diff --git a/v3/internal/generator/render/create.go b/v3/internal/generator/render/create.go
index 8a7880390..1332345d1 100644
--- a/v3/internal/generator/render/create.go
+++ b/v3/internal/generator/render/create.go
@@ -213,17 +213,22 @@ func (m *module) PostponedCreates() []string {
 	m.postponedCreates.Iterate(func(key types.Type, value any) {
 		pp := value.(*postponed)
 
-		pre := ""
+		pre, post := "", ""
 		if pp.params != "" {
-			pre = pp.params + " => "
+			if m.TS {
+				pre = createParamRegex.ReplaceAllString(pp.params, "${0}: any") + " => "
+			} else {
+				pre = "/** @type {(...args: any[]) => any} */(" + pp.params + " => "
+				post = ")"
+			}
 		}
 
 		switch t := key.(type) {
 		case *types.Array, *types.Slice:
-			result[pp.index] = fmt.Sprintf("%s$Create.Array(%s)", pre, m.JSCreateWithParams(t.(interface{ Elem() types.Type }).Elem(), pp.params))
+			result[pp.index] = fmt.Sprintf("%s$Create.Array(%s)%s", pre, m.JSCreateWithParams(t.(interface{ Elem() types.Type }).Elem(), pp.params), post)
 
 		case *types.Map:
-			result[pp.index] = fmt.Sprintf("%s$Create.Map($Create.Any, %s)", pre, m.JSCreateWithParams(t.Elem(), pp.params))
+			result[pp.index] = fmt.Sprintf("%s$Create.Map($Create.Any, %s)%s", pre, m.JSCreateWithParams(t.Elem(), pp.params), post)
 
 		case *types.Named:
 			if !collect.IsClass(key) {
@@ -231,23 +236,24 @@ func (m *module) PostponedCreates() []string {
 				// require an indirect assignment to break cycles.
 
 				// Typescript cannot infer the return type on its own: add hints.
-				cast, returnType := "", ""
+				cast, argType, returnType := "", "", ""
 				if m.TS {
+					argType = ": any[]"
 					returnType = ": any"
 				} else {
 					cast = "/** @type {(...args: any[]) => any} */"
 				}
 
 				result[pp.index] = fmt.Sprintf(`
-%s(function $$initCreateType%d(...args)%s {
+%s(function $$initCreateType%d(...args%s)%s {
     if ($$createType%d === $$initCreateType%d) {
-        $$createType%d = %s%s;
+        $$createType%d = %s%s%s;
     }
     return $$createType%d(...args);
 })`,
-					cast, pp.index, returnType,
+					cast, pp.index, argType, returnType,
 					pp.index, pp.index,
-					pp.index, pre, m.JSCreateWithParams(t.Underlying(), pp.params),
+					pp.index, pre, m.JSCreateWithParams(t.Underlying(), pp.params), post,
 					pp.index,
 				)[1:] // Remove initial newline.
 
@@ -280,11 +286,12 @@ func (m *module) PostponedCreates() []string {
 				}
 				builder.WriteString(")")
 			}
+			builder.WriteString(post)
 
 			result[pp.index] = builder.String()
 
 		case *types.Pointer:
-			result[pp.index] = fmt.Sprintf("%s$Create.Nullable(%s)", pre, m.JSCreateWithParams(t.Elem(), pp.params))
+			result[pp.index] = fmt.Sprintf("%s$Create.Nullable(%s)%s", pre, m.JSCreateWithParams(t.Elem(), pp.params), post)
 
 		case *types.Struct:
 			info := m.collector.Struct(t)
@@ -311,11 +318,12 @@ func (m *module) PostponedCreates() []string {
 				builder.WriteRune('\n')
 			}
 			builder.WriteString("})")
+			builder.WriteString(post)
 
 			result[pp.index] = builder.String()
 
 		default:
-			result[pp.index] = pre + "$Create.Any"
+			result[pp.index] = pre + "$Create.Any" + post
 		}
 	})
 
diff --git a/v3/internal/generator/render/info.go b/v3/internal/generator/render/info.go
index 7cd95a3f6..b3305e3f8 100644
--- a/v3/internal/generator/render/info.go
+++ b/v3/internal/generator/render/info.go
@@ -1,6 +1,7 @@
 package render
 
 import (
+	"regexp"
 	"strings"
 
 	"github.com/wailsapp/wails/v3/internal/generator/collect"
@@ -26,6 +27,9 @@ type modelInfo struct {
 	}
 }
 
