feat(cli): added support for wasm profiling builds

Use `perseus snoop wasm-build --profiling` to generate a build
compatible with `twiggy` or similar.

packages/perseus-cli/src/bin/main.rs

@@ -277,7 +277,7 @@ async fn core_watch(dir: PathBuf, opts: Opts) -> Result<i32, Error> {
         }
         Subcommand::Snoop(snoop_subcmd) => match snoop_subcmd {
             SnoopSubcommand::Build => snoop_build(dir)?,
-            SnoopSubcommand::WasmBuild => snoop_wasm_build(dir)?,
+            SnoopSubcommand::WasmBuild(snoop_wasm_opts) => snoop_wasm_build(dir, snoop_wasm_opts)?,
             SnoopSubcommand::Serve(snoop_serve_opts) => snoop_server(dir, snoop_serve_opts)?,
         },
         Subcommand::Prep => {

packages/perseus-cli/src/parse.rs

@@ -80,7 +80,7 @@ pub struct ExportOpts {
     /// The port to host your exported app on
     #[clap(long, default_value = "8080")]
     pub port: u16,
-    /// Whether or not to watch the files in your working directory for changes (exluding `target/` and `.perseus/`)
+    /// Watch the files in your working directory for changes (exluding `target/` and `.perseus/`)
     #[clap(short, long)]
     pub watch: bool,
 }
@@ -102,7 +102,7 @@ pub struct ServeOpts {
     /// The server integration to use
     #[clap(short, long, default_value = "warp")]
     pub integration: Integration,
-    /// Whether or not to watch the files in your working directory for changes (exluding `target/` and `.perseus/`)
+    /// Watch the files in your working directory for changes (exluding `target/` and `.perseus/`)
     #[clap(short, long)]
     pub watch: bool,
 }
@@ -145,11 +145,18 @@ pub enum SnoopSubcommand {
     /// Snoops on the static generation process (this will let you see `dbg!` calls and the like)
     Build,
     /// Snoops on the Wasm building process (mostly for debugging errors)
-    WasmBuild,
+    WasmBuild(SnoopWasmOpts),
     /// Snoops on the server process (run `perseus build` before this)
     Serve(SnoopServeOpts),
 }
 
+#[derive(Parser)]
+pub struct SnoopWasmOpts {
+    /// Produce a profiling build (for use with `twiggy` and the like)
+    #[clap(short, long)]
+    pub profiling: bool,
+}
+
 #[derive(Parser)]
 pub struct SnoopServeOpts {
     /// The server integration to use

packages/perseus-cli/src/snoop.rs

@@ -1,5 +1,5 @@
 use crate::errors::*;
-use crate::parse::SnoopServeOpts;
+use crate::parse::{SnoopServeOpts, SnoopWasmOpts};
 use std::env;
 use std::path::{Path, PathBuf};
 use std::process::{Command, Stdio};
@@ -48,12 +48,17 @@ pub fn snoop_build(dir: PathBuf) -> Result<i32, ExecutionError> {
 }
 
 /// Runs the commands to build the user's app to Wasm directly so they can see detailed logs.
-pub fn snoop_wasm_build(dir: PathBuf) -> Result<i32, ExecutionError> {
+pub fn snoop_wasm_build(dir: PathBuf, opts: SnoopWasmOpts) -> Result<i32, ExecutionError> {
     let target = dir.join(".perseus");
     run_cmd_directly(
         format!(
-            "{} build --target web --dev",
-            env::var("PERSEUS_WASM_PACK_PATH").unwrap_or_else(|_| "wasm-pack".to_string())
+            "{} build --target web {}",
+            env::var("PERSEUS_WASM_PACK_PATH").unwrap_or_else(|_| "wasm-pack".to_string()),
+            if opts.profiling {
+                "--profiling"
+            } else {
+                "--dev"
+            }
         ),
         &target,
     )