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  • License MIT

Compare strings line by line.

Package Exports

  • line-diff

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (line-diff) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

Line Diff - Compare strings line by line.

line-diff

Compare strings line by line.

Installation

$ npm install line-diff

Example

// Dependencies
var LineDiff = require("line-diff")
  , Fs = require("fs")
  ;

// Show differences between the two files
console.log(
    LineDiff(
        Fs.readFileSync(__dirname + "/1.txt", "utf-8")
      , Fs.readFileSync(__dirname + "/2.txt", "utf-8")
    ).toString()
);

console.log(
    LineDiff(
        Fs.readFileSync(__dirname + "/1.txt", "utf-8")
      , Fs.readFileSync(__dirname + "/2.txt", "utf-8")
      , 3
    ).toString()
);

Output:

   not modified
 - old
 - deleted
 -
 - 12345
 + new
 + 1234

   not modified
   new
 - deleted
 -
 - 12345
 + 1234

Documentation

Change(oldLine, addedLine, sensitivity)

A private function to compare two lines.

Params

  • String oldLine: The old line value.
  • String addedLine: The new line.
  • Number sensitivity: The diff sensitivity.

Return

  • Change The Change object:
  • _ (Array): An array with the old line and the new line.
  • changes (Number): How many changes are there, calculated with the levenshtein distance algorithm.
  • modified (Boolean): A boolean value representing if the old line was modified or not.

Diff(oldLines, newLines, sensitivity)

Compares strings line by line.

Params

  • String|Array oldLines: The old lines.
  • String|Array newLines: The new lines.
  • Number sensitivity: A number representing how many changes should be there to consider that a line was changed (default: 0).

Return

  • Diff The Diff object containing:
  • old_lines (Array): The old lines.
  • new_lines (Array): The new lines.
  • sensitivity (Number): The diff sensitivity.
  • changes (Array): An array of Change objects.
  • toString (Function): A function to stringify the diff.

toString()

Converts the lines comparison into a string.

Return

  • String The stringified diff.

How to contribute

  1. File an issue in the repository, using the bug tracker, describing the contribution you'd like to make. This will help us to get you started on the right foot.
  2. Fork the project in your account and create a new branch: your-great-feature.
  3. Commit your changes in that branch.
  4. Open a pull request, and reference the initial issue in the pull request message.

License

See the LICENSE file.