optim fmt.timestamp & fmt.joinedByLineFeed

Author: TheNorthMemory

lib/formatter.js

@@ -1,5 +1,16 @@
-/* eslint no-bitwise: ["error", { "allow": ["|"] }] */
 const { randomFillSync } = require('crypto');
+
+/**
+ * Joined the inputs by a `Line Feed`(LF) char.
+ *
+ * @param {(string|number)[]} pieces - The string(s) joined by line feed.
+ *
+ * @returns {string} - The joined string.
+ */
+function joinedByLineFeed(...pieces) {
+  return [].concat(pieces, '').join('\n');
+}
+
 /**
  * Provides easy used methods using in this project.
  */
@@ -12,7 +23,7 @@ class Formatter {
    * @returns {object} - The casted source intputs as {rows, summary} Object
    */
   static castCsvBill(buffer) {
-    const data = Buffer.from(buffer).slice(3/* BOM(EFBBBF) */).toString().split(/\r?\n/);
+    const data = Buffer.from(buffer).subarray(3/* BOM(EFBBBF) */).toString().split(/\r?\n/);
     const list = data.slice(1, -3);
     const foot = data.slice(-3);
     const head = data.shift().split(',');
@@ -57,7 +68,7 @@ class Formatter {
    * @returns {number} Epoch timestamp.
    */
   static timestamp() {
-    return Date.now() / 1000 | 0;
+    return Math.floor(Date.now() / 1000);
   }
 
   /**
@@ -87,7 +98,7 @@ class Formatter {
    * @returns {string} - The content for `Rsa.sign`
    */
   static request(method, uri, timestamp, nonce, body = '') {
-    return this.joinedByLineFeed(method, uri, timestamp, nonce, body);
+    return joinedByLineFeed(method, uri, timestamp, nonce, body);
   }
 
   /**
@@ -100,19 +111,10 @@ class Formatter {
    * @returns {string} - The content for `Rsa.verify`
    */
   static response(timestamp, nonce, body = '') {
-    return this.joinedByLineFeed(timestamp, nonce, body);
+    return joinedByLineFeed(timestamp, nonce, body);
   }
 
-  /**
-   * Joined this inputs by for `Line Feed`(LF) char.
-   *
-   * @param {string[]} pieces - The string(s) joined by line feed.
-   *
-   * @returns {string} - The joined string.
-   */
-  static joinedByLineFeed(...pieces) {
-    return [...pieces, ''].join('\n');
-  }
+  static joinedByLineFeed = joinedByLineFeed
 
   /**
    * Sorts an Object by key.