/Documents/Projects/Programmation/Web/Forks/sassy-lists/node_modules/mocha/lib/mocha.js:220:27
    at Array.forEach (<anonymous>)
    at Mocha.loadFiles (/Users/ncoden/Documents/Documents/Projects/Programmation/Web/Forks/sassy-lists/node_modules/mocha/lib/mocha.js:217:14)
    at Mocha.run (/Users/ncoden/Documents/Documents/Projects/Programmation/Web/Forks/sassy-lists/node_modules/mocha/lib/mocha.js:469:10)
    at Object.<anonymous> (/Users/ncoden/Documents/Documents/Projects/Programmation/Web/Forks/sassy-lists/node_modules/mocha/bin/_mocha:404:18)
    at Module._compile (module.js:635:30)
    at Object.Module._extensions..js (module.js:646:10)
    at Module.load (module.js:554:32)
    at tryModuleLoad (module.js:497:12)
    at Function.Module._load (module.js:489:3)
    at Function.Module.runMain (module.js:676:10)
    at startup (bootstrap_node.js:187:16)
    at bootstrap_node.js:608:3

Error seems to come from the tests on the sl-str-compare function. Something is going wrong and the test variables are exported as pure CSS.

• node: v8.9.1
• node-sass: v4.9.0
• libsass: v3.5.4