tidy-template

Indentation fixer for [nested] multiline JavaScript template literals

Installation

npm install tidy-template

Usage

Node v6.0.0+ is required.

const tidy = require('tidy-template');

The first line, last line, and common indentation are removed.

tidy`
  1
  2
`;
// '1\n2'

Relative indentation is preserved.

tidy`
  1
    2
`;
// '1\n  2'

Relative indentation of interpolated multiline strings is preserved.

tidy`
  0
    ${'1\n  2'}
`;
// '0\n  1\n    2'

The content and last line can be indented as much or as little as you like.

        tidy`
          1
            2
        `; 
// '1\n  2'

tidy`
1
  2
`; 
// '1\n  2'

Tabs can be used instead of spaces.

tidy`
\t1
\t\t2
`;
// '1\n\t2'

Empty and whitespace-only lines are ignored when calculating common indentation, but are included when removing it.

tidy`

\t
\t\t1
\t\t\t2
\t\t\t\t
`;
// '\n\n1\n\t2\n\t\t'

Errors

TidyTemplate throws errors to help ensure correct usage and results.

1. The template literal backticks must be on separate lines from the content. This eliminates ambiguity around indentation and trailing newlines.

   Don't do this:

   tidy`1
          2`;
   // Error

   Or this:

   tidy`
     1
       2`;
   // Error

   Or this:

   tidy`1
          2
   `;
   // Error

2. TidyTemplate must be used as a tag, without parentheses. This allows the indentation of interpolated values to be adjusted.

   Don't do this either:

   tidy(`
     1
       2
   `);
   // Error