Update moon compiler and examples

Signed-off-by: Glenn Lewis <[email protected]>

README.md

@@ -544,7 +544,7 @@ To run the examples, type:
 The code has been updated to support compiler `moon version`:
 
 ```bash
-moon 0.1.20240708 (4e51712 2024-07-08)
+moon 0.1.20240711 (84f6b86 2024-07-11)
 ```
 
 ## Reach Out!

examples/count-vowels/index.html

@@ -13,7 +13,6 @@
     WebAssembly.instantiateStreaming(fetch(wasmUnderTest), importObject).then(
       (obj) => {
         console.log('Using simulated Extism SDK...')
-        obj.instance.exports._initialize()
         // configs.vowels = 'aeiouyAEIOUY'
         inputString.value = 'Once upon a dream'
         obj.instance.exports['count_vowels']()
@@ -34,10 +33,10 @@
 
     console.log('Using official Extism JavaScript SDK...')
     let out = await plugin.call('count_vowels', 'from official Extism JavaScript SDK')
-    console.log(out.text());
+    console.log(out.text())
     out = await plugin.call('count_vowels', 'eight more vowels yo ho')
-    console.log(out.text());
+    console.log(out.text())
   </script>
 </body>
 
-</html>
+</html>

examples/greet/index.html

@@ -12,7 +12,6 @@
     // First, use the simulated Extism SDK written in JavaScript:
     WebAssembly.instantiateStreaming(fetch(wasmUnderTest), importObject).then(
       (obj) => {
-        obj.instance.exports._initialize()
         inputString.value = 'from simulated Extism SDK'
         obj.instance.exports['greet']()
         flush()
@@ -29,7 +28,7 @@
     )
 
     let out = await plugin.call('greet', 'from official Extism JavaScript SDK')
-    console.log(out.text());
+    console.log(out.text())
   </script>
 </body>
 

moon.mod.json

@@ -1,6 +1,6 @@
 {
   "name": "extism/moonbit-pdk",
-  "version": "0.18.0",
+  "version": "0.19.0",
   "deps": {
     "gmlewis/json": "0.11.0"
   },

pdk/extism/env.mbt

@@ -98,7 +98,3 @@ pub fn log_debug(offset : Int64) = "extism:host/env" "log_debug"
 /// `log_error` logs an "error" string to the host from the previously-written UTF-8 string written to `offset`.
 /// The user of this PDK will typically not call this method directly.
 pub fn log_error(offset : Int64) = "extism:host/env" "log_error"
-
-// /// `log_trace` logs a "trace" string to the host from the previously-written UTF-8 string written to `offset`.
-// /// The user of this PDK will typically not call this method directly.
-// pub fn log_trace(offset : Int64) = "extism:host/env" "log_trace"

pdk/host/host.mbt

@@ -27,7 +27,9 @@ fn output_bytes_to_memory(b : Bytes) -> Memory {
 pub fn output(b : Bytes) -> Unit {
   let mem = output_bytes_to_memory(b)
   @extism.output_set(mem.offset, mem.length)
-  mem.free()
+  // 2024-07-11: There is currently an issue with the JS SDK where if memory is
+  // freed in the next line, the host receives a null from the `await plugin.call` function.
+  // mem.free()
 }
 
 /// `output_string` converts a MoonBit String (UTF-16) to an Extism string (UTF-8)
@@ -81,13 +83,6 @@ pub fn log_debug_str(s : String) -> Unit {
   @extism.free(offset)
 }
 
-// /// `log_trace_str` is a helper function to log a trace string to the host.
-// pub fn log_trace_str(s : String) -> Unit {
-//   let { offset, .. } = @pdk.ToUtf8::to_utf8(s) |> output_bytes_to_memory()
-//   @extism.log_trace(offset)
-//   @extism.free(offset)
-// }
-
 /// `log_error_str` is a helper function to log an error string to the host.
 pub fn log_error_str(s : String) -> Unit {
   let { offset, .. } = @pdk.ToUtf8::to_utf8(s) |> output_bytes_to_memory()

scripts/python-server.sh

@@ -1,2 +1,3 @@
-#!/bin/bash -ex
+#!/bin/bash -e
+echo "Please visit in your browser: http://localhost:8080/examples/count-vowels or http://localhost:8080/examples/greet and open the DevTools console to see the output"
 python3 -m http.server 8080