defer initialization of the wasm module

Signed-off-by: Thomas Poignant <[email protected]>

Author: thomaspoignant

libs/providers/go-feature-flag/src/lib/evaluator/inprocess-evaluator.test.ts

@@ -7,6 +7,7 @@ import { EvaluationType } from '../model';
 // Mock the EvaluateWasm class
 jest.mock('../wasm/evaluate-wasm', () => ({
   EvaluateWasm: jest.fn().mockImplementation(() => ({
+    initialize: jest.fn().mockResolvedValue(undefined),
     evaluate: jest.fn().mockResolvedValue({
       value: true,
       reason: 'TARGETING_MATCH',

libs/providers/go-feature-flag/src/lib/evaluator/inprocess-evaluator.ts

@@ -64,8 +64,9 @@ export class InProcessEvaluator implements IEvaluator {
    * Initialize the evaluator.
    */
   async initialize(): Promise<void> {
-    await this.loadConfiguration(true);
+    await this.evaluationEngine.initialize();
 
+    await this.loadConfiguration(true);
     // Start periodic configuration polling
     if (this.options.flagChangePollingIntervalMs && this.options.flagChangePollingIntervalMs > 0) {
       this.periodicRunner = setInterval(

libs/providers/go-feature-flag/src/lib/wasm/evaluate-wasm.ts

@@ -23,17 +23,13 @@ export class EvaluateWasm {
   constructor(logger?: Logger) {
     this.logger = logger;
     this.go = new Go();
-    // Initialize WASM asynchronously
-    this.initializeWasm().catch((error) => {
-      logger?.error('Failed to initialize WASM:', error);
-    });
   }
 
   /**
    * Initializes the WASM module.
    * In a real implementation, this would load the WASM binary and instantiate it.
    */
-  private async initializeWasm(): Promise<void> {
+  public async initialize(): Promise<void> {
     try {
       // Load the WASM binary
       const wasmBuffer = await this.loadWasmBinary();
@@ -119,7 +115,7 @@ export class EvaluateWasm {
     try {
       // Ensure WASM is initialized
       if (!this.wasmExports || !this.wasmMemory) {
-        await this.initializeWasm();
+        await this.initialize();
       }
 
       // Serialize the input to JSON