Package Exports

json0-ot-diff

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Readme

JSON0 OT Diff

Finds differences between two JSON object and generates operational transformation (OT) operations for transforming the first object into the second according to the JSON0 OT Type.

The current implementation supports list/object insertion/deletion (i.e. li, ld, oi, od) out of the box.

var jsondiff = require("./json0-ot-diff");

var diff = jsondiff(
    ["foo", "bar", 1, 2, 3],
    ["foo", "quux", 1, 2]
);
console.log(diff);

> [
>	{ p: [ 1 ], ld: 'bar', li: 'quux' },
>	{ p: [ 4 ], ld: 3 }
>]

String insertion/deletion (i.e. si, sd) operations are generated for string mutations if you provide a reference to diff-match-patch.

var diffMatchPatch = require("diff-match-patch");
var diff = jsondiff(
    ["foo", "The only change here is at the end.", 1, 2, 3],
    ["foo", "The only change here is at the very end.", 1, 2],
    diffMatchPatch
);
console.log(diff);

> [
> { p: [ 1, 31 ], si: 'very ' },
> { p: [ 4 ], ld: 3 }
>]

This was developed for JsonML with Webstrates in mind, but could be applicable in other situations.