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esdiff lists no main file and has no index.js, so it can't be directly required. If this is a mistake, please let us know. It may however contain internal files that you can require manually:

// require("esdiff/[??]")

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esdiff v0.0.1

Compare two javascript files at the ast level

Install as command-line tool

npm install -g esdiff

Usage: esdiff comparison file1.js file2.js

    @param comparison: --chars | --words | --lines | --css

    Example: esdiff --chars file1.js file2.js

Example

esdiff --words samples/test1_a.js samples/test1_b.js

Comparing: samples/test1_a.js, samples/test1_b.js
--------------------------------------------------------------------------------
    function x() {
        alert('byehi');
    }
--------------------------------------------------------------------------------

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