+// createParamRegex must match type parameter creation strings as generated by [modelinfo].
+var createParamRegex = regexp.MustCompile(`\$\$createParam[^\s,)]*`)
+
 // modelinfo gathers and returns useful information about the given model.
 func modelinfo(model *collect.ModelInfo, useInterfaces bool) (info modelInfo) {
 	info.HasValues = len(model.Values) > 0
diff --git a/v3/internal/generator/render/templates/models.js.tmpl b/v3/internal/generator/render/templates/models.js.tmpl
index 4d12429d0..5fe0db83c 100644
--- a/v3/internal/generator/render/templates/models.js.tmpl
+++ b/v3/internal/generator/render/templates/models.js.tmpl
@@ -9,7 +9,7 @@
 {{if not $useInterfaces}}
 // eslint-disable-next-line @typescript-eslint/ban-ts-comment
 // @ts-ignore: Unused imports
-import {Create as $Create} from "{{js $runtime}}";
+import { Create as $Create } from "{{js $runtime}}";
 {{end -}}
 {{range $imports.External}}
 // eslint-disable-next-line @typescript-eslint/ban-ts-comment
diff --git a/v3/internal/generator/render/templates/models.ts.tmpl b/v3/internal/generator/render/templates/models.ts.tmpl
index e82e7311a..d5ec2a971 100644
--- a/v3/internal/generator/render/templates/models.ts.tmpl
+++ b/v3/internal/generator/render/templates/models.ts.tmpl
@@ -8,7 +8,7 @@
 {{if not $useInterfaces}}
 // eslint-disable-next-line @typescript-eslint/ban-ts-comment
 // @ts-ignore: Unused imports
-import {Create as $Create} from "{{js $runtime}}";
+import { Create as $Create } from "{{js $runtime}}";
 {{end -}}
 {{range $imports.External}}
 // eslint-disable-next-line @typescript-eslint/ban-ts-comment
diff --git a/v3/internal/generator/render/templates/service.js.tmpl b/v3/internal/generator/render/templates/service.js.tmpl
index bde8ad188..f71e055bf 100644
--- a/v3/internal/generator/render/templates/service.js.tmpl
+++ b/v3/internal/generator/render/templates/service.js.tmpl
@@ -22,7 +22,7 @@
 {{end}}
 // eslint-disable-next-line @typescript-eslint/ban-ts-comment
 // @ts-ignore: Unused imports
-import {Call as $Call{{if not $useInterfaces}}, Create as $Create{{end -}} } from "{{js $runtime}}";
+import { Call as $Call, CancellablePromise as $CancellablePromise{{if not $useInterfaces}}, Create as $Create{{end}} } from "{{js $runtime}}";
 {{range $imports.External}}
 // eslint-disable-next-line @typescript-eslint/ban-ts-comment
 // @ts-ignore: Unused imports
@@ -46,7 +46,7 @@ import * as $models from "./{{js $models}}";
 {{- range $i, $param := .Params}}
  * @param { {{- $module.JSType .Type}}{{if .Variadic}}[]{{end -}} } {{jsparam $i .}}
 {{- end}}
- * @returns {Promise<
+ * @returns {$CancellablePromise<
     {{- if eq 0 (len .Results) -}}
         void
     {{- else if eq 1 (len .Results)}}
@@ -56,7 +56,7 @@ import * as $models from "./{{js $models}}";
             {{- if gt $i 0}}, {{end}}
             {{- $module.JSType $result}}
         {{- end}}]
-    {{- end}}> & { cancel(): void }}
+    {{- end}}>}
  */
 {{if not .Internal}}export {{end}}function {{.Name}}({{range $i, $param := .Params -}}
     {{- if gt $i 0}}, {{end}}
@@ -64,14 +64,14 @@ import * as $models from "./{{js $models}}";
     {{- jsparam $i .}}
 {{- end}}) {
     {{- if $useNames}}
-    let $resultPromise = /** @type {any} */($Call.ByName("{{js .FQN}}"
+    return $Call.ByName("{{js .FQN}}"
     {{- else}}
-    let $resultPromise = /** @type {any} */($Call.ByID({{.ID}}
-    {{- end}}{{range $i, $param := .Params}}, {{jsparam $i .}}{{end}}));
-    {{- if or $useInterfaces (not .Results) ($module.SkipCreate .Results)}}
-    return $resultPromise;
-    {{- else}}
-    let $typingPromise = /** @type {any} */($resultPromise.then(($result) => {
+    return $Call.ByID({{.ID}}
+    {{- end}}{{range $i, $param := .Params}}, {{jsparam $i .}}{{end}})
+    {{- if or $useInterfaces (not .Results) ($module.SkipCreate .Results) -}}
+    ;
+    {{- else -}}
+    .then(/** @type {($result: any) => any} */(($result) => {
     {{- if eq 1 (len .Results)}}
         return {{$module.JSCreate (index .Results 0)}}($result);
     {{- else}}
@@ -83,8 +83,6 @@ import * as $models from "./{{js $models}}";
         return $result;
     {{- end}}
     }));
-    $typingPromise.cancel = $resultPromise.cancel.bind($resultPromise);
-    return $typingPromise;
     {{- end}}
 }
 {{end}}
diff --git a/v3/internal/generator/render/templates/service.ts.tmpl b/v3/internal/generator/render/templates/service.ts.tmpl
index 9a2f0cd31..4db90fe60 100644
--- a/v3/internal/generator/render/templates/service.ts.tmpl
+++ b/v3/internal/generator/render/templates/service.ts.tmpl
@@ -21,7 +21,7 @@
 {{end}}
 // eslint-disable-next-line @typescript-eslint/ban-ts-comment
 // @ts-ignore: Unused imports
-import {Call as $Call{{if not $useInterfaces}}, Create as $Create{{end -}} } from "{{js $runtime}}";
+import { Call as $Call, CancellablePromise as $CancellablePromise{{if not $useInterfaces}}, Create as $Create{{end}} } from "{{js $runtime}}";
 {{range $imports.External}}
 // eslint-disable-next-line @typescript-eslint/ban-ts-comment
 // @ts-ignore: Unused imports
@@ -49,7 +49,7 @@ import * as $models from "./{{js $models}}";
     {{- if gt $i 0}}, {{end}}
     {{- if .Variadic}}...{{end}}
     {{- jsparam $i .}}: {{$module.JSType .Type}}{{if .Variadic}}[]{{end}}
-{{- end}}): Promise<
+{{- end}}): $CancellablePromise<
     {{- if eq 0 (len .Results) -}}
         void
     {{- else if eq 1 (len .Results)}}
@@ -59,16 +59,16 @@ import * as $models from "./{{js $models}}";
             {{- if gt $i 0}}, {{end}}
             {{- $module.JSType $result}}
         {{- end}}]
-    {{- end}}> & { cancel(): void } {
+    {{- end}}> {
     {{- if $useNames}}
-    let $resultPromise = $Call.ByName("{{js .FQN}}"
+    return $Call.ByName("{{js .FQN}}"
     {{- else}}
-    let $resultPromise = $Call.ByID({{.ID}}
-    {{- end}}{{range $i, $param := .Params}}, {{jsparam $i .}}{{end}}) as any;
-    {{- if or $useInterfaces (not .Results) ($module.SkipCreate .Results)}}
-    return $resultPromise;
-    {{- else}}
-    let $typingPromise = $resultPromise.then(($result: any) => {
+    return $Call.ByID({{.ID}}
+    {{- end}}{{range $i, $param := .Params}}, {{jsparam $i .}}{{end}})
+    {{- if or $useInterfaces (not .Results) ($module.SkipCreate .Results) -}}
+    ;
+    {{- else -}}
+    .then(($result: any) => {
     {{- if eq 1 (len .Results)}}
         return {{$module.JSCreate (index .Results 0)}}($result);
     {{- else}}
@@ -79,9 +79,7 @@ import * as $models from "./{{js $models}}";
         {{- end}}{{end}}
         return $result;
     {{- end}}
-    }) as any;
-    $typingPromise.cancel = $resultPromise.cancel.bind($resultPromise);
-    return $typingPromise;
+    });
     {{- end}}
 }
 {{end}}
diff --git a/v3/internal/generator/testdata/tsconfig.json b/v3/internal/generator/testdata/tsconfig.json
index 8bfb46227..aa4939e6a 100644
--- a/v3/internal/generator/testdata/tsconfig.json
+++ b/v3/internal/generator/testdata/tsconfig.json
@@ -1,28 +1,35 @@
 {
-    "compilerOptions": {
-        "allowJs": true,
-        "noEmit": true,
-        "skipLibCheck": true,
+  "include": ["output/**/*.js", "output/**/*.ts"],
+  "exclude": ["output/**/*.got.?s"],
+  "references": [
+    { "path": "../../runtime/desktop/@wailsio/runtime" }
+  ],
+  "compilerOptions": {
+    "allowJs": true,
 
