shell bypass 403
'use strict';
const blurInterpolation = require('./blurInterpolation');
const isStandardSyntaxValue = require('./isStandardSyntaxValue');
const valueParser = require('postcss-value-parser');
/**
* Get unit from value node
*
* Returns `null` if the unit is not found.
*
* @param {import('postcss-value-parser').Node} node
*
* @returns {string | null}
*/
module.exports = function (node) {
if (!node || !node.value) {
return null;
}
// Ignore non-word nodes
if (node.type !== 'word') {
return null;
}
// Ignore non standard syntax
if (!isStandardSyntaxValue(node.value)) {
return null;
}
// Ignore HEX
if (node.value.startsWith('#')) {
return null;
}
// Remove non standard stuff
const value = blurInterpolation(node.value, '')
// ignore hack unit
.replace('\\0', '')
.replace('\\9', '');
const parsedUnit = valueParser.unit(value);
if (!parsedUnit) {
return null;
}
return parsedUnit.unit;
};