Remove object-assign dependency

And use already included polyfill instead

package.json

@@ -22,7 +22,6 @@
     "jspdf": "^1.5.3",
     "mocha": "^7.1.1",
     "npm-check-updates": "^4.1.2",
-    "object-assign": "^4.1.1",
     "prettier": "2.0.4",
     "ts-loader": "^6.2.2",
     "ts-node": "^8.8.2",

src/models.ts

@@ -2,11 +2,10 @@ import { defaultConfig, FONT_ROW_RATIO } from './config'
 import state from './state'
 import { CellHookData, HookData } from './HookData'
 import { applyUserStyles, marginOrPadding, styles } from './common'
+import { assign } from './polyfills'
 
 declare function require(path: string): any
 
-var assign = require('object-assign')
-
 type HookHandler = (data: HookData) => void | boolean
 type CellHookHandler = (data: CellHookData) => void | boolean
 

src/tableDrawer.ts

@@ -7,8 +7,7 @@ import {
 } from './common'
 import { Cell, Row, Table } from './models'
 import state from './state'
-
-let assign = require('object-assign')
+import { assign } from './polyfills'
 
 export function drawTable(table: Table) {
   let settings = table.settings