Fix

Author: vigoo

.github/workflows/ci.yaml

@@ -30,7 +30,7 @@ jobs:
           override: true
       - name: Install moonbit
         run: |
-          curl -fsSL https://cli.moonbitlang.com/install/unix.sh | bash
+          curl -fsSL https://cli.moonbitlang.com/install/unix.sh | bash -s -- 0.6.19
           echo "$HOME/.moon/bin" >> $GITHUB_PATH
       - name: Bundle core MoonBit library
         run: moon bundle --target wasm
@@ -60,7 +60,7 @@ jobs:
           override: true
       - name: Install moonbit
         run: |
-          curl -fsSL https://cli.moonbitlang.com/install/unix.sh | bash
+          curl -fsSL https://cli.moonbitlang.com/install/unix.sh | bash -s -- 0.6.19
           echo "$HOME/.moon/bin" >> $GITHUB_PATH
       - name: Bundle core MoonBit library
         run: moon bundle --target wasm
@@ -90,7 +90,7 @@ jobs:
           override: true
       - name: Install moonbit
         run: |
-          curl -fsSL https://cli.moonbitlang.com/install/unix.sh | bash
+          curl -fsSL https://cli.moonbitlang.com/install/unix.sh | bash -s -- 0.6.19
           echo "$HOME/.moon/bin" >> $GITHUB_PATH
       - name: Bundle core MoonBit library
         run: moon bundle --target wasm

README.md

@@ -16,9 +16,9 @@ Some example use cases are exposed by crate features:
 The crate implements the general machinery for generating WASM components from MoonBit source, and it also exports a few example use cases:
 
 ### "Get Script" component
-The simplest example generates a WASM component that exports a single function `get-script` which returns a string. 
-This can be used to attach dynamic content to a statically compiled WASM component via composition, 
-for example providing user-defined JavaScript code to a precompiled WASM JavaScript engine. 
+The simplest example generates a WASM component that exports a single function `get-script` which returns a string.
+This can be used to attach dynamic content to a statically compiled WASM component via composition,
+for example providing user-defined JavaScript code to a precompiled WASM JavaScript engine.
 
 To use this generator, just provide the script contents and the target WASM path:
 
@@ -72,7 +72,10 @@ fn main() {
 
 To update and build the MoonBit core library:
 
+**NOTE**: requires the 0.6.19 version of MoonBit currently
+
 ```
+curl -fsSL https://cli.moonbitlang.com/install/unix.sh | bash -s -- 0.6.19
 git submodule update --recursive
 moon bundle --target wasm
 ```

src/lib.rs

@@ -1,4 +1,4 @@
-use anyhow::anyhow;
+use anyhow::{Context, anyhow};
 use camino::{Utf8Path, Utf8PathBuf};
 use camino_tempfile::Utf8TempDir;
 use heck::{ToLowerCamelCase, ToSnakeCase};
@@ -608,7 +608,9 @@ impl MoonBitComponent {
         let resolve = self.resolve.as_ref().unwrap();
         let world = &self.world_id.unwrap();
 
-        let mut wasm = std::fs::read(self.module_wasm())?;
+        let module_wasm = self.module_wasm();
+        let mut wasm = std::fs::read(&module_wasm)
+            .context(format!("Failed to read module WASM from {module_wasm}"))?;
 
         wit_component::embed_component_metadata(&mut wasm, resolve, *world, StringEncoding::UTF16)?;