codemods

canjs-canjs-deps.js

// latest versions from canjs/canjs - make sure `npm install can` first
const canjs = require('can/package.json');

function updateVersions(deps, canjs) {
    const newDeps = {};
    
    Object.keys(deps).forEach((key) => {
        // if dep exists in canjsDeps, set it to that version
        // otherwise, keep existing version
        newDeps[key] = canjs[key] || deps[key];
    });
    
    return newDeps;
}

module.exports = function transformer(file, api) {
  let src = file.source;
  
  try {
    src = JSON.parse(src);
      
    src.dependencies = updateVersions(src.dependencies, canjs.dependencies);
    src.devDependencies = updateVersions(src.devDependencies, canjs.devDependencies);
          
    // print result with 2-space indentation
    src = JSON.stringify(src, null, 2) + '\n';
  } catch(e) {
    console.error(e);
  }
  
  return src;
};