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‎.env.example

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SOLANA_URL=

‎.eslintrc.js

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module.exports = {
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parser: '@typescript-eslint/parser',
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parserOptions: {
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project: 'tsconfig.json',
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tsconfigRootDir: __dirname,
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sourceType: 'module',
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},
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plugins: ['@typescript-eslint/eslint-plugin'],
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extends: [
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'plugin:@typescript-eslint/recommended',
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'plugin:prettier/recommended',
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],
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root: true,
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env: {
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node: true,
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jest: true,
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},
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ignorePatterns: ['.eslintrc.js'],
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rules: {
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'@typescript-eslint/interface-name-prefix': 'off',
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'@typescript-eslint/explicit-function-return-type': 'off',
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'@typescript-eslint/explicit-module-boundary-types': 'off',
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'@typescript-eslint/no-explicit-any': 'off',
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},
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};

‎.gitignore

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# compiled output
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/dist
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/node_modules
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/build
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# Logs
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logs
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*.log
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npm-debug.log*
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pnpm-debug.log*
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yarn-debug.log*
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yarn-error.log*
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lerna-debug.log*
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# OS
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.DS_Store
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# Tests
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/coverage
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/.nyc_output
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# IDEs and editors
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/.idea
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.project
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.classpath
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.c9/
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*.launch
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.settings/
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*.sublime-workspace
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# IDE - VSCode
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.vscode/*
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!.vscode/settings.json
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!.vscode/tasks.json
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!.vscode/launch.json
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!.vscode/extensions.json
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# dotenv environment variable files
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.env
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.env.development.local
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.env.test.local
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.env.production.local
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.env.local
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# temp directory
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.temp
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.tmp
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# Runtime data
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pids
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*.pid
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*.seed
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*.pid.lock
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# Diagnostic reports (https://nodejs.org/api/report.html)
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report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json

‎.prettierrc

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{
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"singleQuote": true,
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"trailingComma": "all"
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}

‎README.md

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<p align="center">
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<a href="http://nestjs.com/" target="blank"><img src="https://nestjs.com/img/logo-small.svg" width="200" alt="Nest Logo" /></a>
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</p>
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[circleci-image]: https://img.shields.io/circleci/build/github/nestjs/nest/master?token=abc123def456
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[circleci-url]: https://circleci.com/gh/nestjs/nest
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<p align="center">A progressive <a href="http://nodejs.org" target="_blank">Node.js</a> framework for building efficient and scalable server-side applications.</p>
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<p align="center">
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<a href="https://www.npmjs.com/~nestjscore" target="_blank"><img src="https://img.shields.io/npm/v/@nestjs/core.svg" alt="NPM Version" /></a>
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<a href="https://www.npmjs.com/~nestjscore" target="_blank"><img src="https://img.shields.io/npm/l/@nestjs/core.svg" alt="Package License" /></a>
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<a href="https://www.npmjs.com/~nestjscore" target="_blank"><img src="https://img.shields.io/npm/dm/@nestjs/common.svg" alt="NPM Downloads" /></a>
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<a href="https://circleci.com/gh/nestjs/nest" target="_blank"><img src="https://img.shields.io/circleci/build/github/nestjs/nest/master" alt="CircleCI" /></a>
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<a href="https://coveralls.io/github/nestjs/nest?branch=master" target="_blank"><img src="https://coveralls.io/repos/github/nestjs/nest/badge.svg?branch=master#9" alt="Coverage" /></a>
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<a href="https://discord.gg/G7Qnnhy" target="_blank"><img src="https://img.shields.io/badge/discord-online-brightgreen.svg" alt="Discord"/></a>
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<a href="https://opencollective.com/nest#backer" target="_blank"><img src="https://opencollective.com/nest/backers/badge.svg" alt="Backers on Open Collective" /></a>
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<a href="https://opencollective.com/nest#sponsor" target="_blank"><img src="https://opencollective.com/nest/sponsors/badge.svg" alt="Sponsors on Open Collective" /></a>
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<a href="https://paypal.me/kamilmysliwiec" target="_blank"><img src="https://img.shields.io/badge/Donate-PayPal-ff3f59.svg"/></a>
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<a href="https://opencollective.com/nest#sponsor" target="_blank"><img src="https://img.shields.io/badge/Support%20us-Open%20Collective-41B883.svg" alt="Support us"></a>
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<a href="https://twitter.com/nestframework" target="_blank"><img src="https://img.shields.io/twitter/follow/nestframework.svg?style=social&label=Follow"></a>
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</p>
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<!--[![Backers on Open Collective](https://opencollective.com/nest/backers/badge.svg)](https://opencollective.com/nest#backer)
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[![Sponsors on Open Collective](https://opencollective.com/nest/sponsors/badge.svg)](https://opencollective.com/nest#sponsor)-->
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## Description
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[Nest](https://github.com/nestjs/nest) framework TypeScript starter repository.
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## Installation
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```bash
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$ yarn install
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```
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## Running the app
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```bash
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# development
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$ yarn run start
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# watch mode
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$ yarn run start:dev
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# production mode
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$ yarn run start:prod
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```
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## Test
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```bash
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# unit tests
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$ yarn run test
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# e2e tests
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$ yarn run test:e2e
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# test coverage
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$ yarn run test:cov
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```
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## Support
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Nest is an MIT-licensed open source project. It can grow thanks to the sponsors and support by the amazing backers. If you'd like to join them, please [read more here](https://docs.nestjs.com/support).
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## Stay in touch
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- Author - [Kamil Myśliwiec](https://kamilmysliwiec.com)
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- Website - [https://nestjs.com](https://nestjs.com/)
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- Twitter - [@nestframework](https://twitter.com/nestframework)
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## License
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Nest is [MIT licensed](LICENSE).