-        "target": "ES6",
-        "lib": ["ES6", "DOM"],
+    "noEmit": true,
+    "skipLibCheck": true,
 
-        "module": "ES6",
-        "moduleResolution": "Node",
-        "isolatedModules": true,
-        "esModuleInterop": true,
+    "target": "ES2015",
+    "module": "ES2015",
+    "moduleResolution": "bundler",
+    "isolatedModules": true,
+    "verbatimModuleSyntax": true,
 
-        "strict": true,
-        "noUnusedLocals": true,
-        "noUnusedParameters": false,
-        "noImplicitAny": false,
-        "noImplicitReturns": true,
-        "noFallthroughCasesInSwitch": true,
+    "lib": [
+      "DOM",
+      "ESNext"
+    ],
 
-        "paths": {
-            "/wails/runtime.js": ["../../runtime/desktop/@wailsio/runtime/types/index.d.ts"]
-        }
-    },
-    "include": ["output/**/*"],
-    "exclude": ["output/**/*.got.?s"]
+    "strict": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": false,
+    "noImplicitAny": true,
+    "noImplicitReturns": true,
+    "noFallthroughCasesInSwitch": true,
+
+    "paths": {
+      "/wails/runtime.js": ["../../runtime/desktop/@wailsio/runtime/src/index.ts"]
+    }
+  }
 }