Registry / database / monk-middleware-fields

monk-middleware-fields

library0.2.0jsnpmunverified

A middleware for the Monk MongoDB library that parses and filters document fields. Version 0.2.0 is the latest stable release. This package is part of the Monk middleware ecosystem and extracts the field selection logic into a separate module, allowing reusable field filtering in queries and updates. Unlike manual field projection, monk-middleware-fields provides a declarative way to include or exclude fields consistently across operations. It is designed to work with Monk versions that support middleware (v5+). No active development observed; project appears unmaintained.

database

npm install monk-middleware-fields

github ↗package ↗

INSTALL

IMPORT

SIG · MONK-MIDDLEWARE-FI

monk-middleware-fields

databasejavascriptv0.2.0

Install

—

Import

—

Disk

—

Pass rate

0/ 6

Env Coverage0 / 6

glibc

18–22

musl

18–22

Install & Compatibility

Where this runs

tested against v? · npm install

Install × environment matrix

Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux

musl

node 18–226 runs

build_error

glibc

node 18–226 runs

build_error

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

fields

✓ import fields from 'monk-middleware-fields'

✗ const { fields } = require('monk-middleware-fields')

Package has a default export.

fields

✓ const fields = require('monk-middleware-fields')

✗ const fields = require('monk-middleware-fields').default

In CommonJS, just require the module; no .default needed.

Monk

✓ import monk from 'monk'

✗ import { Monk } from 'monk'

Monk uses default export.

Shows how to apply the fields middleware to a Monk collection and use field filtering in queries.

import monk from 'monk'; import fields from 'monk-middleware-fields'; const db = monk('localhost/mydb'); const users = db.get('users', { middlewares: [fields()] }); // Insert a user await users.insert({ name: 'John', email: 'john@example.com', age: 30 }); // Query with fields: only name and email const result = await users.findOne({}, { fields: { name: 1, email: 1 } }); console.log(result); // { _id: ..., name: 'John', email: 'john@example.com' } // Or exclude fields const result2 = await users.findOne({}, { fields: { age: 0 } }); console.log(result2); // { _id: ..., name: 'John', email: 'john@example.com' }

Debug

Known issues

deprecatedPackage is no longer actively maintained; last release 0.2.0 in 2016.

fix

Consider using built-in MongoDB projection in Monk directly or find an alternative.

affects: all

gotchaThe fields option in queries may not work as expected if not passed to the middleware.

fix

Ensure you instantiate the collection with the middleware: db.get('collection', { middlewares: [fields()] }).

affects: all

gotchaThe fields middleware does not support nested field paths like 'address.city' in some versions.

fix

Upgrade to 0.2.0 or use dot notation manually.

affects: <0.2.0

breakingMonk 7.0.0 changed internal MongoDB driver; monk-middleware-fields may not be fully compatible.

fix

Test with your Monk version; consider using Monk's built-in projection.

affects: monk >=7.0.0

Errors

Common errors & fixes

TypeError: fields is not a function

Using named import instead of default import in ESM.

fix

Use 'import fields from 'monk-middleware-fields'' instead of 'import { fields } from 'monk-middleware-fields''.

Error: Cannot find module 'monk-middleware-fields'

Package not installed or not in node_modules.

fix

Run 'npm install monk-middleware-fields'.

fields option ignored in query results

Middleware not applied to the collection instance.

fix

Pass { middlewares: [fields()] } when creating the collection.

Upgrade

Version history

0.2.0latest on npm

Audit

Dependencies

monkrequiredProvides the database instance and middleware system

Agent activity

4 hits · last 30 days

node

Resources

githubhttps://github.com/Automattic/monk ↗

packagehttps://www.npmjs.com/package/monk-middleware-fields ↗