Zig JSON parse errors with line and column

const std = @import("std");

const User = struct { id: u32, name: []const u8 };

fn parseUser(a: std.mem.Allocator, text: []const u8) !User {
    var diag: std.json.Diagnostics = .{};
    const user = std.json.parseFromSliceLeaky(User, a, text, .{
        .allocate = .alloc_always,
        .diagnostics = &diag,
        .ignore_unknown_fields = true,
    }) catch |err| {
        std.log.err("invalid JSON at {d}:{d}: {s}", .{ diag.getLine(), diag.getColumn(), @errorName(err) });
        return err;
    };
    if (user.id == 0) return error.InvalidId;
    if (user.name.len == 0) return error.MissingName;
    return user;
}