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node_modules/less/lib/less-node/plugin-loader.js

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+import path from 'path';
+import { createRequire } from 'module';
+import AbstractPluginLoader from '../less/environment/abstract-plugin-loader.js';
+
+const require = createRequire(import.meta.url);
+
+/**
+ * Node Plugin Loader
+ */
+const PluginLoader = function(less) {
+    this.less = less;
+    this.require = prefix => {
+        prefix = path.dirname(prefix);
+        return id => {
+            const str = id.slice(0, 2);
+            if (str === '..' || str === './') {
+                return require(path.join(prefix, id));
+            }
+            else {
+                return require(id);
+            }
+        };
+    };
+};
+
+PluginLoader.prototype = Object.assign(new AbstractPluginLoader(), {
+    loadPlugin(filename, basePath, context, environment, fileManager) {
+        const prefix = filename.slice(0, 1);
+        const explicit = prefix === '.' || prefix === '/' || filename.slice(-3).toLowerCase() === '.js';
+        if (!explicit) {
+            context.prefixes = ['less-plugin-', ''];
+        }
+
+        if (context.syncImport) {
+            return fileManager.loadFileSync(filename, basePath, context, environment);
+        }
+
+        return new Promise((fulfill, reject) => {
+            fileManager.loadFile(filename, basePath, context, environment).then(
+                data => {
+                    try {
+                        fulfill(data);
+                    }
+                    catch (e) {
+                        console.log(e);
+                        reject(e);
+                    }
+                }
+            ).catch(err => {
+                reject(err);
+            });
+        });
+    },
+
+    loadPluginSync(filename, basePath, context, environment, fileManager) {
+        context.syncImport = true;
+        return this.loadPlugin(filename, basePath, context, environment, fileManager);
+    }
+});
+
+export default PluginLoader;
+