line-diff

Compare strings line by line.

☁️ Installation

$ npm i --save 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()
);

📝 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

Have an idea? Found a bug? See how to contribute.

💰 Donations

Another way to support the development of my open-source modules is to set up a recurring donation, via Patreon. 🚀

PayPal donations are appreciated too! Each dollar helps.

Thanks! ❤️

💫 Where is this library used?

If you are using this library in one of your projects, add it in this list. ✨

• diffr—CLI diff tool for files, text, and JSON with human readable output.

📜 License

MIT © Ionică Bizău