fix: place format next to an appropriate type (#202)

src/__fixtures__/formats-schema.json

@@ -18,8 +18,19 @@
       "type": "number",
       "format": "float"
     },
+    "count": {
+      "type": ["integer", "null"],
+      "format": "int32"
+    },
+    "size": {
+      "type": [
+        "number",
+        "string"
+      ],
+      "format": "byte"
+    },
     "notype": {
-        "format": "date-time"
+      "format": "date-time"
     },
     "permissions": {
       "type": [

src/components/SchemaRow/SchemaRow.tsx

@@ -15,15 +15,7 @@ import * as React from 'react';
 import { COMBINER_NAME_MAP } from '../../consts';
 import { useJSVOptionsContext } from '../../contexts';
 import { calculateChildrenToShow, isFlattenableNode, isPropertyRequired } from '../../tree';
-import {
-  Caret,
-  Description,
-  Format,
-  getInternalSchemaError,
-  getValidationsFromSchema,
-  Types,
-  Validations,
-} from '../shared';
+import { Caret, Description, getInternalSchemaError, getValidationsFromSchema, Types, Validations } from '../shared';
 import { ChildStack } from '../shared/ChildStack';
 import { Properties, useHasProperties } from '../shared/Properties';
 import { hoveredNodeAtom, isNodeHoveredAtom } from './state';
@@ -108,12 +100,7 @@ export const SchemaRow: React.FunctionComponent<SchemaRowProps> = React.memo(({
                 </Box>
               )}
 
-              {choices.length === 1 && (
-                <>
-                  <Types schemaNode={typeToShow} />
-                  <Format schemaNode={typeToShow} />
-                </>
-              )}
+              {choices.length === 1 && <Types schemaNode={typeToShow} />}
 
               {onGoToRef && isReferenceNode(schemaNode) && schemaNode.external ? (
                 <Box

src/components/shared/Format.tsx

@@ -1,15 +1,10 @@
-import { isRegularNode, SchemaNode } from '@stoplight/json-schema-tree';
 import { Box } from '@stoplight/mosaic';
 import * as React from 'react';
 
 type FormatProps = {
-  schemaNode: SchemaNode;
+  format: string;
 };
 
-export const Format: React.FunctionComponent<FormatProps> = ({ schemaNode }) => {
-  if (!isRegularNode(schemaNode) || schemaNode.format === null) {
-    return null;
-  }
-
-  return <Box as="span" color="muted">{`<${schemaNode.format}>`}</Box>;
+export const Format: React.FunctionComponent<FormatProps> = ({ format }) => {
+  return <Box as="span" color="muted">{`<${format}>`}</Box>;
 };

src/components/shared/Types.tsx

@@ -9,7 +9,10 @@ import {
 import { Box } from '@stoplight/mosaic';
 import * as React from 'react';
 
+import { COMMON_JSON_SCHEMA_AND_OAS_FORMATS } from '../../consts';
+import { isPrimitiveArray } from '../../tree';
 import { printName } from '../../utils';
+import { Format } from './Format';
 
 function shouldRenderName(type: SchemaNodeKind | SchemaCombinerName | '$ref'): boolean {
   return type === SchemaNodeKind.Array || type === SchemaNodeKind.Object || type === '$ref';
@@ -29,6 +32,32 @@ function getTypes(schemaNode: RegularNode): Array<SchemaNodeKind | SchemaCombine
   );
 }
 
