test(es/minifier): Organize simple size tests (#5402)

crates/dbg-swc/scripts/reduce-list.sh

@@ -0,0 +1,4 @@
+#!/usr/bin/env bash
+set -eu
+
+cat list.txt | xargs -L 1 -I {} ./scripts/reduce-size.sh {}

crates/dbg-swc/src/minify/ensure_size.rs

@@ -48,7 +48,22 @@ impl EnsureSize {
             return Ok(());
         }
         for report in &results {
+            println!();
             println!("{}", report.fm.name);
+
+            if let Some(terser) = &report.terser {
+                if report.swc.mangled_size > terser.mangled_size {
+                    println!("  Mangled");
+                    println!("    swc: {} bytes", report.swc.mangled_size);
+                    println!("    terser: {} bytes", terser.mangled_size);
+                }
+
+                if report.swc.no_mangle_size > terser.no_mangle_size {
+                    println!("  No-mangle");
+                    println!("    swc: {} bytes", report.swc.no_mangle_size);
+                    println!("    terser: {} bytes", terser.no_mangle_size);
+                }
+            }
         }
 
         bail!("found some issues")

crates/swc_ecma_minifier/tests/full/size/24ba4747cd0b1c8200a359bc28b0040cc47a3f09/output.js

@@ -0,0 +1 @@
+[]({a(){window}})

crates/swc_ecma_minifier/tests/full/size/cb540d49b738ee81973607e264bc9872f88acda8/output.js

@@ -0,0 +1 @@
+[]({a(){}})