How to insert newlines between some objects when saving array to a file using disassembler + stringer?

[JCMais]

I have a large JSON file (a performance profile trace generated by Chrome's devtools) that I am using strema-json to parse.

After I have done some changes to it, I am saving it back to the disk using:

        const trace = ...
        let hasSentObj = false
        chain([
            new Readable({
                objectMode: true,
                read(_size) {
                    this.push(hasSentObj ? null : trace)
                    hasSentObj = true
                },
            }),
            disassembler(),
            stringer(),
            fs.createWriteStream(path),
        ])

The above is working fine, but I noticed it outputs the whole JSON to the first line of the file. Such as:

{"traceEvents": [{"args": {}, ...otherProps },{"args": {}, ...otherProps },{"args": {}, ...otherProps }]}

I wanted to know if it is possible to change this, so it could input every object inside the traceEvents array to a separate line. Ex:

{"traceEvents": [
{"args": {}, ...otherProps },
{"args": {}, ...otherProps },
{"args": {}, ...otherProps }
]}

Is this possible to do using this library?

[uhop]

There is no component that can produce human-readable output. It should be easy to add one. At some point, I thought about one but couldn't decide on a format or supported formatting features. For example, you keep array elements on separate lines together, but how to treat arrays in arrays? Remember that we should provide a generic solution suitable for data of different shapes.

There is one component that does something like that — the JSONL stringer: jsonl/Stringer. It should be possible to build something up using code from both stringers.

In general, the JSON formatting was a moot point for me because I worked with files I could not open in any non-streaming editor nor I could conceivably look at due to their sheer size.