eslint-plugin-ember/lib/utils/scope-references-this.js

ESLint plugin for Ember.js apps

'use strict';

const estraverse = require('estraverse');

/**
 * Determines whether this AST node uses the `this` of the surrounding context.
 *
 * @param {ASTNode} node
 * @returns {boolean}
 */
function scopeReferencesThis(node) {
  let result = false;

  estraverse.traverse(node, {
    enter(node) {
      switch (node.type) {
        case 'FunctionDeclaration':
        case 'FunctionExpression': {
          this.skip();
          break;
        }

        case 'ThisExpression': {
          result = true;
          this.break();
          break;
        }

        default: {
          // Ignored.
          break;
        }
      }
    },
    fallback: 'iteration',
  });

  return result;
}

module.exports = scopeReferencesThis;