Javascript Anchor Types Reference

Javascript Anchor Types Reference

This reference shows you how anchor maps rust types to javascript/typescript types in the client.

Rust Type	Javascript Type	Example	Note
bool	bool	await program .methods .init(true) .rpc();
u64/u128/i64/i128	anchor.BN	await program .methods .init(new anchor.BN(99)) .rpc();	https://github.com/indutny/bn.js/
u8/u16/u32/i8/i16/i32	number	await program .methods .init(99) .rpc();
f32/f64	number	await program .methods .init(1.0) .rpc();
Option<T>	null or T	await program .methods .init(null) .rpc();
Enum	{ variantName: {} }	// Rust enum MyEnum { One, Two }; // JS await program .methods .init({ one: {} }) .rpc(); // Rust enum MyEnum { One: { val: u64 }, Two }; // JS await program .methods .init({ one: { val: 99 } }) .rpc();	No support for tuple variants
Struct	{ val: {} }	// Rust struct MyStruct { val: u64 }; // JS await program .methods .init({ val: 99 }) .rpc();	No support for tuple structs
[T; N]	[ T ]	await program .methods .init([1,2,3]) .rpc();
String	string	await program .methods .init("hello") .rpc();
Vec<T>	[ T ]	await program .methods .init([1,2,3]) .rpc();