Space after `function` breaks highlighting

[boycce]

Space after function seems to break highlighting for a method inside an object literal.

Here are the scope names that are being returned for the method names:

# First (good)
source.js meta.object-literal.js.fjsx15 meta.block.js.fjsx15 meta.declaration.function.js.fjsx15 meta.object-literal.key.js.fjsx15 entity.name.function.js.fjsx15

# Second (bad)
source.js meta.object-literal.js.fjsx15 meta.block.js.fjsx15 meta.object-literal.key.js.fjsx15 string.unquoted.js.fjsx15