flat-file-db

Fast in-process flat file database that caches all data in memory

v1.0.0 URL: https://unpkg.com/flat-file-db@1.0.0/index.js

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db flat file memory in process json files compact consistent fast

firestore-in-memory

A drop-in, in-memory implementation of Firestore useful for testing

v0.3.2 URL: https://unpkg.com/firestore-in-memory@0.3.2/dist/index.js

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firestore in memory jest

hasown

A robust, ES3 compatible, "has own property" predicate.

v2.0.2 URL: https://unpkg.com/hasown@2.0.2/index.js

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has hasOwnProperty hasOwn has-own own has property in javascript ecmascript

mpdb

Mpdb a persistent in memory database

v1.1.1 URL: https://unpkg.com/mpdb@1.1.1/index.js

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database memory persist db mem in

for-in

Iterate over the own and inherited enumerable properties of an object, and return an object with properties that evaluate to true from the callback. Exit early by returning `false`. JavaScript/Node.js

v1.0.2 URL: https://unpkg.com/for-in@1.0.2/index.js

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for for-in for-own has has-own hasOwn in key keys object own value