diff --git a/implementations/javascript/bin/preserves-schema-ts.js b/implementations/javascript/bin/preserves-schema-ts.js
new file mode 100755
index 0000000..34b1f07
--- /dev/null
+++ b/implementations/javascript/bin/preserves-schema-ts.js
@@ -0,0 +1,3 @@
+#!/usr/bin/env node
+require('../dist/bin/preserves-schema-ts.js').main(process.argv.slice(2));
+
diff --git a/implementations/javascript/package.json b/implementations/javascript/package.json
index f7588fc..d5da5e2 100644
--- a/implementations/javascript/package.json
+++ b/implementations/javascript/package.json
@@ -30,5 +30,8 @@
     "veryclean": "npm run clean && rm -rf node_modules",
     "watch": "npx tsc -w"
   },
+  "bin": {
+    "preserves-schema-ts": "./bin/preserves-schema-ts.js"
+  },
   "dependencies": {}
 }
diff --git a/implementations/javascript/rollup.config.js b/implementations/javascript/rollup.config.js
index ea85fdd..9051233 100644
--- a/implementations/javascript/rollup.config.js
+++ b/implementations/javascript/rollup.config.js
@@ -23,7 +23,7 @@ function es6(insertion, extra) {
   };
 }
 
-export default {
+export default [{
   input: 'lib/index.js',
   output: [
     umd(''),
@@ -31,4 +31,15 @@ export default {
     es6(''),
     es6('.min', { plugins: [terser()] }),
   ],
-}
+}, {
+  input: 'lib/bin/preserves-schema-ts.js',
+  output: [{
+    file: 'dist/bin/preserves-schema-ts.js',
+    format: 'umd',
+    name: 'PreservesC_TS',
+    globals: {
+      'fs': 'fs',
+    },
+  }],
+  external: ['fs'],
+}]
diff --git a/implementations/javascript/src/bin/preserves-schema-ts.ts b/implementations/javascript/src/bin/preserves-schema-ts.ts
new file mode 100644
index 0000000..8b6760e
--- /dev/null
+++ b/implementations/javascript/src/bin/preserves-schema-ts.ts
@@ -0,0 +1,12 @@
+import { BASE, compile, readSchema } from '../schema/index';
+import fs from 'fs';
+
+export function main(argv: Array<string>) {
+    console.log('// ' + JSON.stringify(argv));
+    const src = fs.readFileSync(__dirname + '/../../../../schema/schema.txt', 'utf-8');
+    const sch = readSchema(src);
+    console.log(compile(
+        [{ moduleName: 'BASE', modulePath: 'BASE', schema: BASE, inline: true }],
+        sch,
+        '..'));
+}
diff --git a/implementations/javascript/src/index.ts b/implementations/javascript/src/index.ts
index e15c7a4..9cb5d7d 100644
--- a/implementations/javascript/src/index.ts
+++ b/implementations/javascript/src/index.ts
@@ -1,21 +1,6 @@
-export * from './annotated';
-export * from './bytes';
-export * from './codec';
-export * from './decoder';
-export * from './dictionary';
-export * from './encoder';
-export * from './flex';
-export * from './float';
-export * from './fold';
-export * from './fromjs';
-export * from './is';
-export * from './reader';
-export * from './record';
-export * from './strip';
-export * from './symbols';
-export * from './text';
-export * from './values';
+export * from './runtime';
 export * as Constants from './constants';
+export * as Schema from './schema/index';
 
 const _Array = Array;
 type _Array<T> = Array<T>;
diff --git a/implementations/javascript/src/runtime.ts b/implementations/javascript/src/runtime.ts
new file mode 100644
index 0000000..654ac42
--- /dev/null
+++ b/implementations/javascript/src/runtime.ts
@@ -0,0 +1,17 @@
+export * from './annotated';
+export * from './bytes';
+export * from './codec';
+export * from './decoder';
+export * from './dictionary';
+export * from './encoder';
+export * from './flex';
+export * from './float';
+export * from './fold';
+export * from './fromjs';
+export * from './is';
+export * from './reader';
+export * from './record';
+export * from './strip';
+export * from './symbols';
+export * from './text';
+export * from './values';
diff --git a/implementations/javascript/src/schema/base.ts b/implementations/javascript/src/schema/base.ts
index 2867805..33c2793 100644
--- a/implementations/javascript/src/schema/base.ts
+++ b/implementations/javascript/src/schema/base.ts
@@ -1,4 +1,4 @@
-import { Record, KeyedDictionary } from '..';
+import { Record, KeyedDictionary } from '../runtime';
 import { AtomKind, Pattern, Schema } from './meta';
 import * as M from './meta';
 
