Small adjustments for esm (& default build) (#798)

packages/x-textdecoder/src/browser.ts

@@ -1,8 +1,8 @@
 // Copyright 2017-2020 @polkadot/x-textencoder authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
-import Fallback from './fallback';
+import { TextDecoder as Fallback } from './fallback';
 
-export default typeof TextDecoder === 'undefined'
-  ? Fallback as unknown as typeof TextDecoder
-  : TextDecoder;
+export const TextDecoder = typeof global.TextDecoder === 'undefined'
+  ? Fallback as unknown as typeof global.TextDecoder
+  : global.TextDecoder;

packages/x-textdecoder/src/fallback.ts

@@ -2,7 +2,7 @@
 // SPDX-License-Identifier: Apache-2.0
 
 // This is very limited, only handling Ascii values
-export default class TextDecoder {
+export class TextDecoder {
   // eslint-disable-next-line @typescript-eslint/no-unused-vars,no-useless-constructor
   constructor (_: 'utf-8') {
     // nothing

packages/x-textdecoder/src/node.ts

@@ -3,6 +3,6 @@
 
 import { TextDecoder as NodeTextDecoder } from 'util';
 
-export default typeof TextDecoder === 'undefined'
-  ? NodeTextDecoder as unknown as typeof TextDecoder
-  : TextDecoder;
+export const TextDecoder = typeof global.TextDecoder === 'undefined'
+  ? NodeTextDecoder as unknown as typeof global.TextDecoder
+  : global.TextDecoder;

packages/x-textdecoder/src/react-native.ts

@@ -1,6 +1,4 @@
 // Copyright 2017-2020 @polkadot/x-textencoder authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
-import browser from './browser';
-
-export default browser;
+export { TextDecoder } from './browser';

packages/x-textdecoder/src/typeCheck.ts

@@ -1,8 +1,8 @@
 // Copyright 2017-2020 @polkadot/x-textdecoder authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
-import BrowserTD from './browser';
-import NodeTD from './node';
+import { TextDecoder as BrowserTD } from './browser';
+import { TextDecoder as NodeTD } from './node';
 
 console.log(new BrowserTD('utf-8').decode(new Uint8Array([1, 2, 3])));
 console.log(new NodeTD('utf-8').decode(new Uint8Array([1, 2, 3])));