Alan Agius 8bded93d8a fix(@ngtools/webpack): import as results in the alias being undefined with Typescript 3.2
When using the `specifier.propertyName` with `typeChecker.getSymbolAtLocation` it will return a more detailed symbol then we originally have in the `usedSymbols` set.

We should probably use `symbol.id` to actually check if the symbols are the same, however the `id` is not exposed in the Symbol interface.

Using `node.name` will return the same symbol that we have stored in the set.

Fixes #13212
2018-12-19 10:55:05 -08:00
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