Node.js: renamed "require_shim" to "loader".

src/nodejs/unit-http/loader.js

@@ -0,0 +1,27 @@
+// can only be ran as part of a --require param on the node process
+if (module.parent && module.parent.id === "internal/preload") {
+    const { Module } = require("module")
+
+    if (!Module.prototype.require.__unit_loader) {
+        const http = require("./http")
+        const websocket = require("./websocket")
+
+        const original = Module.prototype.require;
+
+        Module.prototype.require = function (id) {
+            switch(id) {
+                case "http":
+                case "unit-http":
+                    return http
+
+                case "websocket":
+                case "unit-http/websocket":
+                    return websocket
+            }
+
+            return original.apply(this, arguments);
+        }
+
+        Module.prototype.require.__unit_loader = true;
+    }
+}