bonus return types

benchmark/index.ts

@@ -516,7 +516,7 @@ function write_reports_to_file(
     output_file: string,
     benchmark_results: BenchmarkResult[],
     num_benchmark_iterations: number
-) {
+): void {
     const markdown_report = create_markdown_report(
         benchmark_results,
         num_benchmark_iterations,

benchmark/markdown.ts

@@ -1655,7 +1655,7 @@ function generate_benchmarks_string(
     )}`;
 }
 
-function format_number_to_rust(number: string | number | bigint) {
+function format_number_to_rust(number: string | number | bigint): string {
     const number_is_negative = number.toString()[0] === '-';
     const number_is_decimal_less_than_one =
         (number_is_negative === false && Number(number) < 1) ||
@@ -1683,7 +1683,7 @@ function format_number_to_rust(number: string | number | bigint) {
     );
 }
 
-function format_number_to_usd(number: number) {
+function format_number_to_usd(number: number): string {
     return number.toLocaleString('en-US', {
         style: 'currency',
         currency: 'USD',

benchmark/setup.ts

@@ -1,6 +1,6 @@
 import { execSync } from 'child_process';
 
-export async function run_setup(argument?: string) {
+export async function run_setup(argument?: string): Promise<void> {
     execSync(`dfx canister create azle`, {
         stdio: 'inherit'
     });

dfx/index.ts

@@ -28,7 +28,7 @@ export function getAgentHost(): string {
         : `http://127.0.0.1:${getWebServerPort()}`;
 }
 
-export async function createAnonymousAgent() {
+export async function createAnonymousAgent(): Promise<void> {
     const agent = new HttpAgent({
         host: getAgentHost()
     });
@@ -185,7 +185,7 @@ export function addController(
     canisterName: string,
     identityName: string,
     principal: string
-) {
+): Buffer {
     const currentIdentity = whoami();
     console.info();
     console.info(`Adding ${identityName} as a controller for ${canisterName}`);

examples/apollo_server/src/index.ts

@@ -34,6 +34,17 @@ const typeDefs = `#graphql
   }
 `;
 
+type Book = {
+    id: string;
+    title: string;
+    rating: number;
+};
+
+type Author = {
+    id: string;
+    name: string;
+};
+
 let books = [
     {
         id: '0',
@@ -62,14 +73,14 @@ const authors = [
 // This resolver retrieves books from the "books" array above.
 const resolvers = {
     Query: {
-        books: () => books,
-        authors: () => authors,
-        titles: () => {
+        books: (): Book[] => books,
+        authors: (): Author[] => authors,
+        titles: (): string[] => {
             return books.map((book) => book.title);
         }
     },
     Mutation: {
-        createBook: (parent: any, args: any) => {
+        createBook: (parent: any, args: any): Book => {
             const book = {
                 id: books.length.toString(),
                 title: args.title,
@@ -83,7 +94,7 @@ const resolvers = {
     }
 };
 
-async function init() {
+async function init(): Promise<void> {
     const app = express();
 
     const server = new ApolloServer({

examples/audio_and_video/src/backend/range_response.ts

@@ -3,7 +3,7 @@ import { createReadStream, statSync } from 'fs';
 import parseRange from 'range-parser';
 
 export function rangeResponse(maxRange: number = 3_000_000) {
-    return async (req: Request, res: Response) => {
+    return async (req: Request, res: Response): Promise<void> => {
         const filePath = req.originalUrl;
         const fileLength = statSync(filePath).size;
 

examples/basic_bitcoin/test/bitcoin.ts

@@ -1,19 +1,19 @@
 import { Transaction } from 'bitcoinjs-lib';
 import { execSync } from 'child_process';
 
-export function generateToAddress(address: string, blocks: number) {
+export function generateToAddress(address: string, blocks: number): void {
     execSync(
         `.bitcoin/bin/bitcoin-cli -conf=$(pwd)/.bitcoin.conf generatetoaddress ${blocks} ${address}`
     );
 }
 
-export function generate(blocks: number) {
+export function generate(blocks: number): void {
     execSync(
         `.bitcoin/bin/bitcoin-cli -conf=$(pwd)/.bitcoin.conf -generate ${blocks}`
     );
 }
 
