Gutenberg: Spacer & Image blocks do not function in IE11

[kjellr]

Describe the bug

In IE11, the spacer and image blocks are replaced with an error message:

To Reproduce

1. Use IE11
2. Add a spacer or image block
3. See the message.

Tested in:
Windows 7, IE 11.0.9600.17420
Gutenberg 3.4

[youknowriad]

Can you provide the JavaScript error in the console as well? Thanks

[kjellr]

Sure, @youknowriad:

```TypeError: Object doesn't support property or method 'from'
{
[functions]: ,
__proto__: { },
description: "Object doesn't support property or method 'from'",
message: "Object doesn't support property or method 'from'",
name: "TypeError",
number: -2146827850,
stack: "TypeError: Object doesn't support property or method 'from'
at Anonymous function (https://original-smelt.jurassic.ninja/wp-content/plugins/gutenberg/build/core-blocks/index.js?ver=1533571140:12:70124)
at base.get (https://original-smelt.jurassic.ninja/wp-content/plugins/gutenberg/build/core-blocks/index.js?ver=1533571140:12:70011)
at value (https://original-smelt.jurassic.ninja/wp-content/plugins/gutenberg/build/core-blocks/index.js?ver=1533571140:12:63686)
at jc (https://original-smelt.jurassic.ninja/wp-content/plugins/gutenberg/vendor/react-dom.min.82e21c65.js:134:121)
at gc (https://original-smelt.jurassic.ninja/wp-content/plugins/gutenberg/vendor/react-dom.min.82e21c65.js:127:223)
at vb (https://original-smelt.jurassic.ninja/wp-content/plugins/gutenberg/vendor/react-dom.min.82e21c65.js:126:230)
at ub (https://original-smelt.jurassic.ninja/wp-content/plugins/gutenberg/vendor/react-dom.min.82e21c65.js:126:65)
at zd (https://original-smelt.jurassic.ninja/wp-content/plugins/gutenberg/"
}

TypeError: Object doesn't support property or method 'from'
{
[functions]: ,
__proto__: { },
description: "Object doesn't support property or method 'from'",
message: "Object doesn't support property or method 'from'",
name: "TypeError",
number: -2146827850,
stack: "TypeError: Object doesn't support property or method 'from'
at Anonymous function (https://original-smelt.jurassic.ninja/wp-content/plugins/gutenberg/build/core-blocks/index.js?ver=1533571140:12:70124)
at base.get (https://original-smelt.jurassic.ninja/wp-content/plugins/gutenberg/build/core-blocks/index.js?ver=1533571140:12:70011)
at value (https://original-smelt.jurassic.ninja/wp-content/plugins/gutenberg/build/core-blocks/index.js?ver=1533571140:12:64471)
at dg (https://original-smelt.jurassic.ninja/wp-content/plugins/gutenberg/vendor/react-dom.min.82e21c65.js:110:434)
at eg (https://original-smelt.jurassic.ninja/wp-content/plugins/gutenberg/vendor/react-dom.min.82e21c65.js:113:462)
at jc (https://original-smelt.jurassic.ninja/wp-content/plugins/gutenberg/vendor/react-dom.min.82e21c65.js:131:280)
at gc (https://original-smelt.jurassic.ninja/wp-content/plugins/gutenberg/vendor/react-dom.min.82e21c65.js:127:223)
at vb (https://original-smelt.jurassic.ninja/wp-content/plugins/gutenberg"
}
```

Also, this seems to effect the image block too, so I'll update the title to reflect that.

[brandonpayton]

I can reproduce this with 3.4 but no longer on master. 🙌