Metadata Reflection Demo

main.ts

/**
 * Metadata Reflection Demo by https://github.com/ludndev
 */

const reportClass: any[] = []

function report(constructor: Function) {
    reportClass.push(constructor.name)
}

@report
class MathematicsReportClass {
  type = "report";
  title: string;
 
  constructor(t: string) {
    this.title = t;
  }
}

@report
class BiologyReportClass {
  type = "report";
  title: string;
 
  constructor(t: string) {
    this.title = t;
  }
}

console.log('All report classes', reportClass);

Run here :

https://www.typescriptlang.org/play/?#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