-export function createWallet(name: string) {
+export function createWallet(name: string): void {
     execSync(
         `.bitcoin/bin/bitcoin-cli -conf=$(pwd)/.bitcoin.conf createwallet ${name}`
     );

examples/bitcoin/test/setup.ts

@@ -68,7 +68,7 @@ export function createTransaction(from: Utxo, wallets: Wallets): string {
     return bitcoinCli.createRawTransaction(input, outputs);
 }
 
-export function signTransaction(rawTransaction: string) {
+export function signTransaction(rawTransaction: string): string {
     console.log(' - sign transaction');
     return bitcoinCli.signRawTransactionWithWallet(rawTransaction).hex;
 }

examples/bitcoin_psbt/scripts/bitcoin/transaction_count.js

@@ -1,3 +1,4 @@
+/* eslint-disable @typescript-eslint/explicit-function-return-type */
 // eslint-disable-next-line @typescript-eslint/no-var-requires
 const { execSync } = require('child_process');
 

examples/ckbtc/test/pretest.ts

@@ -15,7 +15,7 @@ function pretest(): void {
     });
 }
 
-function uninstall(...canisterNames: string[]) {
+function uninstall(...canisterNames: string[]): void {
     canisterNames.forEach((canisterName) => {
         execSync(`dfx canister uninstall-code ${canisterName} || true`, {
             stdio: 'inherit'

examples/ckbtc/wallet/backend/index.ts

@@ -211,7 +211,7 @@ function padPrincipalWithZeros(blob: blob): blob {
     return newUin8Array;
 }
 
-function setupCanisters() {
+function setupCanisters(): void {
     ckBTC = ICRC(
         Principal.fromText(
             process.env.CK_BTC_PRINCIPAL ??

examples/ckbtc/wallet/frontend/elements/ck-app.ts

@@ -35,13 +35,13 @@ export class CkApp extends LitElement {
     @state()
     transferring: boolean = false;
 
-    async connectedCallback() {
+    async connectedCallback(): Promise<void> {
         super.connectedCallback();
 
         await this.authenticate();
     }
 
-    async authenticate() {
+    async authenticate(): Promise<void> {
         const authClient = await AuthClient.create();
 
         if (await authClient.isAuthenticated()) {
@@ -62,14 +62,14 @@ export class CkApp extends LitElement {
         }
     }
 
-    initialize() {
+    initialize(): void {
         this.createWalletBackend();
 
         this.getBalance();
         this.getBitcoinDepositAddress();
     }
 
-    createWalletBackend() {
+    createWalletBackend(): void {
         const agent = new HttpAgent({
             identity: this.identity
         });
@@ -89,7 +89,7 @@ export class CkApp extends LitElement {
         this.walletBackend = walletBackend;
     }
 
-    async getBalance() {
+    async getBalance(): Promise<void> {
         if (this.walletBackend === undefined) {
             alert(`walletBackend has not been initialized`);
             return;
@@ -102,7 +102,7 @@ export class CkApp extends LitElement {
         this.balance = result;
     }
 
-    async getBitcoinDepositAddress() {
+    async getBitcoinDepositAddress(): Promise<void> {
         if (this.walletBackend === undefined) {
             alert(`walletBackend has not been initialized`);
             return;
@@ -115,7 +115,7 @@ export class CkApp extends LitElement {
         this.bitcoinDepositAddress = result;
     }
 
-    async updateBalance() {
+    async updateBalance(): Promise<void> {
         this.updatingBalance = true;
 
         if (this.walletBackend === undefined) {
@@ -132,7 +132,7 @@ export class CkApp extends LitElement {
         this.updatingBalance = false;
     }
 
-    async transfer() {
+    async transfer(): Promise<void> {
         this.transferring = true;
 
         if (this.walletBackend === undefined) {
@@ -157,7 +157,7 @@ export class CkApp extends LitElement {
         this.transferring = false;
     }
 
