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.github/workflows/minify.yml

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+name: Minify
+
+on:
+    push:
+        branches: [main]
+        paths:
+            - "scripts/*"
+            - ".github/workflows/minify.yml"
+
+    schedule:
+        - cron: "0 0 * * *"
+
+    workflow_dispatch:
+
+jobs:
+    psl:
+        name: PSL
+        runs-on: ubuntu-latest
+
+        steps:
+            - uses: actions/checkout@v4
+
+            - uses: actions/setup-node@v4
+              with:
+                  node-version: 20.x
+
+            - name: Download public_suffix_list.dat
+              run: curl -o public_suffix_list.dat https://publicsuffix.org/list/public_suffix_list.dat
+
+            - name: Minify PSL
+              id: minify_psl
+              run: |
+                  OUTPUT=$(node scripts/minify.js)
+                  echo "${OUTPUT}"
+                  echo "minify_percent=${OUTPUT}" >> $GITHUB_ENV
+
+            - name: Commit
+              env:
+                  MINIFY_PERCENT: ${{ env.minify_percent }}
+              run: |
+                  git config --global user.name "GitHub Actions"
+                  git config --global user.email "[email protected]"
+                  git add list/public_suffix_list.min.dat
+                  git commit -m "chore: minify PSL (saved ${MINIFY_PERCENT})"
+                  git push

.gitignore

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+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+.pnpm-debug.log*
+
+# Diagnostic reports (https://nodejs.org/api/report.html)
+report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+*.lcov
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# Snowpack dependency directory (https://snowpack.dev/)
+web_modules/
+
+# TypeScript cache
+*.tsbuildinfo
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional stylelint cache
+.stylelintcache
+
+# Microbundle cache
+.rpt2_cache/
+.rts2_cache_cjs/
+.rts2_cache_es/
+.rts2_cache_umd/
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variable files
+.env
+.env.development.local
+.env.test.local
+.env.production.local
+.env.local
+
+# parcel-bundler cache (https://parceljs.org/)
+.cache
+.parcel-cache
+
+# Next.js build output
+.next
+out
+
+# Nuxt.js build / generate output
+.nuxt
+dist
+
+# Gatsby files
+.cache/
+# Comment in the public line in if your project uses Gatsby and not Next.js
+# https://nextjs.org/blog/next-9-1#public-directory-support
+# public
+
+# vuepress build output
+.vuepress/dist
+
+# vuepress v2.x temp and cache directory
+.temp
+.cache
+
+# Docusaurus cache and generated files
+.docusaurus
+
+# Serverless directories
+.serverless/
+
+# FuseBox cache
+.fusebox/
+
+# DynamoDB Local files
+.dynamodb/
+
+# TernJS port file
+.tern-port
+
+# Stores VSCode versions used for testing VSCode extensions
+.vscode-test
+
+# yarn v2
+.yarn/cache
+.yarn/unplugged
+.yarn/build-state.yml
+.yarn/install-state.gz
+.pnp.*

README.md

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+# PSL Minified
+A project with the goal of minifying the PSL for projects that want a smaller copy of public_suffix_list.dat.
+
+**This project is NOT associated with the [Public Suffix List](https://publicsuffix.org). It is a community-run project.**
+
+> [!NOTE]
+> We do not modify the PSL in any way, we simply remove the comments from the original file. You can see the minifying script [here](scripts/minify.js).
+
+## Pulling the file
+You can pull the file from https://psl-min.hrsn.dev/list/public_suffix_list.min.dat

scripts/minify.js

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+const fs = require("fs");
+
+const file = "public_suffix_list.dat";
+
+fs.readFile(file, "utf8", (err, data) => {
+    if (err) {
+        console.error("Error reading the file:", err);
+        return;
+    }
+
+    const requiredComments = [
+        "// ===BEGIN ICANN DOMAINS===",
+        "// ===END ICANN DOMAINS===",
+        "// ===BEGIN PRIVATE DOMAINS===",
+        "// ===END PRIVATE DOMAINS==="
+    ];
+
+    const startsWithComments = ["// VERSION:", "// COMMIT:"];
+
+    // Minify the data
+    const minifiedData = data
+        .split("\n")
+        .map((line) => {
+            if (requiredComments.some((comment) => line.startsWith(comment))) {
+                return line;
+            }
+
+            if (startsWithComments.some((comment) => line.startsWith(comment))) {
+                return line;
+            }
+
+            return line.replace(/\/\/.*/, "").trim();
+        })
+        .filter((line) => line.length > 0)
+        .join("\n");
+
+    // Create the list directory if it doesn't exist
+    if (!fs.existsSync("list")) {
+        fs.mkdirSync("list");
+    }
+
+    // Write the minified data to a new file
+    fs.writeFile("list/public_suffix_list.min.dat", minifiedData, "utf8", (writeErr) => {
+        if (writeErr) {
+            console.error("Error writing the file:", writeErr);
+        } else {
+            console.log(`${((data.length - minifiedData.length / data.length) * 100).toFixed(2)}%`);
+        }
+    });
+});