Summary: This code generation executes eagerly and these functions are fairly large and takes time to compile.
However, I'm mostly doing this change because it significantly increases the Prepack binary file size.
In theory, there might be a slight impact on the first use of these interpolators but I couldn't really tell.
An alternative would be to create a factory that is called by the components at an appropriate time, or to just refactor the whole thing to use Animated.
I didn't want to dig too deeply for a single component though.
public
Reviewed By: vjeux
Differential Revision: D2687296
fb-gh-sync-id: 6fc8cdf54dfb6f0b50c11db973d67d114bbc7400
Summary:
### TL/DR:
```
a="function() {return [22]}"
a.substring(a.indexOf("{")+1,a.indexOf("}")-1) // "return [22"
a.substring(a.indexOf("{")+1,a.indexOf("}")) // "return [22]"
```
### In long: why it is broken now and why it worked before:
I've installed latest iOS 9 and started to see really strange issues when code is minified:
```
Invariant Violation: Application app has not been registered."
2015-06-18 16:29:05.898 [error][tid:com.facebook.React.JavaScript] "Error: Unexpected identifier 'transformMatrix'. Expected ']' to end a subscript expression
```
After some investigation it turns out that new Safari returned a bit different string representation for a MatrixOps.unroll. On old safari:
`function(e,t,n,r,o,i,a,s,u,c,l,p,d,h,f,m,g){t=e[0],n=e[1],r=e[2],o=e[3],i=e[4],a=e[5],s=e[6],u=e[7],c=e[8],l=e[9],p=e[10],d=e[11],h=e[12],f=e[13],m=e[14],g=e[15];}`
while using latest iOS:
`function (e,t,n,r,o,i,a,s,u,c,l,p,d,h,f,m,g){t=e[0],n=e[1],r=e[2],o=e[3],i=e[4],a=e[5],s=e[6],u=e[7],c=e[8],l=e[9]
Closes https://github.com/facebook/react-native/pull/1672
Github Author: Artem Yarulin <artem.yarulin@fessguid.com>
Test Plan: Imported from GitHub, without a `Test Plan:` line.
Justas Brazauskas
Sebastian Markbage
Artem Yarulin
Spencer Ahrens
Christopher Chedeau