- First commit, just began working on it

LICENSE

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+The MIT License (MIT)
+
+Copyright (c) 2023 Dave Mc Nicoll
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

composer.json

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+{
+    "name": "mcnd/picea-asset",
+    "description": "An asset manager working with ES6 'importmap'",
+    "type": "library",
+    "license": "MIT",
+    "authors": [
+        {
+            "name": "Dave Mc Nicoll",
+            "email": "info@mcnd.ca"
+        }
+    ],
+    "require": {
+        "mcnd/picea": "dev-master"
+    },
+    "repositories": [
+        {
+            "type": "vcs",
+            "url": "https://github.com/mcNdave/picea.git"
+        }
+    ],
+    "autoload": {
+        "psr-4": {
+            "Picea\\Asset\\": "src/"
+        }
+    }
+}

src/Asset.php

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+<?php
+
+namespace Picea\Asset;
+
+use Picea\Compiler;
+
+class Asset {
+
+    public function registerExtension(Compiler $compiler) : self
+    {
+        $compiler->registerExtension(new Extension\ImportmapExtension());
+
+        return $this;
+    }
+}

src/Connector/Npm.php

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+<?php
+
+namespace Picea\Asset\Connector;
+
+class Npm
+{
+    # @todo
+}

src/Extension/ImportmapExtension.php

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+<?php
+
+namespace Picea\Asset\Extension;
+
+use Picea\Compiler\Context;
+use Picea\Extension\Extension;
+use Picea\Extension\FunctionExtension;
+
+class ImportmapExtension implements Extension {
+
+    public array $token = [ "importmap:print" ];
+   
+    public function parse(Context &$context, ?string $arguments, string $token, array $options = []) : string
+    {
+        $cls = static::class;
+
+        switch($token) {
+            case "importmap:print":
+                return "PRINTED";
+        }
+
+        $rendered = json_encode([
+            'output !'
+        ]);
+
+        return "<?php echo '<script type=\"importmap\">$rendered</script>' ?>";
+    }
+}