fix: remove async for createProgramAddress and findProgramAddress (#2… (

solana-labs#23185)

* fix: remove async for createProgramAddress and findProgramAddress (solana-labs#23184)

make sync

* test: add test to ensure backwards compatibility

web3.js/src/publickey.ts

@@ -143,10 +143,10 @@ export class PublicKey extends Struct {
    * Derive a program address from seeds and a program ID.
    */
   /* eslint-disable require-await */
-  static async createProgramAddress(
+  static createProgramAddressSync(
     seeds: Array<Buffer | Uint8Array>,
     programId: PublicKey,
-  ): Promise<PublicKey> {
+  ): PublicKey {
     let buffer = Buffer.alloc(0);
     seeds.forEach(function (seed) {
       if (seed.length > MAX_SEED_LENGTH) {
@@ -167,23 +167,35 @@ export class PublicKey extends Struct {
     return new PublicKey(publicKeyBytes);
   }
 
+  /**
+   * Async version of createProgramAddressSync
+   * For backwards compatibility
+   */
+  /* eslint-disable require-await */
+  static async createProgramAddress(
+    seeds: Array<Buffer | Uint8Array>,
+    programId: PublicKey,
+  ): Promise<PublicKey> {
+    return this.createProgramAddressSync(seeds, programId);
+  }
+
   /**
    * Find a valid program address
    *
    * Valid program addresses must fall off the ed25519 curve.  This function
    * iterates a nonce until it finds one that when combined with the seeds
    * results in a valid program address.
    */
-  static async findProgramAddress(
+  static findProgramAddressSync(
     seeds: Array<Buffer | Uint8Array>,
     programId: PublicKey,
-  ): Promise<[PublicKey, number]> {
+  ): [PublicKey, number] {
     let nonce = 255;
     let address;
     while (nonce != 0) {
       try {
         const seedsWithNonce = seeds.concat(Buffer.from([nonce]));
-        address = await this.createProgramAddress(seedsWithNonce, programId);
+        address = this.createProgramAddressSync(seedsWithNonce, programId);
       } catch (err) {
         if (err instanceof TypeError) {
           throw err;
@@ -196,6 +208,17 @@ export class PublicKey extends Struct {
     throw new Error(`Unable to find a viable program address nonce`);
   }
 
+  /**
+   * Async version of findProgramAddressSync
+   * For backwards compatibility
+   */
+  static async findProgramAddress(
+    seeds: Array<Buffer | Uint8Array>,
+    programId: PublicKey,
+  ): Promise<[PublicKey, number]> {
+    return this.findProgramAddressSync(seeds, programId);
+  }
+
   /**
    * Check that a pubkey is on the ed25519 curve.
    */

web3.js/test/publickey.test.ts

@@ -200,6 +200,12 @@ describe('PublicKey', function () {
         ),
       ).to.be.true;
     }
+
+    // Should work in promise mode, for backwards compatibility
+    PublicKey.createProgramAddress(
+      [Buffer.from('', 'utf8'), Buffer.from([1])],
+      programId,
+    ).then();
   });
 
   it('findProgramAddress', async () => {
@@ -218,6 +224,9 @@ describe('PublicKey', function () {
         ),
       ),
     ).to.be.true;
+
+    // Should work in promise mode, for backwards compatibility
+    PublicKey.findProgramAddress([Buffer.from('', 'utf8')], programId).then();
   });
 
   it('isOnCurve', () => {