mempool/backend/package.json

{
  "name": "mempool-backend",
  "version": "2.5.0-dev",
  "description": "Bitcoin mempool visualizer and blockchain explorer backend",
  "license": "GNU Affero General Public License v3.0",
  "homepage": "https://mempool.space",
  "repository": {
    "type": "git",
    "url": "git+https://github.com/mempool/mempool"
  },
  "bugs": {
    "url": "https://github.com/mempool/mempool/issues"
  },
  "keywords": [
    "bitcoin",
    "mempool",
    "blockchain",
    "explorer",
    "liquid",
    "lightning"
  ],
  "main": "index.ts",
  "scripts": {
    "tsc": "./node_modules/typescript/bin/tsc -p tsconfig.build.json",
    "build": "npm run tsc && npm run create-resources",
    "create-resources": "cp ./src/tasks/price-feeds/mtgox-weekly.json ./dist/tasks && node dist/api/fetch-version.js",
    "package": "npm run build && rm -rf package && mv dist package && mv node_modules package && npm run package-rm-build-deps",
    "package-rm-build-deps": "(cd package/node_modules; rm -r typescript @typescript-eslint)",
    "start": "node --max-old-space-size=2048 dist/index.js",
    "start-production": "node --max-old-space-size=4096 dist/index.js",
    "test": "./node_modules/.bin/jest --coverage",
    "lint": "./node_modules/.bin/eslint . --ext .ts",
    "lint:fix": "./node_modules/.bin/eslint . --ext .ts --fix",
    "prettier": "./node_modules/.bin/prettier --write \"src/**/*.{js,ts}\""
  },
  "dependencies": {
    "@babel/core": "^7.20.12",
    "@mempool/electrum-client": "^1.1.7",
    "@types/node": "^16.18.11",
    "axios": "~0.27.2",
    "bitcoinjs-lib": "~6.1.0",
    "crypto-js": "~4.1.1",
    "express": "~4.18.2",
    "maxmind": "~4.3.8",
    "mysql2": "~2.3.3",
    "node-worker-threads-pool": "~1.5.1",
    "socks-proxy-agent": "~7.0.0",
    "typescript": "~4.7.4",
    "ws": "~8.11.0"
  },
  "devDependencies": {
    "@babel/core": "^7.20.7",
    "@babel/code-frame": "^7.18.6",
    "@types/compression": "^1.7.2",
    "@types/crypto-js": "^4.1.1",
    "@types/express": "^4.17.15",
    "@types/jest": "^29.2.5",
    "@types/ws": "~8.5.4",
    "@typescript-eslint/eslint-plugin": "^5.48.1",
    "@typescript-eslint/parser": "^5.48.1",
    "eslint": "^8.31.0",
    "eslint-config-prettier": "^8.5.0",
    "jest": "^29.3.1",
    "prettier": "^2.8.2",
    "ts-jest": "^29.0.3",
    "ts-node": "^10.9.1"
  }
}
Initial code commit. 2019-07-21 17:59:47 +03:00			`{`
Update package.json for mempool-backend 2020-03-13 19:44:56 +09:00			`"name": "mempool-backend",`
Bump version to v2.5.0-dev 2022-07-10 14:53:18 +02:00			`"version": "2.5.0-dev",`
Update package.json for mempool-backend 2020-03-13 19:44:56 +09:00			`"description": "Bitcoin mempool visualizer and blockchain explorer backend",`
Update package.json license tags 2021-03-18 16:29:11 +09:00			`"license": "GNU Affero General Public License v3.0",`
Update package.json for mempool-backend 2020-03-13 19:44:56 +09:00			`"homepage": "https://mempool.space",`
			`"repository": {`
			`"type": "git",`
Add new package.json for top-level mempool project 2020-03-13 19:51:25 +09:00			`"url": "git+https://github.com/mempool/mempool"`
Update package.json for mempool-backend 2020-03-13 19:44:56 +09:00			`},`
			`"bugs": {`
			`"url": "https://github.com/mempool/mempool/issues"`
			`},`
			`"keywords": [`
			`"bitcoin",`
			`"mempool",`
			`"blockchain",`
			`"explorer",`
use lnd rest api 2022-07-29 20:53:19 +02:00			`"liquid",`
			`"lightning"`
Update package.json for mempool-backend 2020-03-13 19:44:56 +09:00			`],`
Initial code commit. 2019-07-21 17:59:47 +03:00			`"main": "index.ts",`
			`"scripts": {`
Add Jest to support backend unit tests 2022-07-07 12:21:30 -07:00			`"tsc": "./node_modules/typescript/bin/tsc -p tsconfig.build.json",`
backend: Fetch package version at build time Extract `fetch-version.ts` which is called at build time to create file `dist/api/version.json`. This file is read by `backend-info.ts` at runtime. This also fixes handing over the Git commit hash to the backend app in the Docker backend image, which was broken as of 2022-07-12. (Reason: The commit hash was previously required at runtime, but was only provided at build time.) 2022-07-13 12:44:32 +02:00			`"build": "npm run tsc && npm run create-resources",`
			`"create-resources": "cp ./src/tasks/price-feeds/mtgox-weekly.json ./dist/tasks && node dist/api/fetch-version.js",`