‎nest-cli.json

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{
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"$schema": "https://json.schemastore.org/nest-cli",
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"collection": "@nestjs/schematics",
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"sourceRoot": "src",
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"compilerOptions": {
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"deleteOutDir": true
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}
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}

‎package.json

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{
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"name": "jup-screener",
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"version": "0.0.1",
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"description": "",
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"author": "",
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"private": true,
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"license": "UNLICENSED",
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"scripts": {
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"build": "nest build",
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"format": "prettier --write \"src/**/*.ts\" \"test/**/*.ts\"",
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"start": "nest start",
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"start:dev": "nest start --watch",
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"start:debug": "nest start --debug --watch",
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"start:prod": "node dist/main",
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"lint": "eslint \"{src,apps,libs,test}/**/*.ts\" --fix",
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"test": "jest",
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"test:watch": "jest --watch",
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"test:cov": "jest --coverage",
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"test:debug": "node --inspect-brk -r tsconfig-paths/register -r ts-node/register node_modules/.bin/jest --runInBand",
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"test:e2e": "jest --config ./test/jest-e2e.json"
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},
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"dependencies": {
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"@nestjs/common": "^10.0.0",
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"@nestjs/core": "^10.0.0",
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"@nestjs/platform-express": "^10.0.0",
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"@solana/web3.js": "^1.91.8",
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"dotenv": "^16.4.5",
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"reflect-metadata": "^0.2.0",
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"rxjs": "^7.8.1"
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},
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"devDependencies": {
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"@nestjs/cli": "^10.0.0",
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"@nestjs/schematics": "^10.0.0",
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"@nestjs/testing": "^10.0.0",
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"@types/express": "^4.17.17",
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"@types/jest": "^29.5.2",
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"@types/node": "^20.3.1",
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"@types/supertest": "^6.0.0",
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"@typescript-eslint/eslint-plugin": "^6.0.0",
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"@typescript-eslint/parser": "^6.0.0",
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"eslint": "^8.42.0",
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"eslint-config-prettier": "^9.0.0",
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"eslint-plugin-prettier": "^5.0.0",
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"jest": "^29.5.0",
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"prettier": "^3.0.0",
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"source-map-support": "^0.5.21",
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"supertest": "^6.3.3",
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"ts-jest": "^29.1.0",
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"ts-loader": "^9.4.3",
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"ts-node": "^10.9.1",
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"tsconfig-paths": "^4.2.0",
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"typescript": "^5.1.3"
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},
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"jest": {
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"moduleFileExtensions": [
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"js",
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"json",
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"ts"
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],
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"rootDir": "src",
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"testRegex": ".*\\.spec\\.ts$",
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"transform": {
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"^.+\\.(t|j)s$": "ts-jest"
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},
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"collectCoverageFrom": [
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"**/*.(t|j)s"
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],
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"coverageDirectory": "../coverage",
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"testEnvironment": "node"
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}
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}

‎src/app.const.ts

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export const JUP_TOKEN = 'JUPyiwrYJFskUPiHa7hkeR8VUtAeFoSYbKedZNsDvCN';

‎src/app.controller.ts

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import { Controller, Get } from '@nestjs/common';
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import { AppService } from './app.service';
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import { JUP_TOKEN } from './app.const';
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@Controller()
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export class AppController {
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constructor(private readonly appService: AppService) {}
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@Get('/token')
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async getToken() {
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return await this.appService.getToken(JUP_TOKEN);
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}
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}

‎src/app.dto.ts

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import { LatestTx, Pair } from './app.types';
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export type ScreenerResponse = {
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schemaVersion: string;
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pairs: Pair[] | null;
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};
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export class GetTokenResponseDto {
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liquidity: number;
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latestBuyTx: LatestTx | null;
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constructor(liquidity: number, latestBuyTx: LatestTx | null) {
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this.liquidity = liquidity;
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this.latestBuyTx = latestBuyTx;
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}
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}

‎src/app.errors.ts

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export class FailedToFetchTokenError extends Error {
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constructor(token: string, reason: string) {
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super(`Failed to fetch token ${token} because ${reason}`);
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}
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}

‎src/app.module.ts

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import { Module } from '@nestjs/common';
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import { AppController } from './app.controller';
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import { AppService } from './app.service';
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@Module({
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imports: [],
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controllers: [AppController],
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providers: [AppService],
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})
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export class AppModule {}

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