RPC types not working well inside a monorepo

I have a monorepo setup with

packages/api

packages/api

for my hono api and

app/www

app/www

for the client code. I have set up rpc well but i am getting

Type instantiation is excessively deep and possibly infinite.ts

Type instantiation is excessively deep and possibly infinite.ts

. I have tried the following
- I have set

strict

strict

to true on both my api and client package
- have set

composite

composite

true in my api package and set path reference in my client package.

The above two helped to infer the types in the client from unknown to actual types but now its giving the type instantiation error.

Also my routes are chained and splitted accordingly like this

const routes = [
  products,
  prices,
  discounts,
  customers,
  addresses,
  subscriptions,
  transactions,
  keys,
  // checkout,
] as const;


routes.forEach((route) => {
  app.route("/", route);
});
export type AppType = (typeof routes)[number];

const routes = [
  products,
  prices,
  discounts,
  customers,
  addresses,
  subscriptions,
  transactions,
  keys,
  // checkout,
] as const;


routes.forEach((route) => {
  app.route("/", route);
});
export type AppType = (typeof routes)[number];

now getting the type error here

import app, { type AppType } from "@repo/api";
import { hc } from "hono/client";
const client = hc<AppType>("");
                   //^? type error happens here

import app, { type AppType } from "@repo/api";
import { hc } from "hono/client";
const client = hc<AppType>("");
                   //^? type error happens here

Hono•12mo ago•

114 replies

Tony

RPC types not working well inside a monorepo

I have a monorepo setup with

packages/api

packages/api

for my hono api and

app/www

app/www

for the client code. I have set up rpc well but i am getting

Type instantiation is excessively deep and possibly infinite.ts

Type instantiation is excessively deep and possibly infinite.ts

. I have tried the following
- I have set

strict

strict

to true on both my api and client package
- have set

composite

composite

const routes = [
  products,
  prices,
  discounts,
  customers,
  addresses,
  subscriptions,
  transactions,
  keys,
  // checkout,
] as const;


routes.forEach((route) => {
  app.route("/", route);
});
export type AppType = (typeof routes)[number];

const routes = [
  products,
  prices,
  discounts,
  customers,
  addresses,
  subscriptions,
  transactions,
  keys,
  // checkout,
] as const;


routes.forEach((route) => {
  app.route("/", route);
});
export type AppType = (typeof routes)[number];

now getting the type error here

import app, { type AppType } from "@repo/api";
import { hc } from "hono/client";
const client = hc<AppType>("");
                   //^? type error happens here

import app, { type AppType } from "@repo/api";
import { hc } from "hono/client";
const client = hc<AppType>("");
                   //^? type error happens here

RPC types not working well inside a monorepo

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