I'm trying to use ts-transformation-keys in my Nest application.
I started a new application using a template from this repository, and my machine is running with windows 10.
As described in the ts-transformation-keys documentation, i added the following configuration in the tsconfig.json file:
{
"compilerOptions": {
"module": "commonjs",
"declaration": false,
"removeComments": true,
"emitDecoratorMetadata": true,
"experimentalDecorators": true,
"esModuleInterop": true,
"allowSyntheticDefaultImports": true,
"target": "ES2017",
"sourceMap": true,
"outDir": "./dist",
"baseUrl": "./",
"incremental": true,
"plugins": [
{ "transform": "ts-transformer-keys/transformer" },
]
},
"exclude": [
"node_modules",
"dist",
"graphql",
"onboard"
]
}
That's my package.json file:
{
"name": "nestjs-prisma-client-starter",
"version": "0.0.1",
"description": "NestJS Prisma Client Starter Project",
"author": "Marc Stammerjohann",
"license": "MIT",
"keywords": [
"NestJS",
"Prisma",
"Prisma Client",
"Typescript"
],
"repository": {
"type": "git",
"url": "https://github.com/fivethree-team/nestjs-prisma-client-example.git"
},
"bugs": {
"url": "https://github.com/fivethree-team/nestjs-prisma-client-example/issues"
},
"scripts": {
"prebuild": "rimraf dist",
"build": "nest build",
"format": "prettier --write \"src/**/*.ts\" \"test/**/*.ts\"",
"start": "nest start",
"start:dev": "nest start --watch",
"start:debug": "nest start --debug --watch",
"start:prod": "node dist/main",
"migrate:dev": "prisma migrate dev --preview-feature",
"migrate:dev:create": "prisma migrate dev --create-only --preview-feature",
"migrate:reset": "prisma migrate reset --preview-feature",
"migrate:deploy": "npx prisma migrate deploy --preview-feature",
"migrate:status": "npx prisma migrate status --preview-feature",
"migrate:resolve": "npx prisma migrate resolve --preview-feature",
"prisma:studio": "npx prisma studio",
"prisma:generate": "npx prisma generate",
"prisma:generate:watch": "npx prisma generate --watch",
"lint": "eslint \"{src,apps,libs,test}/**/*.ts\" --fix",
"test": "jest",
"test:watch": "jest --watch",
"test:cov": "jest --coverage",
"test:debug": "node --inspect-brk -r tsconfig-paths/register -r ts-node/register node_modules/.bin/jest --runInBand",
"test:e2e": "jest --config ./test/jest-e2e.json",
"start:db": "npm run migrate:up && npm run prisma:generate && npm run seed",
"seed": "ts-node prisma/seed.ts",
"postinstall": "npm run prisma:generate",
"docker:migrate": "docker-compose -f docker-compose.migrate.yml up -d",
"docker:db": "docker-compose -f docker-compose.db.yml up -d",
"docker:seed": "docker exec -it nest-api npm run seed",
"docker": "docker-compose up -d",
"docker:build": "docker-compose build"
},
"dependencies": {
"@devoxa/prisma-relay-cursor-connection": "1.1.1",
"@nestjs/common": "7.6.15",
"@nestjs/config": "0.6.3",
"@nestjs/core": "7.6.15",
"@nestjs/graphql": "7.10.3",
"@nestjs/jwt": "7.2.0",
"@nestjs/passport": "7.1.5",
"@nestjs/platform-express": "7.6.15",
"@nestjs/swagger": "4.8.0",
"@prisma/client": "2.20.1",
"apollo-server-express": "2.22.2",
"bcrypt": "5.0.1",
"class-transformer": "0.4.0",
"class-validator": "0.13.1",
"dayjs": "^1.10.4",
"graphql": "15.5.0",
"graphql-tools": "7.0.4",
"linq-es2015": "^2.5.1",
"parcel-plugin-ttypescript": "^1.0.2",
"passport": "0.4.1",
"passport-jwt": "4.0.0",
"reflect-metadata": "0.1.13",
"rxjs": "6.6.7",
"swagger-ui-express": "4.1.6"
},
"devDependencies": {
"@apollo/gateway": "0.26.0",
"@nestjs/cli": "7.6.0",
"@nestjs/testing": "7.6.15",
"@types/bcrypt": "3.0.0",
"@types/chance": "1.1.1",
"@types/express": "4.17.11",
"@types/jest": "26.0.22",
"@types/node": "14.14.37",
"@types/supertest": "^2.0.11",
"@typescript-eslint/eslint-plugin": "4.21.0",
"@typescript-eslint/parser": "4.21.0",
"chance": "1.1.7",
"eslint": "7.23.0",
"eslint-config-prettier": "8.1.0",
"eslint-plugin-prettier": "3.3.1",
"jest": "26.6.3",
"prettier": "2.2.1",
"prisma": "2.20.1",
"prisma-dbml-generator": "0.5.0",
"rimraf": "3.0.2",
"supertest": "6.1.3",
"ts-jest": "26.5.4",
"ts-loader": "8.1.0",
"ts-node": "9.1.1",
"ts-transformer-keys": "^0.4.3",
"tsconfig-paths": "3.9.0",
"ttypescript": "^1.5.12",
"typescript": "^4.2.3"
},
"jest": {
"moduleFileExtensions": [
"js",
"json",
"ts"
],
"rootDir": "src",
"testRegex": ".*\\.spec\\.ts$",
"transform": {
"^.+\\.(t|j)s$": "ts-jest"
},
"collectCoverageFrom": [
"**/*.(t|j)s"
],
"coverageDirectory": "../coverage",
"testEnvironment": "node"
}
}
So, here's the problem:
i already ran these scripts:
npm i -g @nestjs/cli
npm install
npm build
npm start:debug
All these things worked well... But when i'm trying to use the ts-transformation-keys it doesn't work.
I added this small piece of code in the src/app.module.ts:
class myTestClass
{
id : string;
name : string;
}
let test = keys<myTestClass>()
Then i got this error:
TypeError: ts_transformer_keys_1.keys is not a function
at Object.<anonymous> (C:\Repos\EDM\backend\dist\app.module.js:26:34)
at Module._compile (internal/modules/cjs/loader.js:1063:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
at Module.load (internal/modules/cjs/loader.js:928:32)
at Function.Module._load (internal/modules/cjs/loader.js:769:14)
at Module.require (internal/modules/cjs/loader.js:952:19)
at require (internal/modules/cjs/helpers.js:88:18)
at Object.<anonymous> (C:\Repos\EDM\backend\dist\main.js:7:22)
at Module._compile (internal/modules/cjs/loader.js:1063:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
It's generating this javascript code:
[...]
const ts_transformer_keys_1 = require("ts-transformer-keys");
class myTestClass {
}
let test = ts_transformer_keys_1.keys();
[...]
Does anyone know what is wrong in my configuration?
I already tried to use different versions of ts-transformation-keys, but looks like Nest is not loading the custom transform described in tsconfig.json file.
