45 lines
1.2 KiB
JavaScript
45 lines
1.2 KiB
JavaScript
'use strict';
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/** @typedef {import('postcss-value-parser').Node} ValueNode */
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/**
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* @param {ValueNode | undefined} valueNode
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* @returns {boolean}
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*/
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module.exports = function (valueNode) {
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if (!valueNode) {
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return false;
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}
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if (valueNode.type !== 'function' || !valueNode.nodes || valueNode.value) {
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return false;
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}
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// It's necessary to remove comments and spaces if they are present
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const cleanNodes = valueNode.nodes.filter(
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(node) => node.type !== 'comment' && node.type !== 'space',
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);
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// Map without comments and spaces will have the structure like $map (prop: value, prop2: value)
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// ↑ ↑ ↑ ↑
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// 0 1 2 3
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if (cleanNodes[0] && cleanNodes[0].type !== 'word' && cleanNodes[0].type !== 'string') {
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return false;
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}
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if (cleanNodes[1] && cleanNodes[1].value !== ':') {
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return false;
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}
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// There is no need to check type or value of this node since it could be anything
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if (!cleanNodes[2]) {
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return false;
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}
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if (cleanNodes[3] && cleanNodes[3].value !== ',') {
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return false;
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}
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return true;
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};
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