test/passes/emit-js-wrapper=a.js.txt

(module
 (type $0 (func (param i32 i32) (result i32)))
 (type $1 (func (param i32)))
 (type $2 (func (param i32 i64 f32 f64)))
 (type $3 (func (param i32 f32 f64)))
 (type $4 (func (param i32 f32 f64) (result i64)))
 (memory $0 256 256)
 (export "add" (func $add))
 (export "no_return" (func $no-return))
 (export "types" (func $types))
 (export "types2" (func $types2))
 (export "types3" (func $types3))
 (func $add (type $0) (param $x i32) (param $y i32) (result i32)
  (i32.add
   (get_local $x)
   (get_local $y)
  )
 )
 (func $unexported (type $0) (param $x i32) (param $y i32) (result i32)
  (i32.add
   (get_local $x)
   (get_local $y)
  )
 )
 (func $no-return (type $1) (param $x i32)
  (drop
   (i32.add
    (get_local $x)
    (get_local $x)
   )
  )
 )
 (func $types (type $2) (param $x i32) (param $y i64) (param $z f32) (param $w f64)
  (nop)
 )
 (func $types2 (type $3) (param $x i32) (param $z f32) (param $w f64)
  (nop)
 )
 (func $types3 (type $4) (param $x i32) (param $z f32) (param $w f64) (result i64)
  (i64.const 1)
 )
)