redux-persist-transform-compress/src/index.js

compress your redux state

import { createTransform } from "redux-persist";
import LZ from "lz-string";
import stringify from "json-stringify-safe";

const NODE_ENV = typeof process !== "undefined" ? process.env.NODE_ENV : "production"

export default function createTransformCompress(config) {
  return createTransform(
      (state) => LZ.compressToUTF16(stringify(state)),
      (state) => {
          if (typeof state !== "string") {
              if (NODE_ENV !== "production") {
                  console.error("redux-persist-transform-compress: expected outbound state to be a string")
              }
              return state
          }

          try {
              return JSON.parse(LZ.decompressFromUTF16(state))
          } catch (err) {
              if (NODE_ENV !== "production") {
                  console.error("redux-persist-transform-compress: error while decompressing state", err)
              }
              return null
          }
      },
      config
  )
}