15 lines
733 B
JavaScript
15 lines
733 B
JavaScript
const checkStringStartsWith = (token) => (key) => typeof key === "string" && key.startsWith(token);
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const isCSSVariableName =
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/*@__PURE__*/ checkStringStartsWith("--");
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const startsAsVariableToken =
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/*@__PURE__*/ checkStringStartsWith("var(--");
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const isCSSVariableToken = (value) => {
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const startsWithToken = startsAsVariableToken(value);
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if (!startsWithToken)
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return false;
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// Ensure any comments are stripped from the value as this can harm performance of the regex.
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return singleCssVariableRegex.test(value.split("/*")[0].trim());
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};
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const singleCssVariableRegex = /var\(--(?:[\w-]+\s*|[\w-]+\s*,(?:\s*[^)(\s]|\s*\((?:[^)(]|\([^)(]*\))*\))+\s*)\)$/iu;
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export { isCSSVariableName, isCSSVariableToken };
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