Having issues with property decorators #1219

arimus · 2024-09-20T05:11:49Z

arimus
Sep 20, 2024

I'm having an issue where it seems the decorator is called when the class is initiated, but any object property defines, etc. all seem to be ignored / value never set, or getters never executed. Everything works property with tsc compilation, but not with tsup. I do have @swc/core installed.

Any thoughts?

tsconfig.json

{
  "compilerOptions": {
    "rootDir": "src",
    "outDir": "dist",
    "target": "ES2022",
    "module": "ESNext",
    "types": ["reflect-metadata", "mocha", "node"],
    "lib": ["ES2022", "dom"],
    "moduleResolution": "node",
    "declaration": true,
    "declarationMap": true,
    "sourceMap": true,
    "strict": true,
    "pretty": true,
    "importHelpers": true,
    "allowJs": true,
    "composite": false,
    "experimentalDecorators": true,
    "emitDecoratorMetadata": true,
    "useDefineForClassFields": true,
    "esModuleInterop": true,
    "isolatedModules": true,
    "skipLibCheck": false,
    "resolveJsonModule": true,
    "forceConsistentCasingInFileNames": true,
    "allowSyntheticDefaultImports": true,
    "strictPropertyInitialization": false,
    "noImplicitAny": false,
    "noImplicitThis": false,
    "strictNullChecks": false,
    "useUnknownInCatchVariables": false,
    "alwaysStrict": true
  },
  "include": ["src/**/*.ts", "test/**/*.ts"],
  "exclude": ["coverage", "node_modules", "dist"]

}

tsup.config.ts

import { defineConfig } from 'tsup';

export default defineConfig({
  entry: ['src/index.ts'],
  format: ['cjs'],
  dts: true, // Generates TypeScript declaration files
  sourcemap: true,
  clean: true,
  tsconfig: './tsconfig.json', // Make sure this points to the right tsconfig
  esbuildOptions(options) {
    options.tsconfig = 'tsconfig.json'; // Ensure tsconfig is respected
    options.target = 'es2022'; // Target ES2020 or your preferred version
    options.platform = 'node';
  },
});

matheusantoni0 · 2025-03-28T21:14:01Z

matheusantoni0
Mar 28, 2025

I'm having the same problem. Did you find any solution?

1 reply

arimus Mar 28, 2025
Author

Unfortunately no, I gave up. I ended up with rollup and @rollup/plugin-typescript which works well.

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Having issues with property decorators #1219

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Having issues with property decorators #1219

arimus Sep 20, 2024

Replies: 1 comment · 1 reply

matheusantoni0 Mar 28, 2025

arimus Mar 28, 2025 Author

arimus
Sep 20, 2024

Replies: 1 comment 1 reply

matheusantoni0
Mar 28, 2025

arimus Mar 28, 2025
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