Control wasm initialization via initWasm: false flag (#2076)

packages/api/src/base/Init.ts

@@ -217,7 +217,9 @@ export default abstract class Init<ApiType extends ApiTypes> extends Decorate<Ap
     try {
       const [hasMeta, cryptoReady] = await Promise.all([
         this.loadMeta(),
-        cryptoWaitReady()
+        this._options.initWasm === false
+          ? Promise.resolve(true)
+          : cryptoWaitReady()
       ]);
 
       if (hasMeta && !this._isReady && cryptoReady) {

packages/api/src/types/index.ts

@@ -33,6 +33,10 @@ export interface ApiOptions extends RegisteredTypes {
    * @description Add custom derives to be injected
    */
   derives?: DeriveCustom;
+  /**
+   * @description Control the initialization of the wasm libraries. When not specified, it defaults to `true`, initializing the wasm libraries, set to `false` to not initialize wasm. (No sr25519 support)
+   */
+  initWasm?: boolean;
   /**
    * @description pre-bundles is a map of 'genesis hash and runtime spec version' as key to a metadata hex string
    * if genesis hash and runtime spec version matches, then use metadata, else fetch it from chain