babel-plugin-transform-react-stateless-component-name/lib/helper/isDisplayNameSet.js

A babel plugin to add name for default exported stateless components.

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});


var isDisplayNameSet = function isDisplayNameSet(statement, displayName) {
  var displayNameSetInExpr = function displayNameSetInExpr(sibling) {
    var expression = sibling.get('expression');
    var member = sibling.get('expression.left');

    return !!(expression.isAssignmentExpression() && member.get('object').isIdentifier({ name: displayName }) && member.get('property').isIdentifier({ name: 'displayName' }));
  };

  for (var i = statement.container.length; i > -1; i -= 1) {
    var sibling = statement.getSibling(i);

    if (sibling.isExpressionStatement() && displayNameSetInExpr(sibling)) {
      return true;
    }
  }

  return false;
};

exports.default = isDisplayNameSet;