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node_modules/eslint-plugin-promise/rules/no-nesting.js 626 Bytes
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  /**
   * Rule: no-nesting
   * Avoid nesting your promises.
   */
  
  'use strict'
  
  const getDocsUrl = require('./lib/get-docs-url')
  const hasPromiseCallback = require('./lib/has-promise-callback')
  const isInsidePromise = require('./lib/is-inside-promise')
  
  module.exports = {
    meta: {
      docs: {
        url: getDocsUrl('no-nesting')
      }
    },
    create: function(context) {
      return {
        CallExpression: function(node) {
          if (!hasPromiseCallback(node)) return
          if (context.getAncestors().some(isInsidePromise)) {
            context.report({ node, message: 'Avoid nesting promises.' })
          }
        }
      }
    }
  }