polyfill tripRight for IE11. fix #783

CHANGELOG.md

@@ -5,6 +5,9 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 ## Not released:
 
+* Allow hitStrokeWidth usage, even if a shape has not stroke visible
+* Better IE11 support
+
 ## 4.0.16 - 2019-10-21
 
 * Warn on undefined return value of `dragBoundFunc`.

src/shapes/Text.ts

@@ -94,6 +94,11 @@ function checkDefaultFill(config) {
   return config;
 }
 
+// polyfill for IE11
+const trimRight = String.prototype.trimRight || function polyfill() {
+  return this.replace(/[\s\xa0]+$/, '');
+}
+
 /**
  * Text constructor
  * @constructor
@@ -461,7 +466,7 @@ export class Text extends Shape<TextConfig> {
               }
             }
             // if (align === 'right') {
-            match = match.trimRight();
+            match = trimRight.call(match);
             // }
             this._addTextLine(match);
             textWidth = Math.max(textWidth, matchWidth);