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safari-fix-map

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safari-fix-map

Simple commonjs module to replace Safari's bugginess with better polyfills.


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151
increased by17.05%
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Safari-Fix-Map

This is a short javascript module that checks whether it is running on Safari, and if so, deletes window.Map and replaces it with a more competent polyfill.

Safari's Map implementation has bugs that causes it to sometimes return completely wrong objects from its .get method. It might have to do with using Maps in browser extensions or MutationObserver callbacks. I suspect those aren't well-tested in Safari. I have stared at error stacks and prodded debuggers to check my sanity. I have looked into the abyss. I have seen this code fail in Safari 8:

function checkMap(map) {
  map.forEach(function(value, key) {
    if (!Number.isNaN(value) && value !== map.get(key)) {
      throw new Error("world is insane at key "+key);
    }
  });
}

This module is for people who wish to seal Eldritch horrors securely away.

You're using Browserify and NPM, right?

npm i --save safari-fix-map
require('safari-fix-map');
// Go on with your life in freedom

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Package last updated on 08 Jun 2016

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