Use array in JSON configuration file in serverless framework - serverless-framework

Question

My serverless framework is trying to set an environment variable, CONFIG, to be contents of a JSON object.
My serverless.yml has this entry:
environment:
${file(./config.json)}
and my config.json looks like this:
{
"VARIABLE1": "value1",
"VARIABLE2": "value2",
"INT_VARIABLE": 3
"BOOLEAN_TEST": true
}
This seems to work just fine. ie:
console.log(process.env.VARIABLE1) outputs value1
console.log(process.env.INT_VARIABLE) outputs 3 (as a string... but I can convert if needed)
console.log(process.env.BOOLEAN_TEST) outputs true (as a string... but that's not the end of the world)
But when I go to add an array to the config.json, making the config.json look like this:
{
"VARIABLE1": "value1",
"VARIABLE2": "value2",
"INT_VARIABLE": 3
"BOOLEAN_TEST": true
"ARRAY_TEST": ["arrVal1", "arrVal2", "arrVal3"]
}
I get the following error:
Warning: Invalid configuration encountered at
'provider.environment.ARRAY_TEST': unsupported configuration format
How can I add an array as a environmental variable in serverless framework? (same basic question about adding sub-objects)

Answer 1

I believe you can split the elements by a delimiter:
serverless.yml
environment:
VARIABLE_1: ${file(./config.json):VARIABLE_1}
ARRAY_TEST:
"Fn::Split":
- ","
- ${file(./config.json):ARRAY_TEST}
config.json
{
"VARIABLE_1": "value1",
"ARRAY_TEST": "arrVal1,arrVal2,arrVal3"
}