Refactor the project

[volovyks]

• Project is rewritten in TS
• Added integration tests
• Added CI
• Finalized prettier setup
• Added setup instructions
• Refactored and cleaned up ENV setup
• Added load tests (Ethereum is still unstable)

Please, review, but do not merge yet, it has a lot of breaking changes. @auto-mausx, let's deploy this branch on a VM, sent traffic there, remove CloudRun deployment and merge this PR.

[Copilot]

Pull Request Overview

A comprehensive refactor migrating the project to TypeScript, adding CI, tests, and improving formatting and environment setup

• Rewrote core utilities and handlers in TypeScript, removing old JavaScript versions
• Added integration/load tests and a GitHub Actions CI pipeline
• Standardized prettier setup, updated package.json scripts, and expanded README with setup instructions

Reviewed Changes

Copilot reviewed 37 out of 37 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/utils/initNear.js	Removed legacy JavaScript NEAR initializer in favor of TS rewrite
src/utils/initEvm.ts	New TypeScript EVM initialization supporting multiple environments
src/utils/evmTransactions.ts	Refactored and typed EVM transaction helpers
src/index.ts	Main server entrypoint migrated to TS with enhanced validation
src/handlers/**/*.ts	Converted all blockchain handlers (Solana, Ethereum, NEAR) to TS
package.json	Updated scripts for build, test, and formatting; adjusted main
README.md	Expanded install, build, run, test, and environment instructions
.github/workflows/ci.yml	Added CI for build, tests, and prettier checks
.prettierignore	Ignored dist/ folder for formatting
.gitattributes	Marked dist/ files as generated
.env.example	Updated sample environment variables for new TS setup

Comments suppressed due to low confidence (6)

src/utils/initEvm.ts:45

• The error refers to evmPrivateKeyMainnet/evmPrivateKeySepolia but useEnv() returns a single evmSk. Align the environment variable names or adjust useEnv() to match.

          ? 'evmPrivateKeyMainnet' : 'evmPrivateKeySepolia'

src/utils/evmTransactions.ts:55

• Leftover debug console.log may expose sensitive data; consider removing or replacing with a proper logger at debug level.

    console.log({ rsvSignature });

src/utils/evmTransactions.ts:80

• Debug logging of the signature request could leak internal details; remove or replace with structured logging if needed.

    console.log({ signatureRequest });

src/index.ts:8

• Falling back to a hardcoded default API secret is insecure. Require API_SECRET to be explicitly set and fail startup if missing.

const API_SECRET = process.env.API_SECRET || 'default-secret-key';

src/handlers/ethereum.ts:31

• [nitpick] Use cannot instead of can not for grammatical correctness in the error message.

      `Ethereum can not be called with check=true due to long finalization time`

src/utils/initEvm.ts:7

• Consider adding unit tests for initEthereum to verify behavior across dev, testnet, and mainnet configurations.

export const initEthereum = ({

[volovyks]

Ok
@esaminu , please, review

[volovyks]

@esaminu me and @auto-mausx want to experiment with deployment, please, review, I will address all comments

[esaminu]

Tests look awesome, left some minor comments