DMP: Diff Match Patch

Development status: Production-ready.

Node.js module based on Neil Fraiser's excellent Diff Match Patch.

Install

Add dmp to your package.json or npm install dmp.

This module requires Node.js v4.0 or later.

Use

const DMP = require("dmp");
const dmp = new DMP();

let patches = dmp.patch_make("", "abcd");

console.log(dmp.patch_toText(patches));
// @@ -0,0 +1,4 @@
// +abcd

let patch_text = "@@ -0,0 +1,4 @@\n+abcd\n";
patches = dmp.patch_fromText(patch_text);

let result = dmp.patch_apply(patches, "");
console.log(result);
// [ 'abcd', [ true ] ]

Configure

After creating a DMP object, you can tweak a few attributes. Don't mess with these unless you know what you're doing!

dmp.Patch_DeleteThreshold = 0.375;
dmp.Match_Threshold = 0.375;
dmp.Match_Distance = 100;

Default values are:

Patch_DeleteThreshold = 0.5;
Match_Threshold = 0.5;
Match_Distance = 1000;