-    render() {
+    render(): void {
         const identityPrincipalString = this.identity
             ? this.identity.getPrincipal().toText()
             : 'Loading...';
@@ -190,14 +190,15 @@ export class CkApp extends LitElement {
                     .disabled=${this.transferring}
                     type="text"
                     .value=${this.transferTo}
-                    @input=${(e: any) => (this.transferTo = e.target.value)}
+                    @input=${(e: any): void =>
+                        (this.transferTo = e.target.value)}
                 />
                 Amount:
                 <input
                     .disabled=${this.transferring}
                     type="number"
                     .value=${this.transferAmount}
-                    @input=${(e: any) =>
+                    @input=${(e: any): void =>
                         (this.transferAmount = BigInt(e.target.value))}
                 />
                 <button

examples/composite_queries/src/canister1/index.ts

@@ -195,7 +195,7 @@ function getCanister2Principal(): string {
     throw new Error(`process.env.CANISTER2_PRINCIPAL is not defined`);
 }
 
-async function incCanister(canister: any, candidPath: string) {
+async function incCanister(canister: any, candidPath: string): Promise<any> {
     if (process.env.AZLE_TEST_FETCH === 'true') {
         const response = await fetch(
             `icp://${canister.principal.toText()}/incCounter`,
@@ -209,7 +209,7 @@ async function incCanister(canister: any, candidPath: string) {
     }
 }
 
-async function incCanister2() {
+async function incCanister2(): Promise<any> {
     if (process.env.AZLE_TEST_FETCH === 'true') {
         const response = await fetch(
             `icp://${getCanister2Principal()}/incCounter`,

examples/ethereum_json_rpc/src/index.ts

@@ -52,7 +52,10 @@ export default Canister({
     })
 });
 
-async function getBalance(url: string, ethereumAddress: string) {
+async function getBalance(
+    url: string,
+    ethereumAddress: string
+): Promise<string> {
     if (process.env.AZLE_TEST_FETCH === 'true') {
         ic.setOutgoingHttpOptions({
             maxResponseBytes: 2_000n,
@@ -108,7 +111,7 @@ async function getBalance(url: string, ethereumAddress: string) {
         return Buffer.from(httpResponse.body.buffer).toString('utf-8');
     }
 }
-async function getBlockByNumber(url: string, number: number) {
+async function getBlockByNumber(url: string, number: number): Promise<string> {
     if (process.env.AZLE_TEST_FETCH === 'true') {
         ic.setOutgoingHttpOptions({
             maxResponseBytes: 2_000n,

examples/express/src/backend/index.ts

@@ -69,7 +69,7 @@ app.use(express.static('/dist'));
 
 app.listen();
 
-function changeGlobalState(req: Request, res: Response) {
+function changeGlobalState(req: Request, res: Response): void {
     globalState = req.body;
 
     res.json(globalState);

examples/express/src/frontend/index.ts

@@ -19,7 +19,7 @@ export class AzleApp extends LitElement {
     @property()
     globalStateResponse: string = JSON.stringify({});
 
-    async testResSend() {
+    async testResSend(): Promise<void> {
         this.resSendResponse = 'Loading...';
 
         const response = await fetch(`${this.canisterOrigin}/res-send`);
@@ -28,7 +28,7 @@ export class AzleApp extends LitElement {
         this.resSendResponse = responseText;
     }
 
-    async testResWrite() {
+    async testResWrite(): Promise<void> {
         this.resWriteResponse = 'Loading...';
 
         const response = await fetch(`${this.canisterOrigin}/res-write`);
@@ -37,7 +37,7 @@ export class AzleApp extends LitElement {
         this.resWriteResponse = responseText;
     }
 
-    async testFileStream() {
+    async testFileStream(): Promise<void> {
         this.fileStreamResponse = 'Loading...';
 
         const response = await fetch(`${this.canisterOrigin}/file-stream`);
@@ -46,7 +46,7 @@ export class AzleApp extends LitElement {
         this.fileStreamResponse = responseText;
     }
 
-    async testGlobalState() {
+    async testGlobalState(): Promise<void> {
         this.globalStateResponse = 'Loading...';
 
         const response = await fetch(
@@ -64,7 +64,7 @@ export class AzleApp extends LitElement {
         this.globalStateResponse = JSON.stringify(responseJson);
     }
 
-    async deleteGlobalState() {
+    async deleteGlobalState(): Promise<void> {
         this.globalStateResponse = 'Loading...';
 
         const response = await fetch(
@@ -78,7 +78,7 @@ export class AzleApp extends LitElement {
         this.globalStateResponse = JSON.stringify(responseJson);
     }
 
-    render() {
+    render(): any {
         return html`
             <h1>Azle Express App</h1>