class LocationOccupied extends Error {
 constructor(message: string) {
 super(`LocationOccupied(${message})`);
 }
}

class LocationOccupied extends Error {
 constructor(message: string) {
 this.message = `LocationOccupied(${message})`;
 }
}

class LocationOccupied extends Error {
 toString(): string {
 return `LocationOccupied(${this.message})`
 }
}

throw new LocationOccupied(`${x}-${y}`)

› wasmer run build/release.wasm
⠁ Compiling to WebAssembly abort: 0-0 in assembly/world.ts(107:7)
› wasmtime run build/release.wasm
abort: 0-0 in assembly/world.ts(107:7)
Error: failed to run main module `build/release.wasm`