message: Use getBinding instead of getBindingAssert
diff: @@ -27,11 +27,12 @@ export default {
  const {node, scope} = path;
  if (
  - ((node.type === 'AssignmentIdentifier' && isAssignment(path)) ||
  + (node.type === 'AssignmentIdentifier' && isAssignment(path)) ||
  (node.type === 'ReferenceIdentifier' &&
  - path.parentPath.node.type === 'UpdateExpression')) &&
  - scope.getBindingAssert(node.name).kind === 'import'
  + path.parentPath.node.type === 'UpdateExpression')
  ) {
  + let binding = scope.getBinding(node.name);
  + if (binding !== undefined && binding.kind === 'import')
  path.context.addNodeDiagnostic(node, {
  category: 'lint/noImportAssign',
  message: markup`<emphasis>${node.name}</emphasis> is read-only`,
  