No package.json generated on Apple Silicon (works on Intel)

[darknoon]

🐛 Bug description

• Following the basic tutorial for rust on wasm

Related issue filed against the tutorial https://github.com/rustwasm/book/issues/254

🤔 Expected Behavior

On M1, file hierarchy is:

~/Developer/Rust/wasm-game-of-life (master #) $ ls -l pkg
total 48
-rw-r--r--  1 andrew  staff  2170 Nov 13 15:09 README.md
-rw-r--r--  1 andrew  staff    80 Nov 15 11:39 wasm_game_of_life.d.ts
-rw-r--r--  1 andrew  staff    95 Nov 15 11:39 wasm_game_of_life.js
-rw-r--r--  1 andrew  staff   832 Nov 15 11:39 wasm_game_of_life_bg.js
-rw-r--r--  1 andrew  staff   430 Nov 15 11:39 wasm_game_of_life_bg.wasm
-rw-r--r--  1 andrew  staff   114 Nov 15 11:39 wasm_game_of_life_bg.wasm.d.ts

On Intel mac (12.1 Beta (21C5021h)), file hierarchy is:

~/Developer/Rust/wasm-game-of-life (master #) $ ls -l pkg
total 56
-rw-r--r--  1 andrew  staff  2170 Nov 15 11:12 README.md
-rw-r--r--  1 andrew  staff   360 Nov 15 11:21 package.json
-rw-r--r--  1 andrew  staff    80 Nov 15 11:21 wasm_game_of_life.d.ts
-rw-r--r--  1 andrew  staff    95 Nov 15 11:21 wasm_game_of_life.js
-rw-r--r--  1 andrew  staff   832 Nov 15 11:21 wasm_game_of_life_bg.js
-rw-r--r--  1 andrew  staff   288 Nov 15 11:21 wasm_game_of_life_bg.wasm
-rw-r--r--  1 andrew  staff   114 Nov 15 11:21 wasm_game_of_life_bg.wasm.d.ts

👟 Steps to reproduce

Follow rust tutorial https://rustwasm.github.io/book/game-of-life/hello-world.html

~/Developer/Rust/wasm-game-of-life (master #) $ wasm-pack build
[INFO]: 🎯  Checking for the Wasm target...
[INFO]: 🌀  Compiling to Wasm...
warning: function is never used: `set_panic_hook`
 --> src/utils.rs:1:8
  |
1 | pub fn set_panic_hook() {
  |        ^^^^^^^^^^^^^^
  |
  = note: `#[warn(dead_code)]` on by default

warning: `wasm-game-of-life` (lib) generated 1 warning
    Finished release [optimized] target(s) in 0.02s
[INFO]: ⬇️  Installing wasm-bindgen...
Error: no prebuilt wasm-opt binaries are available for this platform: Unrecognized target!
To disable `wasm-opt`, add `wasm-opt = false` to your package metadata in your `Cargo.toml`.

🌍 Your environment

Intel: 12.1 Beta (21C5021h) M1: 12.1 Beta (21C5031d)

Same versions installed on both intel and m1 pro machine: wasm-pack version: 0.10.1 rustc version: 1.56.1 (59eed8a2a 2021-11-01)

[darknoon]

I think this is the actual issue: https://github.com/rustwasm/wasm-pack/issues/913 ie the WASM was built but not optimized, and the process errored out before the package.json could be written.

[sassman]

@darknoon also the error message indicates that #913 is the real problem

[INFO]: ⬇️ Installing wasm-bindgen... Error: no prebuilt wasm-opt binaries are available for this platform: Unrecognized target!

[drager]

Please try out v0.12.0 from one of the following ways:

• https://github.com/rustwasm/wasm-pack/releases/tag/v0.12.0
• https://crates.io/crates/wasm-pack/0.12.0
• https://www.npmjs.com/package/wasm-pack/v/0.12.0