Simplify optional tokens to improve maintainability

Don't list all possible alterations manually.

#1467 (comment)

Author: yanndinendal

baselines/dom.generated.d.ts

@@ -27926,8 +27926,8 @@ declare function addEventListener(type: string, listener: EventListenerOrEventLi
 declare function removeEventListener<K extends keyof WindowEventMap>(type: K, listener: (this: Window, ev: WindowEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
 declare function removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
 type AlgorithmIdentifier = Algorithm | string;
-type AutoFill = AutoFillBase | AutoFillField | `${AutoFillSection} ${AutoFillField}` | `${AutoFillAddressKind} ${AutoFillField}` | `${AutoFillSection} ${AutoFillAddressKind} ${AutoFillField}` | `${AutoFillSection} ${AutoFillAddressKind} ${AutoFillField} ${AutoFillCredentialField}` | `${AutoFillAddressKind} ${AutoFillField} ${AutoFillCredentialField}` | `${AutoFillSection} ${AutoFillField} ${AutoFillCredentialField}` | `${AutoFillField} ${AutoFillCredentialField}`;
-type AutoFillField = AutoFillNormalField | AutoFillContactField | `${AutoFillContactKind} ${AutoFillContactField}`;
+type AutoFill = AutoFillBase | `${OptionalPrefixToken<AutoFillSection>}${OptionalPrefixToken<AutoFillAddressKind>}${AutoFillField}${OptionalPostfixToken<AutoFillCredentialField>}`;
+type AutoFillField = AutoFillNormalField | `${OptionalPrefixToken<AutoFillContactKind>}${AutoFillContactField}`;
 type AutoFillSection = `section-${string}`;
 type BigInteger = Uint8Array;
 type BinaryData = ArrayBuffer | ArrayBufferView;
@@ -27979,6 +27979,8 @@ type NamedCurve = string;
 type OffscreenRenderingContext = OffscreenCanvasRenderingContext2D | ImageBitmapRenderingContext | WebGLRenderingContext | WebGL2RenderingContext;
 type OnBeforeUnloadEventHandler = OnBeforeUnloadEventHandlerNonNull | null;
 type OnErrorEventHandler = OnErrorEventHandlerNonNull | null;
+type OptionalPostfixToken<T extends string> = ` ${T}` | "";
+type OptionalPrefixToken<T extends string> = `${T} ` | "";
 type PerformanceEntryList = PerformanceEntry[];
 type ReadableStreamController<T> = ReadableStreamDefaultController<T> | ReadableByteStreamController;
 type ReadableStreamReadResult<T> = ReadableStreamReadValueResult<T> | ReadableStreamReadDoneResult<T>;

inputfiles/addedTypes.jsonc

@@ -1512,20 +1512,38 @@
                 "name": "EventListenerOrEventListenerObject",
                 "overrideType": "EventListener | EventListenerObject"
             },
+            {
+                "name": "OptionalPrefixToken",
+                "typeParameters": [
+                    {
+                        "name": "T extends string"
+                    }
+                ],
+                "overrideType": "`${T} ` | \"\""
+            },
+            {
+                "name": "OptionalPostfixToken",
+                "typeParameters": [
+                    {
+                        "name": "T extends string"
+                    }
+                ],
+                "overrideType": "` ${T}` | \"\""
+            },
             {
                 "name": "AutoFillSection",
                 "overrideType": "`section-${string}`"
             },
             {
                 "name": "AutoFillField",
-                "overrideType": "AutoFillNormalField | AutoFillContactField | `${AutoFillContactKind} ${AutoFillContactField}`"
+                "overrideType": "AutoFillNormalField | `${OptionalPrefixToken<AutoFillContactKind>}${AutoFillContactField}`"
             },
             {
                 // See the full list of possible autofill values for the `autocomplete` attribute:
                 // https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#determine-a-field's-category
                 // Full spec at https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#autofill.
                 "name": "AutoFill",
-                "overrideType": "AutoFillBase | AutoFillField | `${AutoFillSection} ${AutoFillField}` | `${AutoFillAddressKind} ${AutoFillField}` | `${AutoFillSection} ${AutoFillAddressKind} ${AutoFillField}` | `${AutoFillSection} ${AutoFillAddressKind} ${AutoFillField} ${AutoFillCredentialField}` | `${AutoFillAddressKind} ${AutoFillField} ${AutoFillCredentialField}` | `${AutoFillSection} ${AutoFillField} ${AutoFillCredentialField}` | `${AutoFillField} ${AutoFillCredentialField}`"
+                "overrideType": "AutoFillBase | `${OptionalPrefixToken<AutoFillSection>}${OptionalPrefixToken<AutoFillAddressKind>}${AutoFillField}${OptionalPostfixToken<AutoFillCredentialField>}`"
             }
         ]
     }

inputfiles/knownTypes.json

@@ -38,6 +38,8 @@
         "Keyframe",
         "MutationRecordType",
         "NamedCurve",
+        "OptionalPrefixToken",
+        "OptionalPostfixToken",
         "Pbkdf2Params",
         "PropertyIndexedKeyframes",
         "RsaHashedImportParams",