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// Polyfills
if ( Number.EPSILON === undefined ) {
Number.EPSILON = Math.pow( 2, - 52 );
}
if ( Number.isInteger === undefined ) {
// Missing in IE
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isInteger
Number.isInteger = function ( value ) {
return typeof value === 'number' && isFinite( value ) && Math.floor( value ) === value;
};
}
//
if ( Math.sign === undefined ) {
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/sign
Math.sign = function ( x ) {
return ( x < 0 ) ? - 1 : ( x > 0 ) ? 1 : + x;
};
}
if ( 'name' in Function.prototype === false ) {
// Missing in IE
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name
Object.defineProperty( Function.prototype, 'name', {
get: function () {
return this.toString().match( /^\s*function\s*([^\(\s]*)/ )[ 1 ];
}
} );
}
if ( Object.assign === undefined ) {
// Missing in IE
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/assign
( function () {
Object.assign = function ( target ) {
'use strict';
if ( target === undefined || target === null ) {
throw new TypeError( 'Cannot convert undefined or null to object' );
}
var output = Object( target );
for ( var index = 1; index < arguments.length; index ++ ) {
var source = arguments[ index ];
if ( source !== undefined && source !== null ) {
for ( var nextKey in source ) {
if ( Object.prototype.hasOwnProperty.call( source, nextKey ) ) {
output[ nextKey ] = source[ nextKey ];
}
}
}
}
return output;
};
} )();
}
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