codecov-action/index.js

const core = require('@actions/core');
const github = require('@actions/github');


const { exec } = require('child_process');

try {
  // `who-to-greet` input defined in action metadata file
  const name = core.getInput('name');
  console.log(`Name: ${name}!`);
  
  const token = core.getInput('token');
  console.log(`Token: ${token}!`);

  const flags = core.getInput('flags');
  console.log(`Flags: ${flags}!`);

  const file = core.getInput('file');
  console.log(`File: ${file}!`);

  // Get the JSON webhook payload for the event that triggered the workflow
  const payload = JSON.stringify(github.context.payload, undefined, 2)
  console.log(`The event payload: ${payload}`);

  const command = `bash <(curl -s https://codecov.io/bash) -t ${token} -n ${name} -F ${flags} -f ${file}`
  exec(command, (err, stdout, stderr) => {
    if (err) {
      //some err occurred
      console.error(err)
    } else {
     // the *entire* stdout and stderr (buffered)
     console.log(`stdout: ${stdout}`);
     console.log(`stderr: ${stderr}`);
    }
  });

} catch (error) {
  core.setFailed(error.message);
}