Separate type parameters name and default value

Author: LinusU

inputfiles/overridingTypes.json

@@ -224,7 +224,10 @@
                     }
                 },
                 "type-parameters": [
-                    "T = any"
+                    {
+                        "name": "T",
+                        "default": "any"
+                    }
                 ],
                 "constructor": {
                     "override-signatures": [
@@ -1224,7 +1227,10 @@
                     }
                 },
                 "type-parameters": [
-                    "T = any"
+                    {
+                        "name": "T",
+                        "default": "any"
+                    }
                 ]
             },
             "IDBTransaction": {
@@ -2338,7 +2344,10 @@
                     }
                 },
                 "type-parameters": [
-                    "T = any"
+                    {
+                        "name": "T",
+                        "default": "any"
+                    }
                 ]
             },
             "AesGcmParams": {

src/emitter.ts

@@ -347,7 +347,7 @@ export function emitWebIDl(webidl: Browser.WebIdl, flavor: Flavor) {
         if (!typeParameters) return i.name;
         if (!typeParameters.length) return i.name;
 
-        return `${i.name}<${typeParameters.map(t => t.replace(/\s+=.*$/, ''))}>`;
+        return `${i.name}<${typeParameters.map(t => t.name)}>`;
     }
 
     function emitConstant(c: Browser.Constant) {
@@ -371,7 +371,11 @@ export function emitWebIDl(webidl: Browser.WebIdl, flavor: Flavor) {
     }
 
     function processInterfaceType(i: Browser.Interface | Browser.Dictionary, name: string) {
-        return i["type-parameters"] ? name + "<" + i["type-parameters"]!.join(", ") + ">" : name;
+        function typeParameterWithDefault (type: Browser.TypeParameter) {
+            return type.default ? type.name + " = " + type.default : type.name
+        }
+
+        return i["type-parameters"] ? name + "<" + i["type-parameters"]!.map(typeParameterWithDefault).join(", ") + ">" : name;
     }
 
     /// Emit overloads for the createElement method

src/types.d.ts

@@ -138,6 +138,11 @@ export interface Element {
     specs?: string;
 }
 
+export interface TypeParameter {
+    name: string;
+    default?: string;
+}
+
 export interface Interface {
     name: string;
     extends: string;
@@ -173,7 +178,7 @@ export interface Interface {
     "primary-global"?: string;
     "no-interface-object"?: 1;
     global?: string;
-    "type-parameters"?: string[];
+    "type-parameters"?: TypeParameter[];
     "override-index-signatures"?: string[];
     specs?: string;
     iterable?: "value" | "pair" | "pair-iterator";
@@ -207,7 +212,7 @@ export interface Dictionary {
         member: Record<string, Member>;
     }
     specs?: string;
-    "type-parameters"?: string[];
+    "type-parameters"?: TypeParameter[];
 }
 
 export interface WebIdl {