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fix: guard against undefined value in CSS variable resolution #604

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fix: guard against undefined value in CSS variable resolution #604

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5 changes: 5 additions & 0 deletions lib/variables.js
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,11 @@ const uniqueString = (string) => {
*/
const replaceVariables = (el,value) => {

// Guard against undefined or non-string values
if (typeof value !== 'string') {
return value || '';
}

// find non-nested css function calls
// eg: rgb(...), drop-shadow(...)
let funcReg = /([a-z\-]+)\s*\(\s*([^\(\)]*?)\s*(?:,\s*([^\(\)]*?)\s*)?\s*\)/i;
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