drupal 8 custom fieldtype that doesnt require editing a node code example

Example 1: field_type: text_with_summary

comment
datetime
file
image
link
list_string
list_float
list_integer
path
text_with_summary
text
text_long
email
boolean
created
changed
timestamp
string_long
language
decimal
uri
float
password
string
integer
entity_reference
uuid
map
taxonomy_term_reference

Example 2: field_type: text_with_summary

langcode: en
status: true
dependencies:
  config:
    - block_content.type.basic
    - field.storage.block_content.body
  module:
    - text
id: block_content.basic.body
field_name: body
entity_type: block_content
bundle: basic
label: Body
description: ''
required: false
translatable: true
default_value: {  }
default_value_callback: ''
settings:
  display_summary: false
field_type: text_with_summary