"use strict"; Object.defineProperty(exports, "__esModule", { value: true }); Object.defineProperty(exports, // Arbitrary values must contain balanced brackets (), [] and {}. Escaped // values don't count, and brackets inside quotes also don't count. // // E.g.: w-[this-is]w-[weird-and-invalid] // E.g.: w-[this-is\\]w-\\[weird-but-valid] // E.g.: content-['this-is-also-valid]-weirdly-enough'] "default", { enumerable: true, get: function() { return isSyntacticallyValidPropertyValue; } }); let matchingBrackets = new Map([ [ "{", "}" ], [ "[", "]" ], [ "(", ")" ] ]); let inverseMatchingBrackets = new Map(Array.from(matchingBrackets.entries()).map(([k, v])=>[ v, k ])); let quotes = new Set([ '"', "'", "`" ]); function isSyntacticallyValidPropertyValue(value) { let stack = []; let inQuotes = false; for(let i = 0; i < value.length; i++){ let char = value[i]; if (char === ":" && !inQuotes && stack.length === 0) { return false; } // Non-escaped quotes allow us to "allow" anything in between if (quotes.has(char) && value[i - 1] !== "\\") { inQuotes = !inQuotes; } if (inQuotes) continue; if (value[i - 1] === "\\") continue; // Escaped if (matchingBrackets.has(char)) { stack.push(char); } else if (inverseMatchingBrackets.has(char)) { let inverse = inverseMatchingBrackets.get(char); // Nothing to pop from, therefore it is unbalanced if (stack.length <= 0) { return false; } // Popped value must match the inverse value, otherwise it is unbalanced if (stack.pop() !== inverse) { return false; } } } // If there is still something on the stack, it is also unbalanced if (stack.length > 0) { return false; } // All good, totally balanced! return true; }