jeffutter Posts

jeffutter

•Created by jeffutter on 5/2/2025 in #help

Missing `init_ops_and_esm` function for extensions in rust

Hi there, I'm just getting started with Deno and trying to embed it in rust. I'm using deno_core 0.344.0 and deno_console 0.204.0. The docs for deno_console (and most docs about extensions) reference calling init_opts_and_esm like deno_console::deno_console::init_ops_and_esm() but this function doesn't seem to exist. I can't seem to find where it is defined, it's not in the deno repo or any cargo docs. I find the same on an extension that I create with extension as well. There is an init function . However, when I try to use that I get a panic like:

thread 'main' panicked at ~/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/deno_core-0.344.0/runtime/jsruntime.rs:750:9:
Failed to initialize a JsRuntime: Following modules were not evaluated; make sure they are imported from other code:
  - ext:deno_console/01_console.js

note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

thread 'main' panicked at ~/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/deno_core-0.344.0/runtime/jsruntime.rs:750:9:
Failed to initialize a JsRuntime: Following modules were not evaluated; make sure they are imported from other code:
  - ext:deno_console/01_console.js

note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

That happens before I can run any js code to import the module. Any idea what I'm doing wrong here?

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