nx/src/utils/git-utils.index-filter.js

The core Nx plugin contains the core functionality of Nx like the project graph, nx commands and task orchestration.

/**
 * This is meant to be used with `git filter-branch --index-filter` to rewrite
 * history such that only commits related to the subdirectory is kept.
 *
 * Example:
 * NX_IMPORT_SOURCE=<source> git filter-branch --index-filter 'node git-utils.index-filter.js' --prune-empty -- --all
 */
try {
    const { execSync } = require('child_process');
    // NOTE: Using env vars because Windows PowerShell has its own handling of quotes (") messes up quotes in args, even if escaped.
    const src = process.env.NX_IMPORT_SOURCE;
    execSync('git read-tree --empty', { stdio: 'inherit', windowsHide: false });
    execSync(`git reset ${process.env.GIT_COMMIT} -- "${src}"`, {
        stdio: 'inherit',
        windowsHide: false,
    });
}
catch (error) {
    console.error(`Error executing Git commands: ${error}`);
    process.exit(1);
}