JSON templating

Create a template file json file, example:

template.json

{
    "field1": "value1",
    "field2": "value2",
    "field3": "value3"
}

Create a parameters directory with parameter json files, example:

params/p1.json

{
    "field2": "other value 1"
}

params/p2.json

{
    "field2": "other value 2"
}

Create the output directory, example:

mkdir out

Run the program:

npm start template.json params out

This will combine the template with the parameters and save an output file for each parameter file. The output directory will contain:

out/p1.json

{
    "field1": "value1",
    "field2": "other value 1",
    "field3": "value3"
}

out/p2.json

{
    "field1": "value1",
    "field2": "other value 2",
    "field3": "value3"
}