reorganize directory and file structure

lib/meta/type_constructor.js

@@ -0,0 +1,21 @@
+import { getHumanReadableName } from "../primitives/symbol.js";
+
+const __makeTypeConstructor = (symbol, nAry, params) => {
+  if (nAry === 0) {
+    return { symbol, params };
+  }
+  // only for debugging, do we give the function a name
+  const fName = `${getHumanReadableName(symbol).toLowerCase()}Type${params.length>0?params.length:''}`;
+  return {
+    [fName]: typeParam => {
+      if (typeof typeParam !== 'function') {
+        throw new Error("all type params must be functions");
+      }
+      return __makeTypeConstructor(symbol, nAry-1, params.concat([typeParam]));
+    }
+  }[fName];
+}
+
+// Creates a new nominal type
+// export const makeTypeConstructor = symbol => nAry => makeTypeConstructorInternal(symbol, nAry);
+export const makeTypeConstructor = symbol => nAry => __makeTypeConstructor(symbol, nAry, []);

lib/meta/type_constructor.types.js

@@ -0,0 +1,9 @@
+import { getDefaultTypeParser } from "../parser/type_parser.js"
+import { makeTypeConstructor } from "./type_constructor.js";
+
+const mkType = getDefaultTypeParser();
+
+export const ModuleTypeConstructor = [
+  // Problem: number of parameters of returned function depends on the 'Int' parameter...
+  // {i: makeTypeConstructor, t: mkType("SymbolT -> Int -> ??")}
+];