notes/node_modules/stylelint/lib/rules/at-rule-name-space-after/index.js

"use strict"

const atRuleNameSpaceChecker = require("../atRuleNameSpaceChecker")
const ruleMessages = require("../../utils/ruleMessages")
const validateOptions = require("../../utils/validateOptions")
const whitespaceChecker = require("../../utils/whitespaceChecker")

const ruleName = "at-rule-name-space-after"

const messages = ruleMessages(ruleName, {
  expectedAfter: name => `Expected single space after at-rule name \"${name}\"`,
})

const rule = function (expectation) {
  const checker = whitespaceChecker("space", expectation, messages)
  return (root, result) => {
    const validOptions = validateOptions(result, ruleName, {
      actual: expectation,
      possible: [
        "always",
        "always-single-line",
      ],
    })
    if (!validOptions) {
      return
    }

    atRuleNameSpaceChecker({
      root,
      result,
      locationChecker: checker.after,
      checkedRuleName: ruleName,
    })
  }
}

rule.ruleName = ruleName
rule.messages = messages
module.exports = rule