NPM package diff (pkdiff)

Compare npm package releases and tarball. Show diff between package versions in browser or as unix diff output.

Requirements:

• node > 8.6.0
• GNU diffutils (diff)
• xargs

Usage:

npm install -g pkdiff

pkdiff <new-version> <old-version>

Basic examples:

show diff in browser:

npx pkdiff react 16.11.0

npx pkdiff react@next 16.11.0

diff as JSON:

npx pkdiff react@16.12.0 16.11.0 --quite --format=json > diff.json

diff as unix Diff:

npx pkdiff react@16.12.0 16.11.0 -f diff

exclude files from diff:

npx pkdiff react@latest 16.11.0 --exclude='\.json$'

Compare local packed packages:

• npx pkdiff your-package@latest ./your-packed-package.tgz
• npx pkdiff ./your-packed-package1.tgz ./your-packed-package2.tgz

Output formats:

• json
• html (see Diff2html example)
• diff (UNIX diff output)

Options

• -x, --exclude [string] - exclude files (JS RegExp)
• -f, --format [diff|json|html] - output format (default: "html")
• -o, --output [path] - output destination (default: false)
• -c, --no-exit-code - returns code 0 if found differences
• -q, --quite - turn off actions log (default: false)
• --fast-check - will try to find diff in any file and return result (default: false)
• --registry [string] - npm registry url
• --prefer-offline - npm cli preffer-offline
• -h, --help - output usage information

JS API

const {
    hasDiff,
    // result as "unix diff" string
    // if you don't logs set it to false
    compare,
    // diff as json
    compareJSON,
    setLogQuite
} = require('pkdiff');

/**
 * @param {string} package1 - new package
 * @param {string} package2 - old package (can be as version or tag)
 * @param {Object} options - comparison options
 * @param {boolean} options.full=true - flag for full check,
   if "false" compare function will stop on first diff and returns boolean (package equals: true or has diff: false)
 * @param {function} options.validate - call validate diff function if found diff
 * @param {string|RegExp} options.exclude - JS RegExp
 * @param {boolean} options.toStdOut - all diff output to stdOut
 *
 * @returns {Promise<boolean|string|undefined>}
*/


// check diff between package versions
const result = hasDiff('react', '16.8.0', { exclude: 'package\\.json$' });
const result = hasDiff('react', '16.8.0', { exclude: '\\.(md|json)$' });

// with validate function
const result = hasDiff('pkg1@1.0.0', '0.9.0', {
  // will call validate function after found diff in this file
  validate: (newVersionFilePath, oldVersionFilePath) => {
    if (newVersionFilePath.include('/package.json')) {
      const newPkgJSON = require(newVersionFilePath);
      const oldPkgJSON = require(oldVersionFilepath);

      return assert.deepEqual(newPkgJSON.dependecies, oldPkgJSON.dependecies);
    }

    // if isn't package.json
    return false;
  }
});

// get diff as JSON
const diffJSON = compareJSON('pkg1@1.0.0', '0.9.0');

const changedFiles = diffJSON.map(fileDiff => {
  return {
    newVersion: fileDiff.newName,
    oldVersion: fileDiff.oldName
  }
})