All walk functions registered with registerWalker do not work

[nuintun]

• Node Version: 9.8.0
• NPM Version: 5.6.0
• postcss-values-parser Version: 1.4.0

This issue is regarding a problem with:

• Standard CSS
• LESS
• SCSS
• SASS

All walk functions (eg: walkFunctionNodes, walkComments) registered with registerWalker do not work.

[shellscape]

False

[nuintun]

@shellscape Try this

const source = '/*1*/ 5px /* 2 */';
const ast = new Parser(source).parse();

ast.first.walkComments(node => {
  console.log(node.value);
});

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