+function getFormats(schemaNode: RegularNode): Partial<Record<SchemaNodeKind, string>> {
+  const formats: Partial<Record<SchemaNodeKind, string>> = {};
+
+  if (isPrimitiveArray(schemaNode) && schemaNode.children[0].format !== null) {
+    formats.array = schemaNode.children[0].format;
+  }
+
+  if (schemaNode.format === null) {
+    return formats;
+  }
+
+  const types = getTypes(schemaNode);
+
+  for (const type of types) {
+    if (!(type in COMMON_JSON_SCHEMA_AND_OAS_FORMATS)) continue;
+
+    if (COMMON_JSON_SCHEMA_AND_OAS_FORMATS[type].includes(schemaNode.format)) {
+      formats[type] = schemaNode.format;
+      return formats;
+    }
+  }
+
+  formats.string = schemaNode.format;
+  return formats;
+}
+
 export const Types: React.FunctionComponent<{ schemaNode: SchemaNode }> = ({ schemaNode }) => {
   if (isReferenceNode(schemaNode)) {
     return (
@@ -43,14 +72,20 @@ export const Types: React.FunctionComponent<{ schemaNode: SchemaNode }> = ({ sch
   }
 
   const types = getTypes(schemaNode);
+  const formats = getFormats(schemaNode);
 
-  if (types.length === 0) return null;
+  if (types.length === 0) {
+    return formats.string !== void 0 ? <Format format={formats.string} /> : null;
+  }
 
   const rendered = types.map((type, i, { length }) => (
     <React.Fragment key={type}>
       <Box as="span" textOverflow="truncate" color="muted">
         {shouldRenderName(type) ? printName(schemaNode) ?? type : type}
       </Box>
+
+      {type in formats ? <Format format={formats[type]} /> : null}
+
       {i < length - 1 && (
         <Box as="span" key={`${i}-sep`} color="muted">
           {' or '}

src/components/shared/__tests__/Format.spec.tsx

@@ -5,7 +5,7 @@ import { JSONSchema4 } from 'json-schema';
 import * as React from 'react';
 
 import { SchemaRow } from '../../SchemaRow';
-import { Format } from '../Format';
+import { Types } from '../Types';
 import { buildTree, findNodeWithPath } from './utils';
 
 describe('Format component', () => {
@@ -14,23 +14,28 @@ describe('Format component', () => {
 
   it('should render next to a single type', () => {
     const wrapper = mount(<SchemaRow schemaNode={findNodeWithPath(tree, ['properties', 'id'])!} nestingLevel={0} />);
-    expect(wrapper.find(Format)).toHaveText('<float>');
+    expect(wrapper.find(Types)).toHaveText('number<float>');
     wrapper.unmount();
   });
 
-  it('should render next to an array of types', () => {
+  it.each`
+    property           | text
+    ${'count'}         | ${'integer<int32> or null'}
+    ${'date-of-birth'} | ${'number or string<date-time> or array'}
+    ${'size'}          | ${'number<byte> or string'}
+  `('given $property property, should render next to the appropriate type', ({ property, text }) => {
     const wrapper = mount(
-      <SchemaRow schemaNode={findNodeWithPath(tree, ['properties', 'date-of-birth'])!} nestingLevel={0} />,
+      <SchemaRow schemaNode={findNodeWithPath(tree, ['properties', property])!} nestingLevel={0} />,
     );
-    expect(wrapper.find(Format)).toHaveText('<date-time>');
+    expect(wrapper.find(Types)).toHaveText(text);
     wrapper.unmount();
   });
 
   it('should render even when the type(s) is/are missing', () => {
     const wrapper = mount(
       <SchemaRow schemaNode={findNodeWithPath(tree, ['properties', 'notype'])!} nestingLevel={0} />,
     );
-    expect(wrapper.find(Format)).toHaveText('<date-time>');
+    expect(wrapper.find(Types)).toHaveText('<date-time>');
     wrapper.unmount();
   });
 });

src/consts.ts

@@ -8,6 +8,14 @@ export const COMBINER_PRETTY_NAMES: Readonly<Dictionary<string, SchemaCombinerNa
   [SchemaCombinerName.OneOf]: 'or',
 };
 
+export const COMMON_JSON_SCHEMA_AND_OAS_FORMATS = {
+  // strings are omitted because they are the default type to apply format to
+  number: ['byte', 'int32', 'int64', 'float', 'double'],
+  get integer() {
+    return this.number;
+  },
+};
+
 export const NESTING_OFFSET: SpaceVals = 3;
 
 export const CARET_ICON_SIZE = 'sm';