@neodx/vfs/cjs/plugins/json.cjs

Simple virtual file system - working dir context, lazy changes, different modes, integrations and moreover

'use strict';

var fs = require('@neodx/fs');
var std = require('@neodx/std');
var createVfsPlugin = require('../_internal/create-vfs-plugin-1jK9qNm1.cjs');

const createFileApi = (vfs, path) => ({
  path: vfs.resolve(path),
  ...std.mapKeysToObject(inheritedApis, key => vfs[key].bind(vfs, path))
});
const inheritedApis = ['tryRead', 'exists', 'delete', 'rename', 'write', 'read'];

function json() {
  return createVfsPlugin.createVfsPlugin('json', vfs => {
    vfs.jsonFile = path => createJsonFileApi(vfs, path);
    vfs.readJson = (path, options) => readVfsJson(vfs, path, options);
    vfs.writeJson = (path, json, options) => writeVfsJson(vfs, path, json, options);
    vfs.updateJson = (path, updater, options) => updateVfsJson(vfs, path, updater, options);
    return vfs;
  });
}
function createJsonFileApi(vfs, path) {
  return {
    ...createFileApi(vfs, path),
    read: options => readVfsJson(vfs, path, options),
    tryRead: options => readVfsJson(vfs, path, options).catch(() => null),
    write: (json, options) => writeVfsJson(vfs, path, json, options),
    update: (updater, options) => updateVfsJson(vfs, path, updater, options),
    experimental_toResource: async (defaultValue, options) => {
      const data = (await readVfsJson(vfs, path, options)) ?? defaultValue;
      return {
        data,
        [Symbol.asyncDispose]: async () => await writeVfsJson(vfs, path, data, options)
      };
    }
  };
}
async function readVfsJson(vfs, path, options) {
  try {
    return fs.parseJson(await vfs.read(path, 'utf-8'), options);
  } catch (error) {
    throw new Error(`Cannot parse ${path}:\n${error.message}`);
  }
}
async function writeVfsJson(vfs, path, json, options) {
  return await vfs.write(path, fs.serializeJson(json, options));
}
async function updateVfsJson(vfs, path, updater, options) {
  // TODO Implement support for empty, damaged, or nonexistent files
  const current = await readVfsJson(vfs, path, options);
  return await writeVfsJson(vfs, path, (await updater(current)) ?? current, options);
}

exports.createJsonFileApi = createJsonFileApi;
exports.json = json;
exports.readVfsJson = readVfsJson;
exports.updateVfsJson = updateVfsJson;
exports.writeVfsJson = writeVfsJson;
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