102 lines
2.3 KiB
JavaScript
102 lines
2.3 KiB
JavaScript
// @ts-nocheck
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'use strict';
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const atRuleParamIndex = require('../../utils/atRuleParamIndex');
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const declarationValueIndex = require('../../utils/declarationValueIndex');
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const getUnitFromValueNode = require('../../utils/getUnitFromValueNode');
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const optionsMatches = require('../../utils/optionsMatches');
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const report = require('../../utils/report');
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const ruleMessages = require('../../utils/ruleMessages');
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const validateOptions = require('../../utils/validateOptions');
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const _ = require('lodash');
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const valueParser = require('postcss-value-parser');
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const ruleName = 'number-max-precision';
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const messages = ruleMessages(ruleName, {
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expected: (number, precision) => `Expected "${number}" to be "${number.toFixed(precision)}"`,
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});
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function rule(precision, options) {
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return (root, result) => {
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const validOptions = validateOptions(
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result,
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ruleName,
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{
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actual: precision,
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possible: [_.isNumber],
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},
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{
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optional: true,
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actual: options,
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possible: {
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ignoreUnits: [_.isString, _.isRegExp],
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},
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},
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);
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if (!validOptions) {
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return;
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}
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root.walkAtRules((atRule) => {
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if (atRule.name.toLowerCase() === 'import') {
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return;
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}
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check(atRule, atRule.params, atRuleParamIndex);
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});
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root.walkDecls((decl) => check(decl, decl.value, declarationValueIndex));
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function check(node, value, getIndex) {
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// Get out quickly if there are no periods
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if (!value.includes('.')) {
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return;
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}
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valueParser(value).walk((valueNode) => {
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const unit = getUnitFromValueNode(valueNode);
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if (optionsMatches(options, 'ignoreUnits', unit)) {
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return;
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}
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// Ignore `url` function
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if (valueNode.type === 'function' && valueNode.value.toLowerCase() === 'url') {
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return false;
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}
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// Ignore strings, comments, etc
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if (valueNode.type !== 'word') {
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return;
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}
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const match = /\d*\.(\d+)/.exec(valueNode.value);
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if (match === null) {
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return;
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}
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if (match[1].length <= precision) {
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return;
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}
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report({
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result,
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ruleName,
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node,
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index: getIndex(node) + valueNode.sourceIndex + match.index,
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message: messages.expected(parseFloat(match[0]), precision),
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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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module.exports = rule;
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