Add missing return types

src/ts/utils/utils.ts

@@ -1,5 +1,5 @@
 export const utils = {
-    consoleLog(message: string) {
+    consoleLog(message: string): void {
         /* tslint:disable */
         console.log(message);
         /* tslint:enable */

src/ts/web3_wrapper.ts

@@ -34,7 +34,7 @@ export class Web3Wrapper {
     public getCurrentProvider(): Web3.Provider {
         return this.web3.currentProvider;
     }
-    public async getNetworkIdIfExistsAsync() {
+    public async getNetworkIdIfExistsAsync(): Promise<number|undefined> {
         try {
             const networkId = await this.getNetworkAsync();
             return Number(networkId);
@@ -64,7 +64,7 @@ export class Web3Wrapper {
         const {timestamp} = await promisify(this.web3.eth.getBlock)(blockHash);
         return timestamp;
     }
-    private async getNetworkAsync() {
+    private async getNetworkAsync(): Promise<number> {
         const networkId = await promisify(this.web3.version.getNetwork)();
         return networkId;
     }

test/utils/blockchain_clean.ts

@@ -7,10 +7,10 @@ export class BlockchainClean {
         this.rpc = new RPC();
     }
     // TODO: Check if running on TestRPC or on actual node, if actual node, re-deploy contracts instead
-    public async setupAsync() {
+    public async setupAsync(): Promise<void> {
         this.snapshotId = await this.rpc.takeSnapshotAsync();
     }
-    public async restoreAsync() {
+    public async restoreAsync(): Promise<void> {
         const didRevert = await this.rpc.revertSnapshotAsync(this.snapshotId);
         if (!didRevert) {
             throw new Error(`Snapshot with id #${this.snapshotId} failed to revert`);

test/utils/rpc.ts

@@ -26,7 +26,7 @@ export class RPC {
         const didRevert = await this.sendAsync(payload);
         return didRevert;
     }
-    private toPayload(method: string, params: any[] = []) {
+    private toPayload(method: string, params: any[] = []): string {
         const payload = JSON.stringify({
             id: this.id,
             method,
@@ -35,7 +35,7 @@ export class RPC {
         this.id += 1;
         return payload;
     }
-    private async sendAsync(payload: string) {
+    private async sendAsync(payload: string): Promise<any> {
         const opts = {
             method: 'POST',
             uri: `http://${this.host}:${this.port}`,