Fix invalid TS return types for multivalue signatures (#4210)

Author: RunDevelopment

CHANGELOG.md

@@ -54,6 +54,9 @@
 * Fixed generated types when a static getter/setter has the same name as an instance getter/setter.
   [#4202](https://github.com/rustwasm/wasm-bindgen/pull/4202)
 
+* Fixed invalid TypeScript return types for multivalue signatures.
+  [#4210](https://github.com/rustwasm/wasm-bindgen/pull/4210)
+
 --------------------------------------------------------------------------------
 
 ## [0.2.95](https://github.com/rustwasm/wasm-bindgen/compare/0.2.94...0.2.95)

crates/cli-support/src/wasm2es6js.rs

@@ -99,7 +99,7 @@ pub fn interface(module: &Module) -> Result<String, Error> {
             ret = match ty.results().len() {
                 0 => "void",
                 1 => "number",
-                _ => "Array",
+                _ => "number[]",
             },
         ));
     }
@@ -147,7 +147,7 @@ pub fn typescript(module: &Module) -> Result<String, Error> {
             ret = match ty.results().len() {
                 0 => "void",
                 1 => "number",
-                _ => "Array",
+                _ => "number[]",
             },
         ));
     }