majiayu000/claude-arsenal
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Algorand TypeScript Rules
algorand-typescript
Syntax rules and patterns for Algorand TypeScript (PuyaTs) smart contracts. Use when writing TypeScript contract code, encountering Puya compiler errors, asking about AVM types or value semantics, needing guidance on storage patterns (GlobalState, BoxMap), or asking about clone(), arrays, or inne...
SKILL.md
Full skill instructions
Algorand TypeScript Rules
Critical syntax rules for Algorand TypeScript (PuyaTs) that prevent compiler errors and runtime failures.
File Extension: Contract files must use .algo.ts extension (e.g., Counter.algo.ts).
Overview / Core Workflow
- Identify the syntax issue or pattern needed
- Apply the correct AVM-compatible pattern
- Use
clone()for complex types - Verify no union types or JavaScript
number
How to proceed
- Check the most critical rules below
- Consult detailed reference files for specific topics
- Apply the correct pattern with proper AVM types
- Build to verify:
algokit project run build
Important Rules / Guidelines
Numbers: No JavaScript number
// CORRECT
const amount: uint64 = Uint64(20)
const total: uint64 = amount + Uint64(100)
// INCORRECT - Compiler error
const amount = 20
Numeric limits: Algorand TypeScript supports integers up to 2^512. Use biguint for values exceeding uint64 (2^64 - 1).
Value Semantics: Always clone()
import { clone } from '@algorandfoundation/algorand-typescript'
const state = clone(this.appState.value) // Read: clone
const updated = clone(state) // Modify: clone
this.appState.value = clone(updated) // Write: clone
No Union Types
// CORRECT - Use boolean flags
let found = false
let foundItem: Item = { /* defaults */ }
// INCORRECT - Compiler error
let foundItem: Item | null = null
Arrays: Clone Before Iterating
// CORRECT
for (const item of clone(array)) { }
Common Variations / Edge Cases
| Topic | Rule |
|---|---|
| Numbers | Use uint64 + Uint64(), never number |
| Strings | No .length; use text !== '' for empty check |
| Storage | Clone on read AND write for complex types |
| Arrays | Clone before iterating; indices must be uint64 |
| Classes | No class properties; use module-level constants |
| Methods | Public = ABI method; private = subroutine |
References / Further Reading
Detailed rules by topic:
- Types and Values — AVM types, numbers, clone(), value semantics
- Storage — GlobalState, LocalState, BoxMap, MBR funding
- Methods and ABI — Decorators, lifecycle methods, visibility
- Transactions — Group transactions (gtxn), inner transactions (itxn)
- Full Reference Index
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