json-joy/esm/json-cli/json-patch.js

Collection of libraries for building collaborative editing apps.

import { readFileSync } from 'fs';
import { validateOperation } from '../json-patch';
import { applyPatch } from '../json-patch/applyPatch';
import { createMatcherDefault } from '../json-patch/util';
try {
    const buf = readFileSync(0);
    const doc = JSON.parse(buf.toString());
    const patch = JSON.parse(process.argv[2]);
    patch.forEach(validateOperation);
    const res = applyPatch(doc, patch, { mutate: true, createMatcher: createMatcherDefault });
    process.stdout.write(JSON.stringify(res.doc, null, 4) + '\n');
}
catch (error) {
    const output = error instanceof Error ? error.message : String(error);
    process.stderr.write(output + '\n');
    process.exit(1);
}