diff --git a/implementations/javascript/src/schema/compiler.ts b/implementations/javascript/src/schema/compiler.ts
index c6e257e..59bd046 100644
--- a/implementations/javascript/src/schema/compiler.ts
+++ b/implementations/javascript/src/schema/compiler.ts
@@ -1,6 +1,6 @@
 import { Pattern, NamedPattern, Schema, Input } from "./meta";
 import * as M from './meta';
-import { Annotated, Bytes, Dictionary, Fold, fold, preserves, Record, Tuple, Value } from "..";
+import { Annotated, Bytes, Dictionary, Fold, fold, preserves, Record, Tuple, Value } from "../runtime";
 import { Formatter, parens, seq, Item, opseq, block, commas, brackets, anglebrackets, braces } from "./block";
 
 function fnblock(... items: Item[]): Item {
@@ -302,14 +302,3 @@ export function sourceCodeFor(v: Value<any>): Item {
         },
     });
 }
-
-import fs from 'fs';
-import { readSchema } from "./reader";
-import { BASE } from "./base";
-function main() {
-    const src = fs.readFileSync(__dirname + '/../../../../schema/schema.txt', 'utf-8');
-    const sch = readSchema(src);
-    console.log(compile([{ moduleName: 'BASE', modulePath: 'BASE', schema: BASE, inline: true }], sch, '..'));
-}
-
-main();
diff --git a/implementations/javascript/src/schema/index.ts b/implementations/javascript/src/schema/index.ts
new file mode 100644
index 0000000..8bcfa46
--- /dev/null
+++ b/implementations/javascript/src/schema/index.ts
@@ -0,0 +1,3 @@
+export * from './reader';
+export * from './compiler';
+export * from './base';
diff --git a/implementations/javascript/src/schema/interpreter.ts b/implementations/javascript/src/schema/interpreter.ts
index 9c746e9..21e75a0 100644
--- a/implementations/javascript/src/schema/interpreter.ts
+++ b/implementations/javascript/src/schema/interpreter.ts
@@ -1,6 +1,6 @@
 import { Environment, Pattern, NamedPattern, lookup } from "./meta";
 import * as M from './meta';
-import { Value, Float, Bytes, is, isPointer, Record, Dictionary, Set } from "..";
+import { Value, Float, Bytes, is, isPointer, Record, Dictionary, Set } from "../runtime";
 
 export function validator(env: Environment, p: Pattern): (v: Value<any>) => boolean {
     function walk(p: Pattern, v: Value<any>, recordOkAsTuple = false): boolean {
diff --git a/implementations/javascript/src/schema/meta.ts b/implementations/javascript/src/schema/meta.ts
index e4c106f..6f45af1 100644
--- a/implementations/javascript/src/schema/meta.ts
+++ b/implementations/javascript/src/schema/meta.ts
@@ -1,4 +1,4 @@
-import { Dictionary, KeyedDictionary, Record, Value, preserves } from '..';
+import { Dictionary, KeyedDictionary, Record, Value, preserves } from '../runtime';
 
 export type Input = Value<never>;
 
diff --git a/implementations/javascript/src/schema/reader.ts b/implementations/javascript/src/schema/reader.ts
index 1941438..a723f75 100644
--- a/implementations/javascript/src/schema/reader.ts
+++ b/implementations/javascript/src/schema/reader.ts
@@ -1,4 +1,4 @@
-import { Annotated, Dictionary, is, KeyedDictionary, peel, preserves, Record, strip, Tuple } from '..';
+import { Annotated, Dictionary, is, KeyedDictionary, peel, preserves, Record, strip, Tuple } from '../runtime';
 
 import { Input, NamedPattern, Pattern, Schema } from './meta';
 import * as M from './meta';