btc-vision · BlobMaster41 · Mar 8, 2026 · Mar 8, 2026 · Mar 8, 2026 · Mar 8, 2026
diff --git a/.eslintrc.cjs b/.eslintrc.cjs
@@ -65,6 +65,9 @@ module.exports = {
     // Quite often, dealing with multiple related cases at once or otherwise
     // falling through is exactly the point of using a switch.
     "no-fallthrough": "off",
+    "no-useless-assignment": "off",
+    "no-unassigned-vars": "off",
+    "preserve-caught-error": "off",
 
     // Typical false-positives here are `do { ... } while (true)` statements or
     // similar, but the only option provided here is not checking any loops.

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
@@ -2,45 +2,48 @@ name: Test
 on:
   push:
     branches:
-    - main
+      - main
   pull_request:
 jobs:
   check:
     name: "Check"
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v6
-    - name: "Check that distribution files are unmodified"
-      if: github.event_name == 'pull_request'
-      run: |
-        if git --no-pager diff --name-only $(git rev-parse origin/${{ github.base_ref }})...${{ github.sha }} | grep -q "^dist/"; then
-          printf "\nThe pull request modifies distribution files, but it shouldn't.\n" &&
-          printf "Please see https://github.com/AssemblyScript/assemblyscript/blob/main/CONTRIBUTING.md\n" &&
-          exit 1;
-        else
-          printf "\nOK: Distributions files have not been modified.\n";
-        fi
+      - uses: actions/checkout@v6
+      - uses: actions/setup-node@v6
+        with:
+          node-version: '24'
+      - name: "Check that distribution files are unmodified"
+        if: github.event_name == 'pull_request'
+        run: |
+          if git --no-pager diff --name-only $(git rev-parse origin/${{ github.base_ref }})...${{ github.sha }} | grep -q "^dist/"; then
+            printf "\nThe pull request modifies distribution files, but it shouldn't.\n" &&
+            printf "Please see https://github.com/AssemblyScript/assemblyscript/blob/main/CONTRIBUTING.md\n" &&
+            exit 1;
+          else
+            printf "\nOK: Distributions files have not been modified.\n";
+          fi
   compiler:
     name: "Compiler (${{ matrix.os }}, node ${{ matrix.node_version }})"
     runs-on: ${{ matrix.os }}-latest
     needs: check
     strategy:
       matrix:
         os: ["ubuntu", "macos", "windows"]
-        node_version: ["current", "lts/*"]
+        node_version: ["25", "lts/*"]
     steps:
-    - uses: actions/checkout@v6
-    - uses: actions/setup-node@v6
-      with:
-        node-version: ${{ matrix.node_version }}
-    - name: Install dependencies
-      run: npm ci --no-audit
-    - name: Build
-      run: npm run build
-    - name: Check
-      run: npm run check
-    - name: Test
-      run: npm test
+      - uses: actions/checkout@v6
+      - uses: actions/setup-node@v6
+        with:
+          node-version: ${{ matrix.node_version }}
+      - name: Install dependencies
+        run: npm ci --no-audit
+      - name: Build
+        run: npm run build
+      - name: Check
+        run: npm run check
+      - name: Test
+        run: npm test
   bootstrap:
     name: "Bootstrap (${{ matrix.target }})"
     runs-on: ubuntu-latest
@@ -49,95 +52,97 @@ jobs:
       matrix:
         target: ["debug", "release"]
     steps:
-    - uses: actions/checkout@v6
-    - uses: actions/setup-node@v6
-      with:
-        node-version: current
-    - name: Install dependencies
-      run: npm ci --no-audit
-    - name: Build
-      run: npm run build
-    - name: "Bootstrap ${{ matrix.target }}"
-      run: npm run bootstrap:${{ matrix.target }}
-    - name: "Test ${{ matrix.target }}"
-      run: npm run test:compiler -- --wasm build/assemblyscript.${{ matrix.target }}-bootstrap.js
-    - name: "Compile ${{ matrix.target }} -> ${{ matrix.target == 'debug' && 'release' || 'debug' }}"
-      run: node bin/asc --config src/asconfig.json --target ${{ matrix.target == 'debug' && 'release' || 'debug' }}-bootstrap --wasm ./build/assemblyscript.${{ matrix.target }}-bootstrap.js
-    - name: "Test ${{ matrix.target == 'debug' && 'release' || 'debug' }}"
-      run: npm run test:compiler -- --wasm build/assemblyscript.${{ matrix.target == 'debug' && 'release' || 'debug' }}-bootstrap.js
+      - uses: actions/checkout@v6
+      - uses: actions/setup-node@v6
+        with:
+          node-version: current
+      - name: Install dependencies
+        run: npm ci --no-audit
+      - name: Build
+        run: npm run build
+      - name: "Bootstrap ${{ matrix.target }}"
+        run: npm run bootstrap:${{ matrix.target }}
+      - name: "Test ${{ matrix.target }}"
+        run: npm run test:compiler -- --wasm build/assemblyscript.${{ matrix.target }}-bootstrap.js
+      - name: "Compile ${{ matrix.target }} -> ${{ matrix.target == 'debug' && 'release' || 'debug' }}"
+        run: node bin/asc --config src/asconfig.json --target ${{ matrix.target == 'debug' && 'release' || 'debug' }}-bootstrap --wasm ./build/assemblyscript.${{ matrix.target }}-bootstrap.js
