HooksLib.ts

@external("env", "_g")
export declare function _g(id: i32, maxiter: i32): i64

@external("env", "accept")
export declare function accept(read_ptr: string, read_len: i32, err: i64): i64

@external("env", "trace")
export declare function TRACE(mread_ptr: string, mread_len: i32, dread_ptr: string, dread_len: i32, as_hex: i32): i64

////////////////////////

function LOG (text: string): void {
  TRACE(text, text.length * 2, text, text.length * 2, 0)
}

export function hook(reserved: i32 = 0): i64 {
    LOG("Accept.c: Called.");
    accept('', 0, 0); 

    _g(1,1);   // every hook needs to import guard function and use it at least once
    // unreachable
    return 0;
}

module.ts

import {GUARD, LOG, OK} from './HooksLib'

export function cbak(reserved: i32 = 0): i64 {
  return 0
}

export function hook(reserved: i32 = 0): i64 {
  GUARD(1, 1)

  for (let i = 0; GUARD(10, 10), i < 3; i++) {
    LOG('-- :D --')
  }

  OK('-- :) --')

  return 0
}