ScriptCraft/examples/typescript/src/main/ts/src/modid/index.ts

import { BlockSettings, Identifier, Registry, BlockState, ActionResult, World, Pos, Hand, PlayerEntity, BlockItem, ItemSettings, Direction, BuiltinRegistry } from 'minecraft';

console.log('hello');

const ironBlock = BuiltinRegistry.BLOCK.get(new Identifier('minecraft:iron_block'));

class MyBlock extends CustomBlockWithEntity {
    constructor() {
        super(new BlockSettings(ironBlock.getMaterial(), ironBlock.getMaterialColor()));
    }

    onUse(world: World, blockState: BlockState, blockPos: Pos, side: Direction, player: PlayerEntity, hand: Hand): ActionResult {
        const entity = world.getCustomBlockEntity(blockPos);
        if (entity instanceof MyBlockEntity) {
            console.log('Ticks: ' + entity.ticks);
        }
        world.setBlockState(blockPos.offset(side), BlockState.getDefaultState(new Identifier('minecraft:stone')));
        return ActionResult.SUCCESS;
    }

    createBlockEntity(): CustomBlockEntity {
        return new MyBlockEntity();
    }
}

Registry.register(Registry.BLOCK, new Identifier('modid', 'my_block'), new MyBlock());
Registry.register(Registry.ITEM, new Identifier('modid', 'my_block'), new BlockItem(new Identifier('modid', 'my_block'), new ItemSettings()));