# AVM Operations

Algorand TypeScript allows you to express [every op code the AVM has available](https://dev.algorand.co/reference/algorand-teal/opcodes/), excluding those that manipulate the stack or control execution, as these would interfere with the compiler. These are all exported from the [ops module](https://dev.algorand.co/algokit/languages/typescript/lg-ops/modules/op.html). It is possible to import ops individually or via the entire namespace.

```typescript
// Import op from module root

import { assert, Contract, op } from '@algorandfoundation/algorand-typescript';

// Import whole module from ./op

import * as op2 from '@algorandfoundation/algorand-typescript/op';

// Import individual ops

import { bzero } from '@algorandfoundation/algorand-typescript/op';

class MyContract extends Contract {

test() {

const a = bzero(8).bitwiseInvert();

const b = op2.btoi(a);

assert(b === 2 ** 64 - 1);

const c = op.shr(b, 32);

assert(c === 2 ** 32 - 1);

}

}
```

## Txn, Global, and other Enums

[Section titled “Txn, Global, and other Enums”](https://dev.algorand.co/algokit/languages/typescript/lg-ops/#txn-global-and-other-enums)

Many of the AVM ops that take an enum argument have been abstracted into a static type with a property or function per enum member.

```typescript
import { Contract, Global, log, Txn } from '@algorandfoundation/algorand-typescript';

import { AppParams } from '@algorandfoundation/algorand-typescript/op';

class MyContract extends Contract {

test() {

log(Txn.sender);

log(Txn.applicationArgs(0));

log(Global.groupId);

log(Global.creatorAddress);

log(...AppParams.appAddress(123));

}

}
```