Revert "feat: make wasmPath optional with smart auto-detection (#19)" (#20)

This reverts commit 59cb82f.

Author: sreya

lib/ghostty.ts

@@ -55,65 +55,40 @@ export class Ghostty {
 
   /**
    * Load Ghostty WASM from URL or file path
-   * If no path is provided, attempts to load from common default locations
    */
-  static async load(wasmPath?: string): Promise<Ghostty> {
-    // Default WASM paths to try (in order)
-    const defaultPaths = [
-      // When published as npm package
-      new URL('../ghostty-vt.wasm', import.meta.url).href,
-      // When used from CDN or local dev
-      './ghostty-vt.wasm',
-      '/ghostty-vt.wasm',
-    ];
-
-    const pathsToTry = wasmPath ? [wasmPath] : defaultPaths;
-    let lastError: Error | null = null;
-
-    for (const path of pathsToTry) {
-      try {
-        let wasmBytes: ArrayBuffer;
-
-        // Try loading as file first (for Node/Bun environments)
-        try {
-          const fs = await import('fs/promises');
-          const buffer = await fs.readFile(path);
-          wasmBytes = buffer.buffer.slice(buffer.byteOffset, buffer.byteOffset + buffer.byteLength);
-        } catch (e) {
-          // Fall back to fetch (for browser environments)
-          const response = await fetch(path);
-          if (!response.ok) {
-            throw new Error(`Failed to fetch WASM: ${response.status} ${response.statusText}`);
-          }
-          wasmBytes = await response.arrayBuffer();
-          if (wasmBytes.byteLength === 0) {
-            throw new Error(`WASM file is empty (0 bytes). Check path: ${path}`);
-          }
-        }
-
-        // Successfully loaded, instantiate and return
-        const wasmModule = await WebAssembly.instantiate(wasmBytes, {
-          env: {
-            // Stub out C runtime functions (not used by libghostty-vt)
-          },
-        });
+  static async load(wasmPath: string): Promise<Ghostty> {
+    let wasmBytes: ArrayBuffer;
 
-        return new Ghostty(wasmModule.instance);
-      } catch (e) {
-        lastError = e instanceof Error ? e : new Error(String(e));
-        // Try next path
-        continue;
+    // Try loading as file first (for Node/Bun environments)
+    try {
+      const fs = await import('fs/promises');
+      const buffer = await fs.readFile(wasmPath);
+      wasmBytes = buffer.buffer.slice(buffer.byteOffset, buffer.byteOffset + buffer.byteLength);
+    } catch (e) {
+      // Fall back to fetch (for browser environments)
+      const response = await fetch(wasmPath);
+      if (!response.ok) {
+        throw new Error(`Failed to fetch WASM: ${response.status} ${response.statusText}`);
+      }
+      wasmBytes = await response.arrayBuffer();
+      if (wasmBytes.byteLength === 0) {
+        throw new Error(`WASM file is empty (0 bytes). Check path: ${wasmPath}`);
       }
     }
 
-    // All paths failed
-    throw new Error(
-      `Failed to load ghostty-vt.wasm. Tried paths: ${pathsToTry.join(', ')}. ` +
-      `Last error: ${lastError?.message}. ` +
-      `You can specify a custom path with: new Terminal({ wasmPath: './path/to/ghostty-vt.wasm' })`
-    );
+    const wasmModule = await WebAssembly.instantiate(wasmBytes, {
+      env: {
+        log: (ptr: number, len: number) => {
+          const instance = (wasmModule as any).instance;
+          const bytes = new Uint8Array(instance.exports.memory.buffer, ptr, len);
+          const text = new TextDecoder().decode(bytes);
+          console.log('[ghostty-wasm]', text);
+        },
+      },
+    });
+
+    return new Ghostty(wasmModule.instance);
   }
-
 }
 
 /**

lib/input-handler.test.ts

@@ -129,8 +129,8 @@ describe('InputHandler', () => {
 
   beforeAll(async () => {
     // Load WASM once for all tests (expensive operation)
-    // wasmPath is now optional - auto-detected
-    ghostty = await Ghostty.load();
+    const wasmPath = new URL('../ghostty-vt.wasm', import.meta.url).href;
+    ghostty = await Ghostty.load(wasmPath);
   });
 
   beforeEach(() => {

lib/interfaces.ts

@@ -12,7 +12,7 @@ export interface ITerminalOptions {
   fontSize?: number; // Default: 15
   fontFamily?: string; // Default: 'monospace'
   allowTransparency?: boolean;
-  wasmPath?: string; // Optional: custom WASM path (auto-detected by default)
+  wasmPath?: string; // Default: '../ghostty-vt.wasm' (relative to examples/)
 }
 
 export interface ITheme {

lib/terminal.ts

@@ -79,7 +79,7 @@ export class Terminal implements ITerminalCore {
       fontSize: options.fontSize ?? 15,
       fontFamily: options.fontFamily ?? 'monospace',
       allowTransparency: options.allowTransparency ?? false,
-      wasmPath: options.wasmPath, // Optional - Ghostty.load() handles defaults
+      wasmPath: options.wasmPath ?? '../ghostty-vt.wasm',
     };
 
     this.cols = this.options.cols;

scripts/build-wasm.sh

@@ -21,7 +21,7 @@ echo "✓ Found Zig $ZIG_VERSION"
 GHOSTTY_DIR="/tmp/ghostty-for-wasm"
 if [ ! -d "$GHOSTTY_DIR" ]; then
     echo "📦 Cloning Ghostty..."
-    git clone --depth=1 https://github.com/coder/ghostty.git "$GHOSTTY_DIR"
+    git clone --depth=1 https://github.com/ghostty-org/ghostty.git "$GHOSTTY_DIR"
 else
     echo "📦 Updating Ghostty..."
     cd "$GHOSTTY_DIR"