create project

.gitignore

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+dist

Makefile

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+.PHONY: build
+build: dist/web-ext.zip
+
+dist/web-ext.zip:
+	mkdir -p "$(dir $@)"
+	cd src \
+	; zip -r "$(abspath $@)" .

README.md

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+# Piped Redirection
+
+YouTube から piped.video にリダイレクトする拡張機能
+
+## License
+
+MIT

src/content.js

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+"use strict";
+
+location.hostname = "piped.video";

src/manifest.json

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+{
+  "manifest_version": 3,
+  "name": "Piped Redirection",
+  "version": "0.0.0",
+  "content_scripts": [
+    {
+      "matches": ["https://www.youtube.com/*"],
+      "js": ["content.js"]
+    }
+  ]
+}