MDL-62497 javascript: fix truncate.js

There was some code in the charLengthAt function which was requiring
that the "this" context not be null however it was unnecessary
because it never uses "this" and for some reason it was being set to
null after the ES6 transpiling.

lib/amd/build/truncate.min.js

@@ -1,2 +1,2 @@
-define ("core/truncate",["jquery"],function(a){var b=/(\s*\S+|\s)$/,c=/^(\S*)/,d=/\s/,e=function(a,b){if(null==this){throw TypeError()}var c=a+"",d=c.length,e=b?+b:0;if(e!=e){e=0}if(-1>=e||e>=d){return""}e=0|e;var f=c.charCodeAt(e),g,h=e+1,i=1;if(55296<=f&&56319>=f&&d>h){g=c.charCodeAt(h);if(56320<=g&&57343>=g){i=2}}return i},f=function(a){for(var b=0,c=0;c<a.length;c+=e(a,c)){b++}return b},g=function(a,b){if(!a.length){return 0}var c=0,d=0;do{c+=e(a,c);d++}while(c<a.length&&d<b);return c};a.truncate=function(b,c){return a("<div></div>").append(b).truncate(c).html()};a.fn.truncate=function(e){if(!isNaN(parseFloat(e)))e={length:e};var h=a.extend({},a.truncate.defaults,e);return this.each(function(){var e=a(this);if(h.noBreaks)e.find("br").replaceWith(" ");var j=h.ellipsis.length,k=e.text(),l=f(k),m=l-h.length+j;if(l<h.length)return;if(h.stripTags)e.text(k);if(h.words&&0<m){var n=k.slice(0,g(k,h.length-j)+1),o=n.replace(b,""),p=f(o),q=n.match(d)?!1:!0;if(h.keepFirstWord&&0===p){m=l-f(c.exec(k)[0])-j}else if(q&&0===p){m=l-h.length+j}else{m=l-p-1}}if(m>l){m=l-h.length}if(0>m||!m&&!h.truncated)return;a.each(e.contents().get().reverse(),function(b,c){var d=a(c),e=d.text(),i=f(e);if(i<=m){h.truncated=!0;m-=i;d.remove();return}if(3===c.nodeType){var k=i-m;k=0<=k?g(e,k):0;a(c.splitText(k)).replaceWith(h.ellipsis);return!1}d.truncate(a.extend(h,{length:i-m+j}));return!1})})};a.truncate.defaults={stripTags:!1,words:!1,keepFirstWord:!1,noBreaks:!1,length:1/0,ellipsis:"\u2026"};return{truncate:a.truncate}});
+define ("core/truncate",["jquery"],function(a){var b=/(\s*\S+|\s)$/,c=/^(\S*)/,d=/\s/,e=function(a,b){var c=a+"",d=c.length,e=b?+b:0;if(e!=e){e=0}if(-1>=e||e>=d){return""}e=0|e;var f=c.charCodeAt(e),g,h=e+1,i=1;if(55296<=f&&56319>=f&&d>h){g=c.charCodeAt(h);if(56320<=g&&57343>=g){i=2}}return i},f=function(a){for(var b=0,c=0;c<a.length;c+=e(a,c)){b++}return b},g=function(a,b){if(!a.length){return 0}var c=0,d=0;do{c+=e(a,c);d++}while(c<a.length&&d<b);return c};a.truncate=function(b,c){return a("<div></div>").append(b).truncate(c).html()};a.fn.truncate=function(e){if(!isNaN(parseFloat(e)))e={length:e};var h=a.extend({},a.truncate.defaults,e);return this.each(function(){var e=a(this);if(h.noBreaks)e.find("br").replaceWith(" ");var j=h.ellipsis.length,k=e.text(),l=f(k),m=l-h.length+j;if(l<h.length)return;if(h.stripTags)e.text(k);if(h.words&&0<m){var n=k.slice(0,g(k,h.length-j)+1),o=n.replace(b,""),p=f(o),q=n.match(d)?!1:!0;if(h.keepFirstWord&&0===p){m=l-f(c.exec(k)[0])-j}else if(q&&0===p){m=l-h.length+j}else{m=l-p-1}}if(m>l){m=l-h.length}if(0>m||!m&&!h.truncated)return;a.each(e.contents().get().reverse(),function(b,c){var d=a(c),e=d.text(),i=f(e);if(i<=m){h.truncated=!0;m-=i;d.remove();return}if(3===c.nodeType){var k=i-m;k=0<=k?g(e,k):0;a(c.splitText(k)).replaceWith(h.ellipsis);return!1}d.truncate(a.extend(h,{length:i-m+j}));return!1})})};a.truncate.defaults={stripTags:!1,words:!1,keepFirstWord:!1,noBreaks:!1,length:1/0,ellipsis:"\u2026"};return{truncate:a.truncate}});
 //# sourceMappingURL=truncate.min.js.map

lib/amd/src/truncate.js

@@ -50,9 +50,6 @@ define(['jquery'], function($) {
   // implementation. Much love.
   // see: https://github.com/mathiasbynens/String.prototype.at/blob/master/at.js
   var charLengthAt = function(text, position) {
-    if (this == null) {
-      throw TypeError();
-    }
     var string = String(text);
     var size = string.length;
     // `ToInteger`