+      - name: "Test ${{ matrix.target == 'debug' && 'release' || 'debug' }}"
+        run: npm run test:compiler -- --wasm build/assemblyscript.${{ matrix.target == 'debug' && 'release' || 'debug' }}-bootstrap.js
   features:
     name: "Features"
     runs-on: ubuntu-latest
     needs: check
     steps:
-    - uses: actions/checkout@v6
-    - uses: actions/setup-node@v6
-    - name: Install dependencies
-      run: npm ci --no-audit
-    - name: Build
-      run: npm run build
-    - name: Test experimental features
-      env:
-        ASC_FEATURES: threads,reference-types,gc,exception-handling
-      run: |
-        npm run test:compiler features/threads features/reference-types features/gc features/exception-handling bindings/esm bindings/raw
+      - uses: actions/checkout@v6
+      - uses: actions/setup-node@v6
+        with:
+          node-version: '24'
+      - name: Install dependencies
+        run: npm ci --no-audit
+      - name: Build
+        run: npm run build
+      - name: Test experimental features
+        env:
+          ASC_FEATURES: threads,reference-types,gc,exception-handling
+        run: |
+          npm run test:compiler features/threads features/reference-types features/gc features/exception-handling bindings/esm bindings/raw
   runtimes:
     name: "Runtimes"
     runs-on: ubuntu-latest
     needs: check
     steps:
-    - uses: actions/checkout@v6
-    - uses: actions/setup-node@v6
-      with:
-        node-version: current
-    - name: Install dependencies
-      run: npm ci --no-audit
-    - name: Build
-      run: npm run build
-    - name: Test default allocator
-      run: |
-        cd tests/allocators/default
-        npm run build
-        cd ..
-        npm test default
-    - name: Test stub allocator
-      run: |
-        cd tests/allocators/stub
-        npm run build
-        cd ..
-        npm test stub
+      - uses: actions/checkout@v6
+      - uses: actions/setup-node@v6
+        with:
+          node-version: current
+      - name: Install dependencies
+        run: npm ci --no-audit
+      - name: Build
+        run: npm run build
+      - name: Test default allocator
+        run: |
+          cd tests/allocators/default
+          npm run build
+          cd ..
+          npm test default
+      - name: Test stub allocator
+        run: |
+          cd tests/allocators/stub
+          npm run build
+          cd ..
+          npm test stub
   loader:
     name: "Loader"
     runs-on: ubuntu-latest
     needs: check
     steps:
-    - uses: actions/checkout@v6
-    - uses: actions/setup-node@v6
-      with:
-        node-version: current
-    - name: Install dependencies
-      run: npm ci --no-audit
-    - name: Build
-      run: npm run build
-    - name: Test the loader
-      run: |
-        cd lib/loader
-        npm run asbuild
-        npm run test
+      - uses: actions/checkout@v6
+      - uses: actions/setup-node@v6
+        with:
+          node-version: current
+      - name: Install dependencies
+        run: npm ci --no-audit
+      - name: Build
+        run: npm run build
+      - name: Test the loader
+        run: |
+          cd lib/loader
+          npm run asbuild
+          npm run test
   coverage:
     name: "Coverage"
     runs-on: ubuntu-latest
     needs: check
     steps:
-    - uses: actions/checkout@v6
-    - uses: actions/setup-node@v6
-      with:
-        node-version: 24
-    - name: Install dependencies
-      run: npm ci --no-audit
-    - name: Build
-      run: npm run build
-    - name: Collect coverage
-      run: npx c8 -r none -- npm test
-    - name: Output coverage summary
-      run: npx c8 report -r text-summary
+      - uses: actions/checkout@v6
+      - uses: actions/setup-node@v6
+        with:
+          node-version: 24
+      - name: Install dependencies
+        run: npm ci --no-audit
+      - name: Build
+        run: npm run build
+      - name: Collect coverage
+        run: npx c8 -r none -- npm test
+      - name: Output coverage summary
+        run: npx c8 report -r text-summary
diff --git a/cli/index.js b/cli/index.js
@@ -300,6 +300,7 @@ export async function main(argv, options) {
   switch (opts.runtime) {
     case "stub": runtime = 0; break;
     case "minimal": runtime = 1; break;
+    case "memory": runtime = 3; break;
     /* incremental */
     default: runtime = 2; break;
   }
@@ -731,6 +732,12 @@ export async function main(argv, options) {
     try {
       module = assemblyscript.compile(program);
     } catch (e) {
+      let numErrors = checkDiagnostics(program, stderr, opts.disableWarning, options.reportDiagnostic, stderrColors.enabled);
+      if (numErrors) {
+        const err = Error(`${numErrors} compile error(s)`);
+        err.stack = err.message;
+        return prepareResult(err);
+      }
       crash("compile", e);
     }
     stats.compileTime += stats.end(begin);

