在 heroku 节点上编译 ts-jest types-找不到类型定义

Question

I'm getting following error while deploying on heroku, and I'm unable to fix it.
Build on local works fine.

error TS2688: Cannot find type definition file for '@types/jest'. The file is in the program because: Entry point of type library '@types/jest' specified in compilerOptions

My tsconfig file:

 { "ts-node": { "require": ["tsconfig-paths/register"] }, "compilerOptions": { "target": "esnext", "moduleResolution": "node", "esModuleInterop": true, "module": "commonjs", "types": ["jest", "node"], "typeRoots": ["./ts-declarations", "node_modules/@types", "./src/types/global"], "sourceMap": true, "declaration": true, "inlineSources": true, "strictNullChecks": true, "strictPropertyInitialization": true, "strictFunctionTypes": true, "skipLibCheck": true, "strict": true, "outDir": "./dist", "noImplicitThis": true, "noImplicitReturns": true, "baseUrl": ".", "forceConsistentCasingInFileNames": true, "paths": { "@/*": ["./src/*"] } } }

Package.json

 "name": "tasker-server", "version": "1.0.0", "description": "", "main": "index.js", "scripts": { "test": "jest --detectOpenHandles --watchAll --verbose", "start": "nodemon -e ts,js --exec ts-node -r tsconfig-paths/register --files./app.ts", "start:prod": "node dist/app", "build": "tsc --project tsconfig.build.json && tsc-alias" }, "author": "", "license": "ISC", "dependencies": { "@types/sequelize": "^4.28.14", "bcrypt": "^5.0.1", "body-parser": "^1.20.0", "dotenv": "^16.0.1", "express": "^4.18.1", "jsonwebtoken": "^8.5.1", "mysql2": "^2.3.3", "passport": "^0.6.0", "passport-jwt": "^4.0.0", "passport-session": "^1.0.2", "sequelize": "^6.21.2" }, "devDependencies": { "@types/bcrypt": "^5.0.0", "@types/express": "^4.17.13", "@types/jest": "^28.1.6", "@types/jsonwebtoken": "^8.5.8", "@types/node": "^18.0.0", "@types/passport": "^1.0.9", "@types/passport-jwt": "^3.0.6", "@types/supertest": "^2.0.12", "babel-plugin-module-resolver": "^4.1.0", "babel-preset-typescript": "^7.0.0-alpha.19", "jest": "^28.1.1", "node-mocks-http": "^1.11.0", "nodemon": "^2.0.16", "supertest": "^6.2.3", "ts-jest": "^28.0.5", "ts-node": "^10.8.1", "tsc-alias": "^1.7.0", "tsconfig-paths": "^4.1.0", "typescript": "^4.7.4" } }

tsconfig.build only adds exclude for test files

heroku post build script "heroku-postbuild": "NPM_CONFIG_PRODUCTION=false cd client && yarn install && yarn build && cd.. && cd backend && yarn install && yarn build"

Answer 1

kindly try to change this

"types": ["jest", "node"],

to this

"types": [
      "jasmine",
      "node"
    ]

Answer 2

All of your @types are devDependencies , as they should be. That means that, by default, they are not available at runtime .

The problem is that your start script is running a development command, including nodemon instead of node , and running the uncompiled TypeScript instead of the built JavaScript.

It looks like you already have a production script called start:prod , but that's not a standard script so Heroku has no idea what it is. I suggest you simply rename that script to start and rename your existing development script to start:dev :

"start:dev": "nodemon -e ts,js --exec ts-node -r tsconfig-paths/register --files ./app.ts",
"start": "node dist/app",

Then commit and redeploy.