0.15.0 fails to parse bootstrap ("unexpected }") with keyframes = true

[lopopolo]

Before you open an issue, please check if a similar issue already exists or has been closed before.

When reporting a bug, please be sure to include the following:

• A descriptive title

• An isolated way to reproduce the behavior (example: GitHub repository with code isolated to the issue that anyone can clone to observe the problem): https://github.com/lopopolo/hyperbola, using webpack. To exercise the bug, modify keyframes: true in webpack.config.js and run yarn install && make build

• What version of purgecss you're using, and the platform(s) you're running it on: 0.15.0

• The behavior you expect to see, and the actual behavior: actual behavior:

  /Users/lopopolo/dev/repos/hyperbola/node_modules/purgecss/lib/purgecss.js:1
  (function (exports, require, module, __filename, __dirname) { "use strict";function _interopDefault(e){return e&&"object"==typeof e&&"default"in e?e.default:e}function normalizeArray(e,t){for(var r=0,n=e.length-1;n>=0;n--){var i=e[n];"."===i?e.splice(n,1):".."===i?(e.splice(n,1),r++):r&&(e.splice(n,1),r--)}if(t)for(;r--;r)e.unshift("..");return e}function resolve(){for(var e="",t=!1,r=arguments.length-1;r>=-1&&!t;r--){var n=r>=0?arguments[r]:"/";if("string"!=typeof n)throw new TypeError("Arguments to path.resolve must be strings");n&&(e=n+"/"+e,t="/"===n.charAt(0))}return e=normalizeArray(filter(e.split("/"),function(e){return!!e}),!t).join("/"),(t?"/":"")+e||"."}function normalize(e){var t=isAbsolute(e),r="/"===substr(e,-1);return(e=normalizeArray(filter(e.split("/"),function(e){return!!e}),!t).join("/"))||t||(e="."),e&&r&&(e+="/"),(t?"/":"")+e}function isAbsolute(e){return"/"===e.charAt(0)}function join(){return normalize(filter(A
  CssSyntaxError: <css input>:6:71741: Unexpected }
      at Input.error (/Users/lopopolo/dev/repos/hyperbola/node_modules/purgecss/node_modules/postcss/lib/input.js:113:22)
      at Parser.unexpectedClose (/Users/lopopolo/dev/repos/hyperbola/node_modules/purgecss/node_modules/postcss/lib/parser.js:492:26)
       at Parser.end (/Users/lopopolo/dev/repos/hyperbola/node_modules/purgecss/node_modules/postcss/lib/parser.js:353:18)
      at Parser.parse (/Users/lopopolo/dev/repos/hyperbola/node_modules/purgecss/node_modules/postcss/lib/parser.js:68:26)
      at Function.parse (/Users/lopopolo/dev/repos/hyperbola/node_modules/purgecss/node_modules/postcss/lib/parse.js:24:16)
      at e.value (/Users/lopopolo/dev/repos/hyperbola/node_modules/purgecss/lib/purgecss.js:1:90949)
      at e.value (/Users/lopopolo/dev/repos/hyperbola/node_modules/purgecss/lib/purgecss.js:1:88660)
      at e.value (/Users/lopopolo/dev/repos/hyperbola/node_modules/purgecss/lib/purgecss.js:1:88224)
      at /Users/lopopolo/dev/repos/hyperbola/node_modules/purgecss-webpack-plugin/lib/purgecss-webpack-plugin.js:199:83
      at Array.forEach (<anonymous>)
      at /Users/lopopolo/dev/repos/hyperbola/node_modules/purgecss-webpack-plugin/lib/purgecss-webpack-plugin.js:182:27
      at Array.forEach (<anonymous>)
      at Compilation.<anonymous> (/Users/lopopolo/dev/repos/hyperbola/node_modules/purgecss-webpack-plugin/lib/purgecss-webpack-plugin.js:174:30)
      at next (/Users/lopopolo/dev/repos/hyperbola/node_modules/webpack/node_modules/tapable/lib/Tapable.js:204:14)
      at Compilation.<anonymous> (/Users/lopopolo/dev/repos/hyperbola/node_modules/extract-text-webpack-plugin/dist/index.js:275:11)
      at Compilation.applyPluginsAsyncSeries (/Users/lopopolo/dev/repos/hyperbola/node_modules/webpack/node_modules/tapable/lib/Tapable.js:206:13)
      at sealPart2 (/Users/lopopolo/dev/repos/hyperbola/node_modules/webpack/lib/Compilation.js:662:9)
      at next (/Users/lopopolo/dev/repos/hyperbola/node_modules/webpack/node_modules/tapable/lib/Tapable.js:202:11)
      at /Users/lopopolo/dev/repos/hyperbola/node_modules/extract-text-webpack-plugin/dist/index.js:244:13
      at /Users/lopopolo/dev/repos/hyperbola/node_modules/async/dist/async.js:473:16
      at iteratorCallback (/Users/lopopolo/dev/repos/hyperbola/node_modules/async/dist/async.js:1050:13)
      at /Users/lopopolo/dev/repos/hyperbola/node_modules/async/dist/async.js:958:16
      at /Users/lopopolo/dev/repos/hyperbola/node_modules/extract-text-webpack-plugin/dist/index.js:227:15
      at /Users/lopopolo/dev/repos/hyperbola/node_modules/async/dist/async.js:473:16
      at iteratorCallback (/Users/lopopolo/dev/repos/hyperbola/node_modules/async/dist/async.js:1050:13)
      at /Users/lopopolo/dev/repos/hyperbola/node_modules/async/dist/async.js:958:16
      at /Users/lopopolo/dev/repos/hyperbola/node_modules/extract-text-webpack-plugin/dist/index.js:216:21
      at rebuilding.forEach.cb (/Users/lopopolo/dev/repos/hyperbola/node_modules/webpack/lib/Compilation.js:530:29)
      at Array.forEach (<anonymous>)
      at callback (/Users/lopopolo/dev/repos/hyperbola/node_modules/webpack/lib/Compilation.js:530:15)
  make: *** [build] Error 1
  

  Expected behavior: webpack successfully compiles, as it does in 0.14.0

When you open an issue for a feature request, please add as much detail as possible:

• A descriptive title
• A description of the problem you're trying to solve, including why you think this is a problem
• An overview of the suggested solution
• If the feature changes current behavior, reasons why your solution is better

[Ffloriel]

Thank you for reporting this issue.
I will look into it.

[RicLeP]

I have the same issue, it appears to be keyframe rules. Even a very simple stylesheet such as the following causes an issue.

@keyframes test {
	from {
		color: #ffffff;
	}

	to {
		color: #000000;
	}
}

[jsnanigans]

@lopopolo this PR will fix this issue, thanks for reporting it.
#34

[jsnanigans]

fixed in v0.19.0