snapshot-fs/dist/esm/export.js

Create a filesystem snapshot for use with memfs

import { memfs } from 'memfs';
import nodeFs from 'node:fs';
import { readSnapshot, } from './read.js';
import { toTree } from './tree.js';
const colorOverwrite = (str) => `\x1b[91m${str}\x1b[0m`;
const colorNew = (str) => `\x1b[92m${str}\x1b[0m`;
/**
 * Exports a snapshot to the _real_ filesystem.
 *
 * Creates the directory if it does not exist.
 *
 * @remarks
 * `memfs` sure makes "dry runs" easier, doesn't it?
 * @param kind Snapshot kind
 * @param data Snapshot data
 * @param options Options
 */
export async function exportSnapshot(kind, data, { dest = process.cwd(), dryRun, separator } = {}) {
    let vol;
    let fs;
    if (dryRun) {
        ({ fs, vol } = memfs());
    }
    else {
        fs = nodeFs;
    }
    await fs.promises.mkdir(dest, { recursive: true });
    await readSnapshot(kind, data, { fs, separator, source: dest });
    if (dryRun) {
        const msg = `[INFO] Dry run!
       → Dest dir will be recursively created
       → All extant files will have permissions reset
       → Red or "!": Overwritten due to size mismatch
       → Green or "+": New files\n`;
        // FIXME: supports-color is ESM-only
        const supportsColor = await import('supports-color');
        const [formatOverwrite, formatNew] = supportsColor.default.stderr
            ? [colorOverwrite, colorNew]
            : [];
        console.error(msg);
        console.error(toTree(vol, { formatNew, formatOverwrite, separator }));
    }
}
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