notes/node_modules/stylelint/lib/rules/declarationColonSpaceChecker.js

"use strict"

const declarationValueIndex = require("../utils/declarationValueIndex")
const isStandardSyntaxDeclaration = require("../utils/isStandardSyntaxDeclaration")
const report = require("../utils/report")

module.exports = function (opts) {
  opts.root.walkDecls(decl => {
    if (!isStandardSyntaxDeclaration(decl)) {
      return
    }

    // Get the raw prop, and only the prop
    const endOfPropIndex = declarationValueIndex(decl) + (decl.raws.between || "").length - 1

    // The extra characters tacked onto the end ensure that there is a character to check
    // after the colon. Otherwise, with `background:pink` the character after the
    const propPlusColon = decl.toString().slice(0, endOfPropIndex) + "xxx"

    for (let i = 0, l = propPlusColon.length; i < l; i++) {
      if (propPlusColon[i] !== ":") {
        continue
      }
      opts.locationChecker({
        source: propPlusColon,
        index: i,
        lineCheckStr: decl.value,
        err: m => {
          report({
            message: m,
            node: decl,
            index: decl.prop.toString().length + 1,
            result: opts.result,
            ruleName: opts.checkedRuleName,
          })
        },
      })
      break
    }
  })
}