How to append values to the PATH environment variable in NodeJS?

Why don't you just get the environment variable and then append to it?

I.e.

const {spawnSync} = require("child_process");const current_value = process.env.PATH;const new_path_value = current_value.concat(";", "/some/new/path");var result = spawnSync('setx', ['-m', 'PATH', new_path_value])// STDOUTvar stdOut = result.stdout.toString();console.log(stdOut)// STDERRvar stdErr =  result.stderr.toString();if(stdErr === '') {    console.log('Successfully set environment variable')} else {    console.log(`ERROR: ${stderr}`)}

Update "/some/new/path" and run this as admin as the link you provided suggests and it should work.

Run your script with the admin permission:

• Open cmd or PowerShell with admin
• Run node your_script.js
• To append PATH variable, you can set value is : %PATH%;your_new_value here (%PATH% get old value)

If you run with electron app, you should require admin permission.

Don't forget setx run on window

I don't have rights to modify my registry, and I also would rather not call an OS command such as setx.

The following adds an additional component to the Windows PATH. I then ran Selenium, which uses the new setting.

// Display current value of PATHconst current_value = process.env.PATH;console.log("PREV VALUE:")console.log(current_value)// Add the additional entryconst addl_entry = String.raw`\my\new\path\component`process.env["PATH"] = addl_entry + ";" + current_value// Display the new valueconsole.log("NEW VALUE:")console.log(process.env.PATH)