first commit

javascript/RunJS.node.js

@@ -0,0 +1,38 @@
+// Node.js compatible runner
+// Run: node RunJS.node.js [script.js]
+
+"use strict";
+
+var context = {
+    println: function() {
+        console.log(Array.prototype.map.call(arguments, String).join(' '));
+    },
+    print: function() {
+        process.stdout.write(Array.prototype.map.call(arguments, String).join(' '));
+    },
+    eval: function(script, file) {
+        return require("vm").runInNewContext(script, context, file || "eval");
+    },
+    fs: require("fs"),
+    include: function(file) {
+        if (file.endsWith(".mjs")) {
+            context.println(`ES module loading not supported: ${file}`);
+        } else {
+            context.eval(context.fs.readFileSync(file), {encoding: "utf8"});
+        }
+    },
+    readLine: function(prompt) {
+        context.reader = context.reader || require("readline-sync"); //npm install readline-sync
+        if (prompt !== undefined) {
+            context.print(prompt);
+        }
+        return context.reader.question();
+    },
+    getScript() {
+        const argv = process.argv.slice(2);
+        return argv.length == 0 ? "examples.js" : argv[0];
+    }
+};
+context.global = context;
+
+context.include(context.getScript());