assertion-methods.js

// Determine which `assert.x` methods are used in a codebase
// Run with jscodeshift using the --dry option

export default function transformer(file, api) {
  const { jscodeshift: j, stats} = api;
  const root = j(file.source);

  root.find(j.CallExpression, {
  	callee: {
    	object: { name: 'assert' } 
    }
  }).forEach(p => {
    stats(p.node.callee.property.name);
  });
};