smap-shim.min.js

//! Copyright 2012 Eric Wendelin - MIT License
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}throw Error("Stop Iteration");}},iterator:{value:function(){return this}},toString:{value:function(){return"[object Map Iterator]"}}})},h=function(d,a){var e=g.call(c,d);-1<e?(b[e]=a,f[e]=a):(b.push([d,a]),c.push(d),f.push(a))},l=function(a){if(2!==a.length)throw new TypeError("Invalid iterable passed to Map constructor");h(a[0],a[1])};if(Array.isArray(a))a.forEach(l);else if(void 0!==a)throw new TypeError("Invalid Map");return Object.create(e,{items:{value:function(){return[].slice.call(b)}},keys:{value:function(){return[].slice.call(c)}},
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(function(){Map.prototype.filter=function(a){if("function"!=typeof a)throw new TypeError("Expected a function argument");var b=new Map;this.forEach(function(c,e,i){a(e,c,i)&&b.set(e,c)});return b};Map.prototype.merge=function(a){function b(a,b){c.set(b,a)}if(!(a instanceof Map))throw new TypeError("Cannot merge with objects that are not Maps");var c=new Map;this.forEach(b);a.forEach(b);return c};Map.prototype.fetch=function(a,b){return this.has(a)?this.get(a):b};Map.prototype.invert=function(){var a=
    new Map;this.forEach(a.set);return a};Map.prototype.reject=function(a){if("function"!=typeof a)throw new TypeError("Expected a function argument");this.forEach(function(b,c,e){if(a(c,b,e))e["delete"](c)}.bind(this))};Map.prototype.isEmpty=function(){return 0===this.keys().length}})();