From 32ec60ff2609906130e15622c30491c5c96dad15 Mon Sep 17 00:00:00 2001
From: Brian Vaughn <brian.david.vaughn@gmail.com>
Date: Sat, 27 May 2023 16:31:08 -0400
Subject: [PATCH] Replaced post-processing "use client" build step with Parcel
 plug-in

---
 .parcelrc                      |  6 ++++++
 package.json                   |  6 +++++-
 parcel-optimizer-use-client.js | 17 +++++++++++++++++
 pnpm-lock.yaml                 | 12 ++++++++++++
 postprocess.js                 | 13 -------------
 5 files changed, 40 insertions(+), 14 deletions(-)
 create mode 100644 .parcelrc
 create mode 100644 parcel-optimizer-use-client.js
 delete mode 100755 postprocess.js

diff --git a/.parcelrc b/.parcelrc
new file mode 100644
index 0000000..785d93d
--- /dev/null
+++ b/.parcelrc
@@ -0,0 +1,6 @@
+{
+  "extends": "@parcel/config-default",
+  "optimizers": {
+    "*.{js,mjs,cjs}": ["./parcel-optimizer-use-client.js"]
+  }
+}
\ No newline at end of file
diff --git a/package.json b/package.json
index 15a0ff6..1453dda 100644
--- a/package.json
+++ b/package.json
@@ -21,7 +21,7 @@
     "clear:builds": "rm -rf ./dist",
     "clear:parcel-cache": "rm -rf ./.parcel-cache",
     "clear:node_modules": "rm -rf ./node_modules",
-    "prerelease": "rm -rf ./.parcel-cache && parcel build && ./postprocess.js",
+    "prerelease": "rm -rf ./.parcel-cache && parcel build",
     "prettier": "prettier --write \"**/*.{css,html,js,json,jsx,ts,tsx}\"",
     "prettier:ci": "prettier --check \"**/*.{css,html,js,json,jsx,ts,tsx}\"",
     "test": "jest",
@@ -33,9 +33,13 @@
     "@babel/runtime": "^7.12.5"
   },
   "devDependencies": {
+    "@parcel/config-default": "^2.9.0",
     "@parcel/core": "^2.9.0",
     "@parcel/packager-ts": "^2.9.0",
+    "@parcel/plugin": "^2.9.0",
+    "@parcel/source-map": "^2.1.1",
     "@parcel/transformer-typescript-types": "^2.9.0",
+    "@parcel/utils": "^2.9.0",
     "@types/jest": "^26.0.15",
     "@types/react": "^18",
     "@types/react-dom": "^18",
diff --git a/parcel-optimizer-use-client.js b/parcel-optimizer-use-client.js
new file mode 100644
index 0000000..92c954b
--- /dev/null
+++ b/parcel-optimizer-use-client.js
@@ -0,0 +1,17 @@
+const { Optimizer } = require("@parcel/plugin");
+const { default: SourceMap } = require("@parcel/source-map/dist/node.js");
+const { blobToBuffer } = require("@parcel/utils");
+
+module.exports = new Optimizer({
+  async optimize({ contents, map, options }) {
+    let correctMap;
+    if (map != null) {
+      correctMap = new SourceMap(options.projectRoot);
+      correctMap.addSourceMap(map, 2); // Offset lines by 2
+    }
+    return {
+      contents: `"use client";\n\n` + (await blobToBuffer(contents)).toString(),
+      map: correctMap,
+    };
+  },
+});
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 8b4e263..1cd4094 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -6,15 +6,27 @@ dependencies:
     version: 7.21.0
 
 devDependencies:
+  '@parcel/config-default':
+    specifier: ^2.9.0
+    version: 2.9.0(@parcel/core@2.9.0)
   '@parcel/core':
     specifier: ^2.9.0
     version: 2.9.0
   '@parcel/packager-ts':
     specifier: ^2.9.0
     version: 2.9.0(@parcel/core@2.9.0)
+  '@parcel/plugin':
+    specifier: ^2.9.0
+    version: 2.9.0(@parcel/core@2.9.0)
+  '@parcel/source-map':
+    specifier: ^2.1.1
+    version: 2.1.1
   '@parcel/transformer-typescript-types':
     specifier: ^2.9.0
     version: 2.9.0(@parcel/core@2.9.0)(typescript@4.9.5)
+  '@parcel/utils':
+    specifier: ^2.9.0
+    version: 2.9.0
   '@types/jest':
     specifier: ^26.0.15
     version: 26.0.24
diff --git a/postprocess.js b/postprocess.js
deleted file mode 100755
index cbfa413..0000000
--- a/postprocess.js
+++ /dev/null
@@ -1,13 +0,0 @@
-#!/usr/bin/env node
-
-const { readFileSync, writeFileSync } = require("fs");
-const { join } = require("path");
-
-const packageString = readFileSync(join(__dirname, "package.json"), "utf8");
-const packageJSON = JSON.parse(packageString);
-
-[packageJSON.main, packageJSON.module].forEach((distPath) => {
-  const path = join(__dirname, distPath);
-  const bundleText = readFileSync(path, "utf8");
-  writeFileSync(path, `"use client";\n\n${bundleText}`);
-});