drupal/core/config/schema/core.entity.schema.yml

# Schema for Configuration files of the entity module.

core.entity_view_mode.*.*:
  type: config_entity
  label: 'Entity view mode settings'
  mapping:
    id:
      type: string
      label: 'ID'
    label:
      type: label
      label: 'The human-readable name of the view mode'
    targetEntityType:
      type: string
      label: 'Target entity type'
    cache:
      type: boolean
      label: 'Cached'

core.entity_form_mode.*.*:
  type: config_entity
  label: 'Entity form mode settings'
  mapping:
    id:
      type: string
      label: 'ID'
    label:
      type: label
      label: 'Label'
    targetEntityType:
      type: string
      label: 'Target entity type'
    cache:
      type: boolean
      label: 'Cache'

# Overview configuration information for view mode or form mode displays.
core.entity_view_display.*.*.*:
  type: config_entity
  label: 'Entity display'
  mapping:
    id:
      type: string
      label: 'ID'
    targetEntityType:
      type: string
      label: 'Target entity type'
    bundle:
      type: string
      label: 'Bundle'
    mode:
      type: string
      label: 'View or form mode machine name'
    content:
      type: sequence
      label: 'Field formatters'
      sequence:
        - type: mapping
          label: 'Field formatter'
          mapping:
            type:
              type: string
              label: 'Format type machine name'
            weight:
              type: integer
              label: 'Weight'
            label:
               type: string
               label: 'Label setting machine name'
            settings:
              type: field.formatter.settings.[%parent.type]
              label: 'Settings'
            third_party_settings:
               type: sequence
               label: 'Third party settings'
               sequence:
                 - type: field.formatter.third_party.[%key]
    hidden:
      type: sequence
      label: 'Field display setting'
      sequence:
        - type: boolean
          label: 'Value'

# Overview configuration information for form mode displays.
core.entity_form_display.*.*.*:
  type: config_entity
  label: 'Entity form display'
  mapping:
    id:
      type: string
      label: 'ID'
    targetEntityType:
      type: string
      label: 'Target entity type'
    bundle:
      type: string
      label: 'Bundle'
    mode:
      type: string
      label: 'View or form mode machine name'
    status:
      type: boolean
      label: 'Enabled'
    content:
      type: sequence
      label: 'Field widgets'
      sequence:
        - type: mapping
          label: 'Field widget'
          mapping:
            type:
              type: string
              label: 'Widget type machine name'
            weight:
              type: integer
              label: 'Weight'
            settings:
              type: field.widget.settings.[%parent.type]
              label: 'Settings'
            third_party_settings:
              type: sequence
              label: 'Third party settings'
              sequence:
                - type: field.widget.third_party.[%key]
    hidden:
      type: sequence
      label: 'Hidden'
      sequence:
        - type: boolean
          label: 'Component'

# Default schema for entity display field with undefined type.
field.formatter.settings.*:
  type: mapping

# Default schema for entity form display field with undefined type.
field.widget.settings.*:
  type: mapping

field.widget.settings.string_textfield:
  type: mapping
  label: 'Text field display format settings'
  mapping:
    size:
      type: integer
      label: 'Size of textfield'
    placeholder:
      type: label
      label: 'Placeholder'

field.widget.settings.string_textarea:
  type: mapping
  label: 'Textarea display format settings'
  mapping:
    rows:
      type: integer
      label: 'Rows'
    placeholder:
      type: label
      label: 'Placeholder'

field.widget.settings.email_default:
  type: mapping
  label: 'Email field display format settings'
  mapping:
    placeholder:
      type: label
      label: 'Placeholder'

field.widget.settings.datetime_timestamp:
  type: mapping
  label: 'Datetime timestamp display format settings'

field.widget.settings.boolean_checkbox:
  type: mapping
  label: 'Boolean checkbox display format settings'
  mapping:
    display_label:
      type: boolean
      label: 'Display label'

field.widget.settings.hidden:
  type: mapping
  label: '- Hidden - format settings'

field.widget.settings.number:
  type: mapping
  label: 'Number default display format settings'
  mapping:
    placeholder:
      type: label
      label: 'Placeholder'

field.widget.settings.checkbox:
  type: mapping
  label: 'Single on/off checkbox format settings'
  mapping:
    display_label:
      type: boolean
      label: 'Use field label instead of the "On value" as label'

field.widget.settings.entity_reference_autocomplete_tags:
  type: mapping
  label: 'Entity reference autocomplete (Tags style) display format settings'
  mapping:
    match_operator:
      type: string
      label: 'Autocomplete matching'
    size:
      type: integer
      label: 'Size of textfield'
    placeholder:
      type: label
      label: 'Placeholder'

field.widget.settings.entity_reference_autocomplete:
  type: mapping
  label: 'Entity reference autocomplete display format settings'
  mapping:
    match_operator:
      type: string
      label: 'Autocomplete matching'
    size:
      type: integer
      label: 'Size of textfield'
    placeholder:
      type: label
      label: 'Placeholder'

field.formatter.settings.boolean:
  type: mapping
  mapping:
    format:
      type: string
      label: 'Output format'
    format_custom_false:
      type: string
      label: 'Custom output for FALSE'
    format_custom_true:
      type: string
      label: 'Custom output for TRUE'

field.formatter.settings.string:
  type: mapping
  mapping:
    link_to_entity:
      type: boolean
      label: 'Link to the entity'

field.formatter.settings.number_decimal:
  type: mapping
  label: 'Number decimal display format settings'
  mapping:
    thousand_separator:
      type: string
      label: 'Thousand marker'
    decimal_separator:
      type: string
      label: 'Decimal marker'
    scale:
      type: integer
      label: 'Scale'
    prefix_suffix:
      type: boolean
      label: 'Display prefix and suffix.'

field.formatter.settings.number_integer:
  type: mapping
  label: 'Number integer display format settings'
  mapping:
    thousand_separator:
      type: string
      label: 'Thousand marker'
    prefix_suffix:
      type: boolean
      label: 'Display prefix and suffix.'

field.formatter.settings.number_unformatted:
  type: mapping
  label: 'Number unformatted display format settings'

field.formatter.settings.uri_link:
  type: mapping
  label: 'URI as link display format settings'

field.formatter.settings.timestamp_ago:
  type: mapping
  label: 'Timestamp ago display format settings'

field.formatter.settings.entity_reference_entity_view:
  type: mapping
  label: 'Entity reference rendered entity display format settings'
  mapping:
    view_mode:
      type: string
      label: 'View mode'
    link:
      type: boolean
      label: 'Show links'

field.formatter.settings.entity_reference_entity_id:
  type: mapping
  label: 'Entity reference entity ID display format settings'

field.formatter.settings.entity_reference_label:
  type: mapping
  label: 'Entity reference label display format settings'
  mapping:
    link:
      type: boolean
      label: 'Link label to the referenced entity'