WIP

Signed-off-by: lovesh <lovesh.bond@gmail.com>

Author: lovesh

.gitignore

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+node_modules
+yarn.lock
+.idea

package.json

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+{
+  "name": "@docknetwork/crypto-wasm-ts",
+  "version": "0.1.0",
+  "main": "src/index.ts",
+  "license": "Apache-2.0",
+  "private": false,
+  "dependencies": {
+    "@types/node": "^16.11.6",
+    "typescript": "^4.4.4"
+  },
+  "devDependencies": {
+    "ts-node": "^10.4.0"
+  }
+}

src/accumulator/IAccumulatorState.ts

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+/**
+ * Interface for accumulator state. This should be implemented by the persistence layer that stores the accumulator
+ * members. It is advised to update the state when elements are added or removed from the accumulator.
+ */
+export interface IAccumulatorState {
+    add(element: Uint8Array): Promise<void>;
+    remove(element: Uint8Array): Promise<void>;
+
+    /**
+     * Check if element is a member of the state.
+     * @param element
+     */
+    has(element: Uint8Array): Promise<boolean>;
+}
+
+/**
+ * Additional interface for universal accumulator to expose a method that allows to iterate over the
+ * accumulator members.
+ */
+export interface IUniversalAccumulatorState extends IAccumulatorState {
+    elements(): Promise<Iterable<Uint8Array>>;
+}

src/accumulator/IInitialElementsStore.ts

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+/**
+ * Interface for persistence layer storing the elements of the universal accumulator created during initialization.
+ * This persistence layer should not be modified once the accumulator is initialized. It is only read after initialization.
+ */
+export interface IInitialElementsStore {
+    add(element: Uint8Array): Promise<void>;
+    has(element: Uint8Array): Promise<boolean>;
+}