remove support for node < v8

.travis.yml

@@ -3,5 +3,3 @@ node_js:
   - 12
   - 10
   - 8
-  - 6
-  - 4

index.js

@@ -1,4 +1,3 @@
-'use strict'
 const os = require('os')
 
 /**
@@ -22,7 +21,6 @@ const os = require('os')
  *  layout
  */
 class Table {
-
   /**
    * @param {object[]} - input data
    * @param [options] {object} - optional settings
@@ -177,12 +175,10 @@ function getLongestArray (arrays) {
 
 function padCell (cellValue, padding, width) {
   const ansi = require('./lib/ansi')
-  const padEnd = require('lodash.padend')
   var ansiLength = cellValue.length - ansi.remove(cellValue).length
   cellValue = cellValue || ''
   return (padding.left || '') +
-  padEnd(cellValue, width - padding.length() + ansiLength) +
-  (padding.right || '')
+  cellValue.padEnd(width - padding.length() + ansiLength) + (padding.right || '')
 }
 
 /**

lib/ansi.js

@@ -1,5 +1,3 @@
-'use strict'
-
 const ansiEscapeSequence = /\u001b.*?m/g
 
 /**

lib/cell.js

@@ -1,4 +1,3 @@
-'use strict'
 const t = require('typical')
 
 const _value = new WeakMap()
@@ -16,7 +15,7 @@ class Cell {
 
   get value () {
     let cellValue = _value.get(this)
-    if (t.isFunction(cellValue)) cellValue = cellValue.call(_column.get(this))
+    if (typeof cellValue === 'function') cellValue = cellValue.call(_column.get(this))
     if (cellValue === undefined) {
       cellValue = ''
     } else {

lib/column.js

@@ -1,4 +1,3 @@
-'use strict'
 const t = require('typical')
 const Padding = require('./padding')
 

lib/columns.js

@@ -1,4 +1,3 @@
-'use strict'
 const t = require('typical')
 const arrayify = require('array-back')
 const Column = require('./column')

lib/padding.js

@@ -1,5 +1,3 @@
-'use strict'
-
 class Padding {
   constructor (padding) {
     this.left = padding.left

lib/rows.js

@@ -1,4 +1,3 @@
-'use strict'
 const arrayify = require('array-back')
 const Cell = require('./cell')
 const t = require('typical')
@@ -29,7 +28,7 @@ class Rows {
     const emptyColumns = distinctColumnNames.filter(columnName => {
       const hasValue = data.some(row => {
         const value = row[columnName]
-        return (t.isDefined(value) && !t.isString(value)) || (t.isString(value) && /\S+/.test(value))
+        return (t.isDefined(value) && typeof value !== 'string') || (typeof value === 'string' && /\S+/.test(value))
       })
       return !hasValue
     })