Build common as esm (#33)

packages/phishing/package.json

@@ -13,7 +13,7 @@
   "homepage": "https://github.com/polkadot-js/common/tree/master/packages/phishing#readme",
   "dependencies": {
     "@babel/runtime": "^7.12.5",
-    "@polkadot/x-fetch": "^4.2.2-12"
+    "@polkadot/x-fetch": "^4.2.2-14"
   },
   "devDependencies": {
     "@types/js-yaml": "^3.12.5",

packages/phishing/src/crosscheck.spec.ts

@@ -4,7 +4,7 @@
 import fs from 'fs';
 import { safeLoad } from 'js-yaml';
 
-import fetch from '@polkadot/x-fetch';
+import { fetch } from '@polkadot/x-fetch';
 
 import { retrieveHostList } from '.';
 

packages/phishing/src/index.ts

@@ -3,7 +3,7 @@
 
 import type { HostList } from './types';
 
-import fetch from '@polkadot/x-fetch';
+import { fetch } from '@polkadot/x-fetch';
 
 // Equivalent to https://raw.githubusercontent.com/polkadot-js/phishing/master/all.json
 const ALL_JSON = 'https://polkadot.js.org/phishing/all.json';