backend: Create npm script `package` This script creates a directory `backend/package` which only contains the files required by the backend at runtime: - The contents of `dist` - `node_modules` minus `typescript` and `@typescript-eslint`. These packages are build-only and are larger than the remaining whole package. By using only `backend/package` in the Docker image, the backend content size in the image is decreased by 70% to 31M. This, along with the improved copying in the Dockerfile, reduces the backend image size by 44% to 200M. (Step `RUN chown -R 1000:1000 /backend ...` created a layer that effectively duplicated the backend.) 2022-07-13 12:44:33 +02:00			`"package": "npm run build && rm -rf package && mv dist package && mv node_modules package && npm run package-rm-build-deps",`
			`"package-rm-build-deps": "(cd package/node_modules; rm -r typescript @typescript-eslint)",`
Reduce backend heap size setting to 2G since cache memory usage was optimized (#345) On powerful servers, nodejs automatically sets the limit at 4GB ``` % node -e 'console.log(`node heap limit = ${require("v8").getHeapStatistics().heap_size_limit / (1024 * 1024)} Mb`)' node heap limit = 4144 Mb ``` On a Raspberry Pi with 8GB RAM, nodejs automatically sets the limit at 1GB ``` % node -e 'console.log(`node heap limit = ${require("v8").getHeapStatistics().heap_size_limit / (1024 * 1024)} Mb`)' node heap limit = 1048 Mb ``` On a Raspberry Pi with 4GB RAM, nodejs automatically sets the limit at 740MB ``` % node -e 'console.log(`node heap limit = ${require("v8").getHeapStatistics().heap_size_limit / (1024 * 1024)} Mb`)' node heap limit = 739.4694900512695 Mb ``` After testing with manually setting the limit to 768MB, mempool starts up fine, but crashes when saving the cache when the mempool is quite large (over 400MB with custom bitcoin.conf setting). So it's probably safe to reduce the 4GB limit setting to 2GB for all devices and and just use the automatically set values, now that the backend's disk cache memory usage was recently optimized. However, a new npm script for `npm run start-production` will be added so we can keep our production mempool.space servers running with a very large bitcoin.conf mempool 2021-02-15 00:25:29 +09:00			`"start": "node --max-old-space-size=2048 dist/index.js",`
			`"start-production": "node --max-old-space-size=4096 dist/index.js",`
Add Jest to support backend unit tests 2022-07-07 12:21:30 -07:00			`"test": "./node_modules/.bin/jest --coverage",`
Use absolute paths when running eslint 2022-07-05 04:31:10 -07:00			`"lint": "./node_modules/.bin/eslint . --ext .ts",`
Add editorconfig and prettier integration with eslint 2022-07-07 03:02:02 -07:00			`"lint:fix": "./node_modules/.bin/eslint . --ext .ts --fix",`
			`"prettier": "./node_modules/.bin/prettier --write \"src/*/.{js,ts}\""`
Initial code commit. 2019-07-21 17:59:47 +03:00			`},`
			`"dependencies": {`
Updating patch releases 2023-01-13 13:16:50 +04:00			`"@babel/core": "^7.20.12",`
Switching Electrum Client lib supporting auto reconnect. 2020-12-29 00:41:02 +07:00			`"@mempool/electrum-client": "^1.1.7",`
Updating dependencies to please dependabot 2022-12-29 15:07:34 +04:00			`"@types/node": "^16.18.11",`
Downgrading axios to latest 0.27.x release 2022-12-01 16:15:19 +09:00			`"axios": "~0.27.2",`
Updating dependencies to please dependabot 2022-12-29 15:07:34 +04:00			`"bitcoinjs-lib": "~6.1.0",`
Update backend npm modules 2022-12-01 14:24:41 +09:00			`"crypto-js": "~4.1.1",`
			`"express": "~4.18.2",`
			`"maxmind": "~4.3.8",`
			`"mysql2": "~2.3.3",`
			`"node-worker-threads-pool": "~1.5.1",`
Upgrade packages - backend 2022-06-26 11:43:27 +02:00			`"socks-proxy-agent": "~7.0.0",`
			`"typescript": "~4.7.4",`
Update backend npm modules 2022-12-01 14:24:41 +09:00			`"ws": "~8.11.0"`
Initial code commit. 2019-07-21 17:59:47 +03:00			`},`
			`"devDependencies": {`
Updating dependencies to please dependabot 2022-12-29 15:07:34 +04:00			`"@babel/core": "^7.20.7",`
Fix backend dependencies again 2022-07-07 12:38:50 -07:00			`"@babel/code-frame": "^7.18.6",`
Upgrading npm packages and 2022-04-28 14:37:58 +04:00			`"@types/compression": "^1.7.2",`
Add types for cryptojs 2022-07-06 12:25:30 -07:00			`"@types/crypto-js": "^4.1.1",`
Updating dependencies to please dependabot 2022-12-29 15:07:34 +04:00			`"@types/express": "^4.17.15",`
Updating patch releases 2023-01-13 13:16:50 +04:00			`"@types/jest": "^29.2.5",`
Updating dependencies to please dependabot 2022-12-29 15:07:34 +04:00			`"@types/ws": "~8.5.4",`
Updating patch releases 2023-01-13 13:16:50 +04:00			`"@typescript-eslint/eslint-plugin": "^5.48.1",`
			`"@typescript-eslint/parser": "^5.48.1",`
			`"eslint": "^8.31.0",`
Add editorconfig and prettier integration with eslint 2022-07-07 03:02:02 -07:00			`"eslint-config-prettier": "^8.5.0",`
Update backend npm modules 2022-12-01 14:24:41 +09:00			`"jest": "^29.3.1",`
Updating patch releases 2023-01-13 13:16:50 +04:00			`"prettier": "^2.8.2",`
Update backend npm modules 2022-12-01 14:24:41 +09:00			`"ts-jest": "^29.0.3",`
			`"ts-node": "^10.9.1"`
Initial code commit. 2019-07-21 17:59:47 +03:00			`}`
			`}`