kpdecker/jsdiff

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

9197 stars · 539 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

jsdiff is a JavaScript library that computes differences between two texts using the Myers O(ND) diff algorithm. It provides functions to diff text at character, word, line, and sentence granularity, and can generate unified diff patches.

Use cases

• compare two strings and show what changed
• generate unified diff patches in javascript
• highlight word-level changes between two versions of text
• diff two files line by line in node
• build a text comparison or revision history feature
• compute character-level differences for inline text highlighting

When to choose

• you need text diffing in JavaScript or TypeScript in Node or the browser
• you want change objects or unified patch output from comparing two texts
• you need configurable tokenization such as case-insensitive or word-level diffs

When to avoid

• you need to diff structured data like JSON trees or ASTs rather than plain text
• you need binary file diffing or three-way merge tooling
• you are outside the JavaScript ecosystem

Facets

library · maturity stable

parser developer-tools developer-tools text-editors browser cross-platform text-diff diff-algorithm myers-diff patch-generation javascript algorithms nodejs

Member repositories

For agents

markdown · JSON · MCP: product_card(name="kpdecker/jsdiff")