# int64

The `CandidType` object `int64` corresponds to the Candid type int64, is inferred to be a TypeScript `bigint`, and will be decoded into a JavaScript BigInt at runtime.

TypeScript or JavaScript:

    import { Canister, int64, query } from 'azle';

    export default Canister({
        getInt64: query([], int64, () => {
            return 9_223_372_036_854_775_807n;
        }),
        printInt64: query([int64], int64, (int64) => {
            console.log(typeof int64);
            return int64;
        })
    });

Candid:

    service : () -> {
        getInt64 : () -> (int64) query;
        printInt64 : (int64) -> (int64) query;
    }

dfx:

    dfx canister call candid_canister printInt64 '(9_223_372_036_854_775_807 : int64)'
    (9_223_372_036_854_775_807 : int64)