Closed
Description
Description
Following instructions for Express on README.md code fails with: TypeError: Reflect.getMetadata is not a function
Minimal code-snippet showcasing the problem
Simply type the first example in the README of this repo (UserController.ts & app.ts).
Expected behavior
Expecting the example to work.
Actual behavior
Fails to start:
% yarn build (runs tsc on the two .ts files)
% yarn start
:
:
/Users/ptorelli/study/routing-controller-study/node_modules/routing-controllers/cjs/metadata/ParamMetadata.js:36
const ParamTypes = Reflect.getMetadata('design:paramtypes', args.object, args.method);
^
TypeError: Reflect.getMetadata is not a function
at new ParamMetadata (/Users/ptorelli/study/routing-controller-study/node_modules/routing-controllers/cjs/metadata/ParamMetadata.js:36:40)
at /Users/ptorelli/study/routing-controller-study/node_modules/routing-controllers/cjs/metadata-builder/MetadataBuilder.js:111:31
at Array.map (<anonymous>)
at MetadataBuilder.createParams (/Users/ptorelli/study/routing-controller-study/node_modules/routing-controllers/cjs/metadata-builder/MetadataBuilder.js:111:14)
at /Users/ptorelli/study/routing-controller-study/node_modules/routing-controllers/cjs/metadata-builder/MetadataBuilder.js:98:34
at Array.map (<anonymous>)
at MetadataBuilder.createActions (/Users/ptorelli/study/routing-controller-study/node_modules/routing-controllers/cjs/metadata-builder/MetadataBuilder.js:95:34)
at /Users/ptorelli/study/routing-controller-study/node_modules/routing-controllers/cjs/metadata-builder/MetadataBuilder.js:75:39
at Array.map (<anonymous>)
:
:
My package.json:
% cat package.json
{
"name": "routing-controller-study",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"build": "tsc",
"start": "node ./dist/app.js"
},
"keywords": [],
"author": "",
"license": "ISC",
"dependencies": {
"body-parser": "^1.19.0",
"class-transformer": "0.3.1",
"class-validator": "0.12.2",
"express": "^4.17.1",
"multer": "^1.4.3",
"reflect-metadata": "^0.1.13",
"routing-controllers": "^0.9.0"
},
"devDependencies": {
"@types/body-parser": "^1.19.1",
"@types/express": "^4.17.13",
"@types/multer": "^1.4.7",
"typescript": "^4.4.4"
}
}
And tsconfig.json:
{
"exclude": [ "node_modules", "dist" ],
"include": [ "src/**/*" ],
"compilerOptions": {
"target": "es2019",
"experimentalDecorators": true,
"emitDecoratorMetadata": true,
"module": "commonjs",
"moduleResolution": "node",
"outDir": "./dist",
}
}