public JsOptimizer::optimize(array $js_asset)
Optimizes an asset.
Parameters
array $asset: An asset.
Return value
string The optimized asset's contents.
Overrides AssetOptimizerInterface::optimize
File
- core/lib/Drupal/Core/Asset/JsOptimizer.php, line 15
Class
- JsOptimizer
- Optimizes a JavaScript asset.
Namespace
Drupal\Core\Asset
Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 | public function optimize(array $js_asset) { if ($js_asset['type'] !== 'file') { throw new \Exception('Only file JavaScript assets can be optimized.'); } if (!$js_asset['preprocess']) { throw new \Exception('Only file JavaScript assets with preprocessing enabled can be optimized.'); } // If a BOM is found, convert the file to UTF-8, then use substr() to // remove the BOM from the result. $data = file_get_contents($js_asset['data']); if ($encoding = (Unicode::encodingFromBOM($data))) { $data = Unicode::substr(Unicode::convertToUtf8($data, $encoding), 1); } // If no BOM is found, check for the charset attribute. elseif (isset($js_asset['attributes']['charset'])) { $data = Unicode::convertToUtf8($data, $js_asset['attributes']['charset']); } // No-op optimizer: no optimizations are applied to JavaScript assets. return $data;} |
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