Move date formatter to format (#534)

* Move date formatter to format

* Cleanup padding

CHANGELOG.md

@@ -1,5 +1,6 @@
 # 2.3.0-beta.x
 
+- Remove dependency on moment.js, with internal format function (Thanks to https://github.com/AndreasGassmann)
 - Move TypeScript `@types/*` to dev deps (Thanks to https://github.com/AndreasGassmann)
 - Move to `@polkadot/wasm-crypto` 1.0
 - Cleanup dependencies to pave the way for using yarn2 (Explicit instead of implicit)

packages/util/src/format/formatDate.spec.ts

@@ -0,0 +1,16 @@
+// Copyright 2017-2020 @polkadot/util authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+import formatDate from './formatDate';
+
+describe('formatDate', (): void => {
+  it('formats a known date into the correct format', (): void => {
+    const date = new Date(Date.UTC(2020, 1, 15, 11, 14, 34));
+
+    // make this test-locale agnostic
+    date.setTime(date.getTime() + date.getTimezoneOffset() * 60 * 1000);
+
+    expect(formatDate(date)).toEqual('2020-02-15 11:14:34');
+  });
+});

packages/util/src/format/formatDate.ts

@@ -0,0 +1,19 @@
+// Copyright 2017-2020 @polkadot/util authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+/** @internal */
+function zeroPad (value: number): string {
+  return value.toString().padStart(2, '0');
+}
+
+export default function formatDate (date: Date): string {
+  const year = date.getFullYear().toString();
+  const month = zeroPad((date.getMonth() + 1));
+  const day = zeroPad(date.getDate());
+  const hour = zeroPad(date.getHours());
+  const minute = zeroPad(date.getMinutes());
+  const second = zeroPad(date.getSeconds());
+
+  return `${year}-${month}-${day} ${hour}:${minute}:${second}`;
+}

packages/util/src/format/index.ts

@@ -3,6 +3,7 @@
 // of the Apache-2.0 license. See the LICENSE file for details.
 
 export { default as formatBalance } from './formatBalance';
+export { default as formatDate } from './formatDate';
 export { default as formatDecimal } from './formatDecimal';
 export { default as formatElapsed } from './formatElapsed';
 export { default as formatNumber } from './formatNumber';

packages/util/src/logger.ts

@@ -6,6 +6,7 @@ import { Logger, Logger$Data } from './types';
 
 import chalk from 'chalk';
 
+import formatDate from './format/formatDate';
 import isBn from './is/bn';
 import isBuffer from './is/buffer';
 import isFunction from './is/function';
@@ -69,18 +70,6 @@ export function format (value: any): any {
   return value;
 }
 
-function formatDate (date: Date): string {
-  const year = date.getFullYear().toString();
-  const month = (date.getMonth() + 1).toString().padStart(2, '0');
-  const day = date.getDate().toString().padStart(2, '0');
-
-  const hour = date.getHours().toString().padStart(2, '0');
-  const minute = date.getMinutes().toString().padStart(2, '0');
-  const second = date.getSeconds().toString().padStart(2, '0');
-
-  return `${year}-${month}-${day} ${hour}:${minute}:${second}`;
-}
-
 function apply (log: LogType, type: string, values: Logger$Data): void {
   if (values.length === 1 && isFunction(values[0])) {
     const fnResult = (values[0] as Function)();