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node_modules/less/lib/less-node/url-file-manager.js

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+/* eslint-disable no-unused-vars */
+/**
+ * @todo - remove top eslint rule when FileManagers have JSDoc type
+ * and are TS-type-checked
+ */
+import { createRequire } from 'module';
+
+const require = createRequire(import.meta.url);
+
+const isUrlRe = /^(?:https?:)?\/\//i;
+import url from 'url';
+let request;
+import AbstractFileManager from '../less/environment/abstract-file-manager.js';
+import logger from '../less/logger.js';
+
+const UrlFileManager = function() {}
+UrlFileManager.prototype = Object.assign(new AbstractFileManager(), {
+    supports(filename, currentDirectory, options, environment) {
+        return isUrlRe.test( filename ) || isUrlRe.test(currentDirectory);
+    },
+
+    loadFile(filename, currentDirectory, options, environment) {
+        return new Promise((fulfill, reject) => {
+            if (request === undefined) {
+                try { request = require('needle'); }
+                catch (e) { request = null; }
+            }
+            if (!request) {
+                reject({ type: 'File', message: 'optional dependency \'needle\' required to import over http(s)\n' });
+                return;
+            }
+
+            let urlStr = isUrlRe.test( filename ) ? filename : url.resolve(currentDirectory, filename);
+
+            /** native-request currently has a bug */
+            const hackUrlStr = urlStr.indexOf('?') === -1 ? urlStr + '?' : urlStr
+
+            request.get(hackUrlStr, { follow_max: 5 }, (err, resp, body) => {
+                if (err || resp && resp.statusCode >= 400) {
+                    const message = resp && resp.statusCode === 404
+                        ? `resource '${urlStr}' was not found\n`
+                        : `resource '${urlStr}' gave this Error:\n  ${err || resp.statusMessage || resp.statusCode}\n`;
+                    reject({ type: 'File', message });
+                    return;
+                }
+                if (resp.statusCode >= 300) {
+                    reject({ type: 'File', message: `resource '${urlStr}' caused too many redirects` });
+                    return;
+                }
+                body = body.toString('utf8');
+                if (!body) {
+                    logger.warn(`Warning: Empty body (HTTP ${resp.statusCode}) returned by "${urlStr}"`);
+                }
+                fulfill({ contents: body || '', filename: urlStr });
+            });
+        });
+    }
+});
+
+export default UrlFileManager;