static-class-sample.ts

// ClassA.ts

"use strict";

export = ClassA;

class ClassA {
  private static c: number;

  public static init(n: number) {
    if (ClassA.c !== undefined)
      throw new Error('Class already initialized');
    ClassA.c = n;
  }

  static foo(bonus: string) {
    console.log('foo', ClassA.c, bonus);
    ClassA.pfoo();
  }

  private static pfoo() {
    console.log('p coq');
  }
}

// other.ts
import ClassA = require('./ClassA');