github-pages-deploy-action/node_modules/eslint-plugin-github/lib/rules/unescaped-html-literal.js

module.exports = function(context) {
  const htmlOpenTag = /^<[a-zA-Z]/
  const message = 'Unescaped HTML literal. Use html`` tag template literal for secure escaping.'

  return {
    Literal(node) {
      if (!htmlOpenTag.test(node.value)) return

      context.report({
        node,
        message
      })
    },
    TemplateLiteral(node) {
      if (!htmlOpenTag.test(node.quasis[0].value.raw)) return

      if (!node.parent.tag || node.parent.tag.name !== 'html') {
        context.report({
          node,
          message
        })
      }
    }
  }
}