diff --git a/eslint.config.js b/eslint.config.js
@@ -14,6 +14,7 @@ export default tseslint.config(
     ]
   },
 
+
   eslint.configs.recommended,
 
   // === General rules =========================================================
@@ -65,14 +66,17 @@ export default tseslint.config(
       // It is perfectly fine to declare top-level variables with `var`, yet this
       // rule doesn't provide configuration options that would help.
       "no-var": "off",
+      "no-useless-assignment": "off",
+      "no-unassigned-vars": "off",
+      "preserve-caught-error": "off",
 
       // Quite often, dealing with multiple related cases at once or otherwise
       // falling through is exactly the point of using a switch.
       "no-fallthrough": "off",
 
       // Typical false-positives here are `do { ... } while (true)` statements or
       // similar, but the only option provided here is not checking any loops.
-      "no-constant-condition": ["error", { checkLoops: false }],
+      "no-constant-condition": ["error", {checkLoops: false}],
 
       // Functions are nested in blocks occasionally, and there haven't been any
       // problems with this so far, so turning the check off.

diff --git a/lib/README.md b/lib/README.md
@@ -5,7 +5,7 @@ Additional packages provided by the main package.
 
 | Package                            | Description
 |------------------------------------|-------------------------
-| [@assemblyscript/loader](./loader) | Module loader utility
+| [@btc-vision/as-loader](./loader) | Module loader utility
 | [@assemblyscript/rtrace](./rtrace) | Runtime tracing utility
 | binaryen | Binaryen proxy
 

diff --git a/lib/loader/README.md b/lib/loader/README.md
@@ -7,7 +7,7 @@ A tiny module loader that makes working with AssemblyScript modules as convenien
 ## Example
 
 ```ts
-import loader from "@assemblyscript/loader"; // or require
+import loader from "@btc-vision/as-loader"; // or require
 loader.instantiate(
   // Binary to instantiate
   fetch("optimized.wasm"), // or fs.readFileSync
@@ -24,19 +24,19 @@ The loader basically instantiates the module using `WebAssembly` APIs, but also
 
 ## Installation
 
-The loader can be installed from [npm](https://www.npmjs.com/package/@assemblyscript/loader):
+The loader can be installed from [npm](https://www.npmjs.com/package/@btc-vision/as-loader):
 
 ```sh
-npm install --save @assemblyscript/loader
+npm install --save @btc-vision/as-loader
 ```
 
 On the web:
 
 ```html
 <!-- ESM -->
-<script type="module" src="https://cdn.jsdelivr.net/npm/@assemblyscript/loader/index.js"></script>
+<script type="module" src="https://cdn.jsdelivr.net/npm/@btc-vision/as-loader/index.js"></script>
 <!-- UMD -->
-<script src="https://cdn.jsdelivr.net/npm/@assemblyscript/loader/umd/index.js"></script>
+<script src="https://cdn.jsdelivr.net/npm/@btc-vision/as-loader/umd/index.js"></script>
 ```
 
 ## Usage