chore(es/minifier): Add scripts to extract tests automatically (#3212)

crates/swc_ecma_minifier/.gitignore

@@ -7,3 +7,6 @@ private/
 /input.js
 /output.js
 *.orig
+
+
+creduce_bug_*

crates/swc_ecma_minifier/scripts/_/reduce/compare.js

@@ -8,7 +8,7 @@ let [ast1, ast2] =
     process.argv.slice(2) // skip node executable and script filename
         .map(file => readFileSync(file, 'utf-8')) // read given files as strings
         .map(code => {
-            console.log(code);
+            // console.log(code);
             return parseModule(code)
         }); // parse into ASTs
 

crates/swc_ecma_minifier/scripts/cdnjs/download-all.sh

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+set -eu
+
+# Work in .data directory
+cd .data
+
+git clone https://github.com/cdnjs/cdnjs.git --depth 1 || true
+
+cd cdnjs

crates/swc_ecma_minifier/scripts/inputs/remove-useless.sh

@@ -0,0 +1,56 @@
+#!/usr/bin/env bash
+set -eu
+
+dir="${1-"./inputs/"}"
+
+echo "Removing useless files in $dir"
+find $dir -type f \( \
+    -name "*.html" -o \
+    -name "*.xml" -o \
+    -name "*.aac" -o \
+    -name "*.avif" -o \
+    -name "*.ogg" -o \
+    -name "*.mp3" -o \
+    -name "*.mp4" -o \
+    -name "*.wav" -o \
+    -name "*.bat" -o \
+    -name "*.cur" -o \
+    -name "*.db" -o \
+    -name "*.diff" -o \
+    -name "*.donotoptimizepng" -o \
+    -name "*.gif" -o \
+    -name "*.svg" -o \
+    -name "*.css" -o \
+    -name "*.png" -o \
+    -name "*.json" -o \
+    -name "*.woff" -o \
+    -name "*.woff2" -o \
+    -name "*.otf" -o \
+    -name "*.ttf" -o \
+    -name "*.eot" -o \
+    -name "*.flow" -o \
+    -name "*.md" -o \
+    -name "*.less" -o \
+    -name "*.sass" -o \
+    -name "*.scss" -o \
+    -name "*.ico" -o \
+    -name "*.sh" -o \
+    -name "*.jpg" -o \
+    -name "*.webp" -o \
+    -name "*.jpeg" -o \
+    -name "*.gz" -o \
+    -name "*.gzip" -o \
+    -name "*.zip" -o \
+    -name "*.woff" -o \
+    -name "*.wasm" -o \
+    -name "*.wast" -o \
+    -name "*.tsbuildinfo" \
+    \) \
+    -delete
+
+
+echo "Removing empty directories in $dir"
+
+find $dir -type d -empty -delete
+
+echo "Reducing js files in $dir"

crates/swc_ecma_minifier/scripts/reduce-all.sh

@@ -1,7 +1,20 @@
 #!/usr/bin/env bash
+#
+# Usage: ./scrtips/reduce-all.sh path/to/minifier-tasklist
+#
+# e.g:
+#   - ./scrtips/reduce-all.sh ~/projects/minifier-tasklist
+#   - ./scrtips/reduce-all.sh ~/projects/minifier-tasklist/react
+#
+# 
 set -eu
 
+dir="$1"
 
-find ./inputs/ -type f -name '*.js' -print0 | xargs -0 -I {} sh -c '\
-    echo "Processing {}"
-    ./scripts/reduce.sh {}'
+echo "Reducing javascript files in $dir"
+
+find $dir -type f -name '*.js' -print0 | xargs -0 -P 4 -I {} sh -c './scripts/reduce.sh {}' || true
+
+echo "Removing empty directories in $dir"
+
+find $dir -type d -empty -delete

crates/swc_ecma_minifier/scripts/reduce.sh

@@ -8,32 +8,38 @@ then
     exit
 fi
 
-cp $1 input.js
-
 SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
 
-# Build swc minifier
-export MINIFY=$(cargo profile bin-path --example minifier)
+echo "Reducing $1"
+ls -al $1
 
-echo "Using $MINIFY"
+# Build swc minifier
+export MINIFY=$(cargo profile bin-path --release --example minifier)
+
+wd="$(mktemp -d)"
+echo "Using $MINIFY; dir = $wd"
+
+cp $1 "$wd/input.js"
+dir="$(dirname $1)"
 
 # Verify that we can run `creduce`
 $SCRIPT_DIR/_/reduce/compare.sh
 
-creduce "$SCRIPT_DIR/_/reduce/compare.sh" input.js
+(cd $wd && creduce "$SCRIPT_DIR/_/reduce/compare.sh" "$wd/input.js")
 
-REDUCED_SIZE=$(wc -c <"input.js")
+REDUCED_SIZE=$(wc -c <"$wd/input.js")
+hash=$(sha1sum < "$wd/input.js")
+echo "Hash is $hash"
     
 echo "Reduced size is $REDUCED_SIZE bytes"
 
-if [[ "$1" == *"inputs"* && $REDUCED_SIZE -le 3 ]]; then
+if [[ $REDUCED_SIZE -le 3 ]]; then
     echo "Removing $1"
-    git rm --force $1
-    git commit -m 'Remove useless input'
-
-    find ./inputs -type d -empty -delete
-
+    rm -rf $1
     ./scripts/_/notify.sh "Removed $1"
+    (cd $dir && git commit -m "Remove a file as it didn't break anything" $1)
 else
+    # mkdir -p "$SCRIPT_DIR/../tests/compress/fixture/reduced/$hash"
+    # cp "$wd/input.js" "$SCRIPT_DIR/../tests/compress/fixture/reduced/$hash/input.js"
     ./scripts/_/notify.sh "Found errornous input"
 fi

crates/swc_ecma_minifier/tests/compress/fixture/reduced/config.json

@@ -0,0 +1,4 @@
+{
+    "defaults": true,
+    "toplevel": false
+}