memo-json

memo-json

A memoization decorator caching JSON results to disk. Speed up development applications depending on external resources.

Install package

yarn add memo-json

Usage

// src/data.ts
import {memo} from 'memo'

const getDataMemo = memo(function getData(param: string) { ... })

await getDataMemo('a') // Access remote
await getDataMemo('a') // 🥶 Hit cache!
await getDataMemo('b') // Access remote again. A cache key includes function arguments.

The first run of the above code will generate cache like below being reused in the subsequent calls.

# ${process.env.cwd()}/${functionName}-${paramHash}.json
.memo/getRemoteData-4e6c99.json
.memo/getRemoteData-dee827.json

Debug

Debug logs are available when you have DEBUG environment.

DEBUG=memo-json ts-node your-script.ts

# memo-json Cached .memo/xxx-5c9359.json +0ms

Options

• dir - Optional, ".memo" by default. ex. @memo({ dir: '__generated__' })
• enable - Optional, true by default. ex. @memo({ enable: process.env.NODE_ENV !== 'production' })

CLI

memo clean  # Equivalent to `rm -rf .memo`

License

Apache 2.0

Author

Soichi Takamura @piglovesyou