Script read input write to output

Drag Script element into the flow

Select New script folder by right clicking the Script element

Pick location and set a Script ID

Open script folder location

Open script folder in code editor

Open file named main.ts

import fs from 'fs'

async function jobArrived(s: Switch, flowElement: FlowElement, job: Job) {
    const incomingPath = await job.get(AccessLevel.ReadWrite);

    // with extension job.getName(false) without true job.getName(true)
    const jobName = job.getName(false) 

    const readFile = fs.readFileSync(incomingPath, { encoding:'utf8' });
    let newContent = "";
    
    // Edit content here
    newContent = readFile.replace("Incoming", "Outgoing")

    // write content back
    fs.writeFileSync(incomingPath, newContent);

    // output and if no need to rename use  await job.sendToSingle()
    await job.sendToSingle("outgoing.txt");
}

Always run command in the terminal when changes to script is done

SwitchScriptTool.exe --transpile .

don't forget to cd into the script folder first before running command.
path of this example the script folder path is:
C:\Users\prinect\Desktop\SwitchScripts\SampleScript\SampleScript

Switch Flow

Incoming document content

Outgoing document content