Some updates!

src/lib/url.js

@@ -0,0 +1,38 @@
+// -------------------------------------------------------------
+// WARNING: this file is used by both the client and the server.
+// Do not use any browser or node-specific API!
+// -------------------------------------------------------------
+const codec = require('./codec');
+const defaultConfig = {
+    prefix: '/service/',
+    codec: 'plain'
+};
+
+class URLWrapper {
+    constructor(config = defaultConfig) {
+        this.prefix = config.prefix || defaultConfig.prefix;
+        this.codec = codec[config.codec || 'plain'] || codec['plain'];
+        this.regex = /^(#|about:|data:|blob:|mailto:|javascript:)/;
+    };
+    wrap(val, config = {}) {
+        if (!val || this.regex.test(val)) return val;  
+        let flags = '';
+        (config.flags || []).forEach(flag => flags += `${flag}_/`);
+        if (config.base) try {
+            if (!['http:', 'https:', 'ws:', 'wss:'].includes(new URL(val, config.base).protocol)) return val;
+        } catch(e) {
+            return val;
+        };
+        return (config.origin || '') + this.prefix + flags + this.codec.encode(config.base ? new URL(val, config.base) : val) + '/';
+    };
+    unwrap(val, config = {}) {
+        if (!val || this.regex.test(val)) return val;
+        let processed = val.slice((config.origin || '').length + this.prefix.length);
+        const flags = ('/' + processed).match(/(?<=\/)(.*?)(?=_\/)/g) || [];
+        flags.forEach(flag => processed = processed.slice(`${flag}_/`.length));
+        let [ url, leftovers ] = processed.split(/\/(.+)?/);
+        return config.flags ? { value: this.codec.decode((url || '')) + (config.leftovers && leftovers ? leftovers : ''), flags } : this.codec.decode((url || '')) + (config.leftovers && leftovers ? leftovers : '');
+    };
+};  
+
+module.exports = URLWrapper;