blog post test

example1.js

export default function(file, api) {
  const j = api.jscodeshift;
  const {expression, statement, statements} = j.template;

  const convertToTemplateString = p => {
    const quasis = [
      j.templateElement({ cooked: '', raw: ''}, false),
      j.templateElement({ cooked: '', raw: ''}, false),
      j.templateElement({ cooked: '', raw: ''}, true)
    ]

    const expressions = [ p.node.left, p.node.right ]

    return j.templateLiteral(quasis, expressions)
  }

  return j(file.source)
    .find(j.BinaryExpression, { operator: '+' })
    .replaceWith(convertToTemplateString)
    .toSource();
};

example2.js

const map = (list, fn, acc = []) {
  if (list.length === 0) {
    return acc
  }

  const [ a, ...as ] = list

  return map(as, fn, acc.concat(fn(a)))
}