Resolve exports and imports; Initial work on binary and unary ops

tests/compiler.ts

@@ -0,0 +1,37 @@
+import "../src/glue/js";
+import { Compiler } from "../src/compiler";
+import { Parser } from "../src/parser";
+
+const files: Map<string,string> = new Map([
+  ["main", `import { Test } from "./a"; export { TestAlias } from "./d";`],
+  ["a", `export { Test } from "./b";`],
+  ["b", `export { Test } from "./c";`],
+  ["c", `export enum Test { ONE = 1 }`],
+  ["d", `export { Test as TestAlias } from "./b";`]
+]);
+
+const parser = new Parser();
+parser.parseFile(<string>files.get("main"), "main", true);
+do {
+  let nextFile = parser.nextFile();
+  if (!nextFile)
+    break;
+  if (!files.has(nextFile))
+    throw new Error("file not found: " + nextFile);
+  parser.parseFile(<string>files.get(nextFile), nextFile, false);
+} while(true);
+const program = parser.finish();
+const compiler = new Compiler(program);
+const module = compiler.compile();
+
+console.log("names", program.names);
+console.log("exports", program.exports);
+
+// module.optimize();
+// module.validate(); // global initializers can't use i32.add etc. yet
+/* _BinaryenModulePrint(module.ref);
+
+console.log("--- statements ---");
+compiler.statements.forEach(stmt => {
+  _BinaryenExpressionPrint(stmt);
+}); */