[FlexJs]: Error: Access of possibly undefined property JSON

[davide . prina]

Hi all,

I'm try to compile FlexJs on a Debian GNU/Linux Stretch, but I have the 
following errors:

compile:
     [echo] Compiling libs/Core.swc
     [echo] FLEX_HOME: /home/flex/FlexJS/flex-asjs
     [echo] FALCON_HOME: /home/flex/FlexJS/flex-asjs/../flex-falcon/compiler
     [echo] playerglobal.version: 11.1
     [echo] target: 
/home/flex/FlexJS/flex-asjs/frameworks/projects/Core/target/Core.swc
     [echo] copy to: /home/flex/FlexJS/flex-asjs/frameworks/libs/Core.swc
    [compc] Loading configuration: 
/home/flex/FlexJS/flex-asjs/frameworks/projects/Core/src/main/config/compile-as-config.xml
    [compc] 
    [compc] 
    [compc] 
/home/flex/FlexJS/flex-asjs/frameworks/projects/Core/src/main/flex/org/apache/flex/core/SimpleValuesImpl.as(167):
 col: 20 Error: Access of possibly undefined property JSON.
    [compc] 
    [compc]             return JSON.parse("{" + value + "}");
    [compc]                    ^
    [compc] 
    [compc] 
/home/flex/FlexJS/flex-asjs/frameworks/projects/Core/src/main/flex/org/apache/flex/geom/Rectangle.as(261):
 col: 21 Error: Access of possibly undefined property JSON.
    [compc] 
    [compc]                     var obj:Object = JSON.parse(str);
    [compc]                                      ^
    [compc] 

BUILD FAILED
/home/flex/FlexJS/flex-asjs/build.xml:499: The following error occurred while 
executing this line:
/home/flex/FlexJS/flex-asjs/frameworks/build.xml:80: The following error 
occurred while executing this line:
/home/flex/FlexJS/flex-asjs/frameworks/build.xml:186: The following error 
occurred while executing this line:
/home/flex/FlexJS/flex-asjs/frameworks/projects/Core/build.xml:81: compc task 
failed.


I have try to looking for a solution on internet, but I have failed :-(
I have try all the combination of the following:
* import com.adobe.serialization.json;
* return com.adobe.serialization.json.JSON.parse("{" + value + "}");

without success.

What can I do to resolve this problem?

I have "echo":
* playerglobal.version <- it is corrected installed
* target <- it is building the Core.swc
* where to copy

And I have see that there is a Core.swc here:
$ find  -iname Core.swc
./flex-sdk/frameworks/libs/core.swc

Eventually I can use this core.swc?

Or, I have also installed the binary, and I have found these:

$  find  -iname Core.swc
./apache-flex-flexjs-0.7.0-bin/frameworks/libs/Core.swc
./apache-flex-flexjs-0.7.0-bin/frameworks/projects/Core/target/Core.swc
./AirSDK/frameworks/libs/core.swc

Eventually I can use one of these?

I prefer to solve the problem and have a successfully compilation.

Thanks
Davide