algorand-ts-migration

Follow the TEALScript migration checklist: add explicit imports from @algorandfoundation/algorand-typescript, replace EventLogger with emit(), refactor inner transactions to the itxn namespace, replace sendMethodCall with arc4.abiCall, and add explicit uint64 type annotations to arithmetic operations.

Work through the 13 breaking changes: rename MutableArray to ReferenceArray, replace .copy() with clone(), remove N and NxM suffixes from ARC4 numeric types, update gtxn/itxn imports, replace BoxRef with Box<bytes>, and rename test files to .algo.(spec|test).ts.

sendMethodCall is replaced by arc4.abiCall, which accepts either a method property referencing the contract method or a type argument like typeof HelloStubbed.prototype.greet. The result is accessed via .returnValue instead of directly.

Yes, native arrays and object literals are mutable by default in 1.0, unlike the Beta where they were immutable. Use readonly modifiers or as const assertions if immutability is required.

BoxRef was removed in 1.0 and replaced with Box<bytes>. Update box creation to Box<bytes>({ key }), assign values via box.value instead of box.put(), and use .length instead of .size on extracted byte slices.