Function createDestructPattern

src/transform/destructParam.js:124–129

(exs)

// and parsing it with Recast and extracting the ObjectPatter node.
// Feeding this back to Recast will preserve the formatting.
function createDestructPattern(exs) {
  const props = uniqPropNames(exs).join(', ');
  const js = `function foo({${props}}) {};`;
  const ast = parse(js, {parser});
  return ast.program.body[0].params[0];
}