Task

You are trying to create a small templating engine from scratch, and would like to parse the following template :

Hello {name}

In order to be able to call render({name: "John"})

in order to get as a result :

Hello John

You can test the software that was started, by running :

node index.js input.txt

You should see that there is a bug.

First task : Please find the root cause of the bug and fix it.

Second task : A customer of yours writes you an email with following question, please reply to him.

Dear Supplier,

I hope you're having a great week ! I have just tried your templating software and it works fine !

I have a bunch of users who are using some other old and archaic software and the tags that my users are used to have is [[name]].

Could you please add an option to your library to allow to parse those instead ?

All the Best,

John Giovanni Piazza Quaranta del Folia, 40137 , Rome phone: +3905414124 www.comelia.com Please consider the environment before printing this email

Third task : Please make sure that it is also possible to have the same delimiter for the starting and ending of tags, ie be able to do %name%

Sometimes, your customers have some errors in their templates :

For example, following template where they forgot to close a tag :

Lorem ipsum dolor sit amet
Hello {name, what's up ?

and following template where they mistyped the closing tag.

{name} is {age{ year old today.
Lorem ipsum dolor sit amet

Fourth task : How would you change the software so that it will now highlight the errors ?

Fifth task : Add supports for loops :

{#users}
- {name}
{/}

with render({users: [{ name: "John"}, {name: "Mary"}]})

should output :

- John
- Mary