diff --git a/packages/generator-typescript/templates/gobject-2.0.d.ts b/packages/generator-typescript/templates/gobject-2.0.d.ts
index 2a82aca7..df22ff21 100644
--- a/packages/generator-typescript/templates/gobject-2.0.d.ts
+++ b/packages/generator-typescript/templates/gobject-2.0.d.ts
@@ -1,4 +1,4 @@
-// A few things here are inspired by gi.ts 
+// A few things here are inspired by gi.ts
 // See https://gitlab.gnome.org/ewlsh/gi.ts/-/blob/master/packages/lib/src/generators/dts/gobject.ts
 // Copyright Evan Welsh
 
@@ -6,7 +6,7 @@
 export type GType<T = unknown> = {
     __type__(arg: never): T
     name: string
-};
+}
 
 // Extra interfaces used to help define GObject classes in js; these
 // aren't part of gi.
@@ -27,17 +27,18 @@ export interface MetaInfo<Props, Interfaces, Sigs> {
     Template?: Uint8Array | GLib.Bytes | string
     Children?: string[]
     InternalChildren?: string[]
+    Requires?: Object[]
 }
 
 // Correctly types interface checks.
-export function type_is_a<T extends Object>(obj: Object, is_a_type: { $gtype: GType<T> }): obj is T;
+export function type_is_a<T extends Object>(obj: Object, is_a_type: { $gtype: GType<T> }): obj is T
 
 export class Interface<T = unknown> {
-    static _classInit: (cls: any) => any;
-    __name__: string;
-    _construct: (params: any, ...otherArgs: any[]) => any;
-    _init: (params: any) => void;
-    $gtype?: GType<T>;
+    static _classInit: (cls: any) => any
+    __name__: string
+    _construct: (params: any, ...otherArgs: any[]) => any
+    _init: (params: any) => void
+    $gtype?: GType<T>
 }
 
 /**
@@ -48,60 +49,60 @@ export class NotImplementedError extends Error {
     get name(): 'NotImplementedError'
 }
 
-export const __gtkCssName__: unique symbol;
-export const __gtkTemplate__: unique symbol;
-export const __gtkChildren__: unique symbol;
-export const __gtkInternalChildren__: unique symbol;
+export const __gtkCssName__: unique symbol
+export const __gtkTemplate__: unique symbol
+export const __gtkChildren__: unique symbol
+export const __gtkInternalChildren__: unique symbol
 
 // Expose GObject static properties for ES6 classes
 
-export const GTypeName: unique symbol;
-export const requires: unique symbol;
-export const interfaces: unique symbol;
-export const properties: unique symbol;
-export const signals: unique symbol;
+export const GTypeName: unique symbol
+export const requires: unique symbol
+export const interfaces: unique symbol
+export const properties: unique symbol
+export const signals: unique symbol
 
-export let gtypeNameBasedOnJSPath: boolean;
+export let gtypeNameBasedOnJSPath: boolean
 
-export let TYPE_BOOLEAN: GType<boolean>;
-export let Boolean: BooleanConstructor;
+export let TYPE_BOOLEAN: GType<boolean>
+export let Boolean: BooleanConstructor
 
-export let TYPE_ENUM: GType<number>;
-export let TYPE_FLAGS: GType<number>;
+export let TYPE_ENUM: GType<number>
+export let TYPE_FLAGS: GType<number>
 
-export let TYPE_DOUBLE: GType<number>;
-export let Double: NumberConstructor;
+export let TYPE_DOUBLE: GType<number>
+export let Double: NumberConstructor
 
-export let TYPE_STRING: GType<string>;
-export let String: StringConstructor;
+export let TYPE_STRING: GType<string>
+export let String: StringConstructor
 
-export let TYPE_NONE: GType<undefined>;
-export let TYPE_POINTER: GType<undefined>;
-export let TYPE_BOXED: GType<unknown>;
-export let TYPE_PARAM: GType<unknown>;
-export let TYPE_INTERFACE: GType<unknown>;
-export let TYPE_OBJECT: GType<object>;
-export let TYPE_JSOBJECT: GType<Object>;
-export let TYPE_VARIANT: GType<GLib.Variant>;
-export let TYPE_INT: GType<number>;
-export let TYPE_UINT: GType<number>;
-export let TYPE_INT64: GType<number>;
-export let TYPE_UINT64: GType<number>;
+export let TYPE_NONE: GType<undefined>
+export let TYPE_POINTER: GType<undefined>
+export let TYPE_BOXED: GType<unknown>
+export let TYPE_PARAM: GType<unknown>
+export let TYPE_INTERFACE: GType<unknown>
+export let TYPE_OBJECT: GType<object>
+export let TYPE_JSOBJECT: GType<Object>
+export let TYPE_VARIANT: GType<GLib.Variant>
+export let TYPE_INT: GType<number>
+export let TYPE_UINT: GType<number>
+export let TYPE_INT64: GType<number>
+export let TYPE_UINT64: GType<number>
 
 // fake enum for signal accumulators, keep in sync with gi/object.c
 export enum AccumulatorType {
-    NONE=0,
-    FIRST_WINS=1,
-    TRUE_HANDLED=2,
+    NONE = 0,
+    FIRST_WINS = 1,
+    TRUE_HANDLED = 2,
 }
 
