feature: port from python client lib

rollup.config.js

@@ -0,0 +1,41 @@
+import typescript from '@rollup/plugin-typescript';
+import resolve from '@rollup/plugin-node-resolve';
+import commonjs from '@rollup/plugin-commonjs';
+
+const target = process.env.TARGET || 'node';
+
+const config = {
+    input: target === 'browser' ? 'src/browser.ts' : 'src/node.ts',
+    plugins: [
+        resolve(),
+        commonjs(),
+        typescript({
+            tsconfig: './tsconfig.json',
+            declaration: false,
+            declarationDir: undefined
+        })
+    ]
+};
+
+if (target === 'node') {
+    config.output = [
+        {
+            file: 'dist/node/index.js',
+            format: 'cjs',
+            exports: 'named'
+        },
+        {
+            file: 'dist/esm/index.js',
+            format: 'es'
+        }
+    ];
+    config.external = ['crypto', 'https', 'fs', 'path'];
+} else if (target === 'browser') {
+    config.output = {
+        file: 'dist/browser/index.js',
+        format: 'es',
+        name: 'Nomyo'
+    };
+}
+
+export default config;