JavaScript Diff Parser


Credit: @eightballart

Parse unified diffs with JavaScript

Installation

what-the-diff is available via npm

npm install what-the-diff

Usage

``javascript
let {parse} = require('what-the-diff')

var str = diff --git file.txt file.txt
index 83db48f..bf269f4 100644
--- file.txt
+++ file.txt
@@ -1,3 +1,3 @@
line1
-line2
+new line
line3

parse(diffStr)

// returns
{
oldPath: 'file.txt',
newPath: 'file.txt',
oldMode: '100644',
newMode: '100644',
status: 'modified',
hunks: [
{
oldStartLine: 1,
oldLineCount: 3,
newStartLine: 1,
newLineCount: 3,
lines: [
' line1',
'-line2',
'+new line',
' line3'
]
}
]
}
`

If the diff includes a similarity index line (from a detected copy or rename), the similarity` property will be set, and will be a number.