 // A simple workaround if you have a class with .connect, .disconnect or .emit
 // methods (such as Gio.Socket.connect or NMClient.Device.disconnect)
 // The original g_signal_* functions are not introspectable anyway, because
 // we need our own handling of signal argument marshalling
-export function signal_connect(object: Object, name: string, handler: (...args: any[]) => any): number;
-export function signal_connect_after(object: Object, name: string, handler: (...args: any[]) => any): number;
-export function signal_emit_by_name(object: Object, name: string, ...args: any[]): void;
+export function signal_connect(object: Object, name: string, handler: (...args: any[]) => any): number
+export function signal_connect_after(object: Object, name: string, handler: (...args: any[]) => any): number
+export function signal_emit_by_name(object: Object, name: string, ...args: any[]): void
 
 /**
  * Finds the first signal handler that matches certain selection criteria.
@@ -116,7 +117,10 @@ export function signal_emit_by_name(object: Object, name: string, ...args: any[]
  * @param match.func the callback function the handler will invoke.
  * @returns A valid non-0 signal handler ID for a successful match.
  */
-export function signal_handler_find(instance: Object, match: {signalId: string, detail: string, func: (...args: any[]) => any}): number | bigint | object | null
+export function signal_handler_find(
+    instance: Object,
+    match: { signalId: string; detail: string; func: (...args: any[]) => any },
+): number | bigint | object | null
 
 /**
  * Blocks all handlers on an instance that match certain selection criteria.
@@ -132,7 +136,10 @@ export function signal_handler_find(instance: Object, match: {signalId: string,
  * @param match.func the callback function the handler will invoke.
  * @returns The number of handlers that matched.
  */
-export function signal_handlers_block_matched(instance: Object, match: {signalId: string, detail: string, func: (...args: any[]) => any}): number
+export function signal_handlers_block_matched(
+    instance: Object,
+    match: { signalId: string; detail: string; func: (...args: any[]) => any },
+): number
 
 /**
  * Disconnects all handlers on an instance that match certain selection
@@ -150,7 +157,10 @@ export function signal_handlers_block_matched(instance: Object, match: {signalId
  * @param match.func the callback function the handler will invoke.
  * @returns The number of handlers that matched.
  */
-export function signal_handlers_unblock_matched(instance: Object, match: {signalId: string, detail: string, func: (...args: any[]) => any}): number
+export function signal_handlers_unblock_matched(
+    instance: Object,
+    match: { signalId: string; detail: string; func: (...args: any[]) => any },
+): number
 
 /**
  * Disconnects all handlers on an instance that match certain selection
@@ -168,7 +178,10 @@ export function signal_handlers_unblock_matched(instance: Object, match: {signal
  * @param match.func the callback function the handler will invoke.
  * @returns The number of handlers that matched.
  */
-export function signal_handlers_disconnect_matched(instance: Object, match: {signalId: string, detail: string, func: (...args: any[]) => any}): number
+export function signal_handlers_disconnect_matched(
+    instance: Object,
+    match: { signalId: string; detail: string; func: (...args: any[]) => any },
+): number
 
 // Also match the macros used in C APIs, even though they're not introspected
 
@@ -179,7 +192,7 @@ export function signal_handlers_disconnect_matched(instance: Object, match: {sig
  * @param func the callback function the handler will invoke.
  * @returns The number of handlers that matched.
  */
-export function signal_handlers_block_by_func(instance: Object, func: (...args: any[]) => any): number;
+export function signal_handlers_block_by_func(instance: Object, func: (...args: any[]) => any): number
 
 /**
  * Unblocks all handlers on an instance that match `func`.
@@ -189,7 +202,7 @@ export function signal_handlers_block_by_func(instance: Object, func: (...args:
  * @param func the callback function the handler will invoke.
  * @returns The number of handlers that matched.
  */
-export function signal_handlers_unblock_by_func(instance: Object, func: (...args: any[]) => any): number;
+export function signal_handlers_unblock_by_func(instance: Object, func: (...args: any[]) => any): number
 
 /**
  * Disconnects all handlers on an instance that match `func`.
@@ -198,17 +211,15 @@ export function signal_handlers_unblock_by_func(instance: Object, func: (...args
  * @param func the callback function the handler will invoke.
  * @returns The number of handlers that matched.
  */
-export function signal_handlers_disconnect_by_func(instance: Object, func: (...args: any[]) => any): number;
-export function signal_handlers_disconnect_by_data(): void;
+export function signal_handlers_disconnect_by_func(instance: Object, func: (...args: any[]) => any): number
+export function signal_handlers_disconnect_by_data(): void
 
-export type Property<K extends ParamSpec> = K extends ParamSpec<infer T>
-    ? T
-    : any;
+export type Property<K extends ParamSpec> = K extends ParamSpec<infer T> ? T : any
 
-// TODO: What about the generated class Closure 
-export type TClosure<R = any, P = any> = (...args: P[]) => R;
+// TODO: What about the generated class Closure
+export type TClosure<R = any, P = any> = (...args: P[]) => R
 
-type ObjectConstructor = { new(...args: any[]): Object };
+type ObjectConstructor = { new (...args: any[]): Object }
 
 export function registerClass<
     T extends ObjectConstructor,
@@ -216,13 +227,10 @@ export function registerClass<
     Interfaces extends { $gtype: GType }[],
     Sigs extends {
         [key: string]: {
-            param_types?: readonly GType[];
-            [key: string]: any;
-        };
-    }
->(
-    options: MetaInfo<Props, Interfaces, Sigs>,
-    cls: T
-): T;
+            param_types?: readonly GType[]
+            [key: string]: any
+        }
+    },
+>(options: MetaInfo<Props, Interfaces, Sigs>, cls: T): T
 
 export function registerClass<T extends ObjectConstructor>(cls: T): T