From 33058f2b292b3a581333bdfb21b8f671898c5060 Mon Sep 17 00:00:00 2001
From: Peter Bengtsson <mail@peterbe.com>
Date: Tue, 8 Dec 2020 14:40:17 -0500
Subject: initial commit

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+---
+title: Tips and Tricks
+slug: Mozilla/Add-ons/WebExtensions/Tips
+translation_of: Mozilla/Add-ons/WebExtensions/Tips
+---
+<p>{{AddonSidebar}}</p>
+
+<p>このページには開発者がWebExtensionsを開発するのに便利ないろいろなコツや技術が書かれています。</p>
+
+<h2 id="Using_advanced_JavaScript_features_from_ECMAScript_6_and_7">Using advanced JavaScript features from ECMAScript 6 and 7</h2>
+
+<p>Firefoxは<a href="/Web/JavaScript/New_in_JavaScript/ECMAScript_6_support_in_Mozilla">たくさんの独創的なECMAScript6</a>の特徴を含んでいます。いくつかの新しい、そして実験的な特徴は、デフォルトではWebやWebExtensionでは使用できません。もしあなたがこれらの機能を使いたい場合、<a href="https://babeljs.io/">Babel</a>のようなトランスパイラを使用するのがベストでしょう。</p>
+
+<p>Babelは大半のES6の特徴に対するtransformationsを提供します </p>
+
+<p>provides transformations for the vast majority of ES6 features, and enables them by default.</p>
+
+<p>Since Firefox already fully supports most of these, it's best to configure Babel to ignore them.</p>
+
+<p>私達は.babelrcファイルの作成やあなたのpackage.jsonのbabelセクションに以下の設定を含めることを提案します。</p>
+
+<pre class="brush: js">{
+  "env": {
+    "firefox": {
+      "sourceMaps": "inline",
+      "blacklist": [
+        "es5.properties.mutators",
+        "es6.arrowFunctions",
+        "es6.destructuring",
+        "es6.forOf",
+        "es6.parameters",
+        "es6.properties.computed",
+        "es6.properties.shorthand",
+        "es6.spec.symbols",
+        "es6.spread",
+        "es6.tailCall",
+        "es6.templateLiterals",
+        "es6.regex.sticky",
+        "es6.regex.unicode"
+      ]
+    }
+  }
+}
+</pre>
+
+<p>Then, to compile an individual script, simply run:</p>
+
+<pre class="brush: sh">BABEL_ENV=firefox babel &lt;filename&gt;
+</pre>
+
+<p>Or, to compile every JavaScript file under the directory <code>src</code> and place the compiled files in <code>compiled</code>, copying over non-JavaScript files in the process, run:</p>
+
+<pre class="brush: sh">BABEL_ENV=firefox babel -Dd compiled src
+</pre>
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