73 lines
1.9 KiB
JavaScript
73 lines
1.9 KiB
JavaScript
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'use strict';
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const valueParser = require('postcss-value-parser');
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const declarationValueIndex = require('../../utils/declarationValueIndex');
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const report = require('../../utils/report');
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const ruleMessages = require('../../utils/ruleMessages');
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const { isValueFunction } = require('../../utils/typeGuards');
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const validateOptions = require('../../utils/validateOptions');
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const ruleName = 'no-unknown-custom-properties';
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const messages = ruleMessages(ruleName, {
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rejected: (propName) => `Unexpected unknown custom property "${propName}"`,
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});
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const meta = {
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url: 'https://stylelint.io/user-guide/rules/no-unknown-custom-properties',
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};
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/** @type {import('stylelint').Rule} */
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const rule = (primary) => {
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return (root, result) => {
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const validOptions = validateOptions(result, ruleName, { actual: primary });
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if (!validOptions) return;
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/** @type {Set<string>} */
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const declaredCustomProps = new Set();
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root.walkAtRules(/^property$/i, ({ params }) => {
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declaredCustomProps.add(params);
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});
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root.walkDecls(/^--/, ({ prop }) => {
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declaredCustomProps.add(prop);
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});
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root.walkDecls((decl) => {
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const { value } = decl;
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const parsedValue = valueParser(value);
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parsedValue.walk((node) => {
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if (!isValueFunction(node) || node.value !== 'var') return;
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const [firstNode, secondNode] = node.nodes;
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if (!firstNode || declaredCustomProps.has(firstNode.value)) return;
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// Second node (div) indicates fallback exists in all cases
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if (secondNode && secondNode.type === 'div') return;
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const startIndex = declarationValueIndex(decl);
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report({
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result,
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ruleName,
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message: messages.rejected,
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messageArgs: [firstNode.value],
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node: decl,
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index: startIndex + firstNode.sourceIndex,
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endIndex: startIndex + firstNode.sourceEndIndex,
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});
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});
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});
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};
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};
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rule.ruleName = ruleName;
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rule.messages = messages;
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rule.meta = meta;
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module.exports = rule;
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