Import other modules into monorepo

src/util/error/ErrorWithContext.ts

@@ -0,0 +1,26 @@
+/**
+ * An Error base-class that also provides some additional context.
+ *
+ * All first-party error handlers in Extollo can render the context as part of
+ * the display of the error (e.g. in the console, in the HTML response, &c.)
+ *
+ * @example
+ * ```typescript
+ * function myFunc(arg1, arg2) {
+ *     // ...do something...
+ *     throw new ErrorWithContext('Something went wrong!', { arg1, arg2 })
+ * }
+ * ```
+ */
+export class ErrorWithContext extends Error {
+    public context: {[key: string]: any} = {}
+    public originalError?: Error
+
+    constructor(
+        message: string,
+        context?: {[key: string]: any}
+    ) {
+        super(message)
+        if ( context ) this.context = context
+    }
+}