Which NPM modules are preinstalled in AWS Lambda

lambda_bash.mjs

/*
@see https://alestic.com/2014/11/aws-lambda-environment/
*/

import * as cp from "child_process";
import util from "util";
const exec = util.promisify(cp.exec);

export const handler = async (event) => {
  try {
    // Extract the command from the event
    const command = event.command;

    // Execute the command and capture the output
    //const results = cp.execSync(command).toString();

    const results = await exec(command);

    const stdout = results.stdout.split("\n");
    const stderror = results.stderr.split("\n");
    console.log("stdout", stdout);
    console.log("stderror", stderror);


    // Return success response with command output
    return {
      statusCode: 200,
      body: results,
    };
  } catch (error) {
    // Return error response
    return {
      statusCode: 500,
      body: error.message,
    };
  }
};

Screenshot 2024-04-17 at 6.43.03 PM.png

Screenshot 2024-04-17 at 7.05.24 PM.png

Purpose:

This command is designed to inspect globally installed npm packages and the node paths associated with them in an AWS lambda function

Description:

Check Global NPM Packages:
npm ls -g: Lists all globally installed npm packages.

Display Node Paths:
echo "Node paths: ${NODE_PATH}": Prints the node paths associated with the globally installed npm packages.

Iterate through Node Paths:
dirs=$(echo $NODE_PATH | tr ':' '\\n' | sort): Extracts each directory from the node paths and sorts them for systematic inspection.

Inspect Each Directory:
For each directory obtained from the node paths:

for dir in $dirs; do ... done: Loop iterates through each directory.

echo "---Directory: ${dir} ---\n": Prints the directory being inspected.

(ls -1 $dir 2>&1 || true): Lists the contents of the directory (if it exists). Any errors are also captured and displayed.