3 const atRuleParamIndex = require("../../utils/atRuleParamIndex");
4 const declarationValueIndex = require("../../utils/declarationValueIndex");
5 const getUnitFromValueNode = require("../../utils/getUnitFromValueNode");
6 const optionsMatches = require("../../utils/optionsMatches");
7 const report = require("../../utils/report");
8 const ruleMessages = require("../../utils/ruleMessages");
9 const validateOptions = require("../../utils/validateOptions");
11 const _ = require("lodash");
12 const valueParser = require("postcss-value-parser");
14 const ruleName = "number-max-precision";
16 const messages = ruleMessages(ruleName, {
17 expected: (number, precision) =>
18 `Expected "${number}" to be "${number.toFixed(precision)}"`
21 const rule = function(precision, options) {
22 return (root, result) => {
23 const validOptions = validateOptions(
28 possible: [_.isNumber]
34 ignoreUnits: [_.isString]
42 root.walkAtRules(atRule => {
43 if (atRule.name.toLowerCase() === "import") {
47 check(atRule, atRule.params, atRuleParamIndex);
50 root.walkDecls(decl => check(decl, decl.value, declarationValueIndex));
52 function check(node, value, getIndex) {
53 // Get out quickly if there are no periods
54 if (value.indexOf(".") === -1) {
58 valueParser(value).walk(valueNode => {
59 const unit = getUnitFromValueNode(valueNode);
61 if (optionsMatches(options, "ignoreUnits", unit)) {
65 // Ignore `url` function
67 valueNode.type === "function" &&
68 valueNode.value.toLowerCase() === "url"
73 // Ignore strings, comments, etc
74 if (valueNode.type !== "word") {
78 const match = /\d*\.(\d+)/.exec(valueNode.value);
84 if (match[1].length <= precision) {
92 index: getIndex(node) + valueNode.sourceIndex + match.index,
93 message: messages.expected(parseFloat(match[0]), precision)
100 rule.ruleName = ruleName;
101 rule.messages = messages;
102 module.exports = rule;