chore: bump TypeScript to ^5.3.0, enable ES2020/BigInt & fix tests

[kvelkov]

This PR rebases local changes onto upstream main and contains:

• Bumped TypeScript to ^5.3.0 and added resolution for @solana/web3.js to dedupe types
• Enabled ES2020 target and es2020.bigint lib to support native BigInt in tests
• Fixed test imports and resolved merge conflicts in tests/addLiquidity.test.ts
• Minor cleanup and dependency adjustments

Please review — these changes are needed so tsc and tests run cleanly with native BigInt support and consistent web3 types.

[Copilot]

Pull request overview

This PR upgrades the TypeScript toolchain and dependencies to enable native BigInt support in tests. It updates TypeScript from v4 to v5.3+, configures ES2020 target with BigInt library support, and bumps Anchor framework dependencies from v0.29 to v0.31. The changes include test import reorganization to fix merge conflicts and module structure improvements.

Key changes:

• TypeScript upgraded to ^5.3.0 with ES2020/BigInt support in tsconfig.json
• Anchor framework and related packages bumped to v0.31.x with @solana/web3.js pinned to 1.98.0 via resolutions
• Test imports reorganized to resolve duplicate exports (getCpAmmProgramErrorCodeHexString moved to cpAmm.ts)

Reviewed changes

Copilot reviewed 6 out of 8 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
yarn.lock	Updated dependency lockfile reflecting TypeScript 5.9.3, Anchor 0.31.1, @solana/spl-token 0.4.14, and removed transitive dependencies (crypto-hash, snake-case, etc.)
tsconfig.json	Configured ES2020 target with es2020.bigint lib for native BigInt support; added skipLibCheck; reformatted arrays
package.json	Updated TypeScript to ^5.3.0, @coral-xyz/anchor to ^0.31.0, @solana/web3.js to ^1.98.0; added resolutions for web3.js deduplication
tests/rateLimiter.test.ts	Fixed import by moving getCpAmmProgramErrorCodeHexString to separate import from ./bankrun-utils index
tests/addLiquidity.test.ts	Reorganized imports: moved BanksClient import up with ProgramTestContext, reordered utility imports from common.ts before bankrun-utils index
tests/bankrun-utils/common.ts	Removed getCpAmmProgramErrorCodeHexString function (moved to cpAmm.ts to avoid duplicate exports); added comment explaining the move
programs/cp-amm/src/tests/mod.rs	Added new test module extract_vectors to test module declarations
programs/cp-amm/src/tests/extract_vectors.rs	New Rust test file that extracts and prints reserve calculation vectors for various liquidity scenarios

Comments suppressed due to low confidence (1)

tests/addLiquidity.test.ts:2

• Unused import BanksClient.

import { BanksClient, ProgramTestContext } from "solana-bankrun";

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

You can also share your feedback on Copilot code review for a chance to win a $100 gift card. Take the survey.

[Copilot]

The @coral-xyz/anchor-errors version constraint ^0.30.1 is inconsistent with the upgraded @coral-xyz/anchor version ^0.31.0, which depends on @coral-xyz/anchor-errors@^0.31.1. While yarn's lockfile will resolve this to 0.31.1 (as seen in yarn.lock), it's better to keep the version constraint in package.json aligned with the main dependency to avoid confusion. Consider updating this to ^0.31.1.

Suggested change

	"@coral-xyz/anchor-errors": "^0.30.1",
	"@coral-xyz/anchor-errors": "^0.31.1",

[Copilot]

The BanksClient import is unused. It's only accessed via context.banksClient and there are no type annotations using BanksClient directly in this file. Consider removing it from the import statement.

Suggested change

	import { BanksClient, ProgramTestContext } from "solana-bankrun";
	import { ProgramTestContext } from "solana-bankrun";