throws error when "id":1 exists in post request body

[iam-raihan]

found some minor cases. though these issues can be ignored by changing my code but still it'll be great if you look into these. specially 'case 2'

• case 1: post request with body {"id":1,"name":"raihan"} throws below mentioned error! of
  course my id shouldn't be 1 but throwing error from server isn't convenient either.

• case 2: post request with body {"id":"0","name":"raihan"} returns id as it is, "0". i think it
  should return new random id even if my id is string type.

• case 3: post request with body {"id":0,"name":"raihan"} works fine though

Error: Insert failed, duplicate id
    at Function.insert (/app/node_modules/lodash-id/src/index.js:49:18)
    at /app/node_modules/lodash/lodash.js:4374:28
    at arrayReduce (/app/node_modules/lodash/lodash.js:683:21)
    at baseWrapperValue (/app/node_modules/lodash/lodash.js:4373:14)
    at LodashWrapper.wrapperValue (/app/node_modules/lodash/lodash.js:9052:14)
    at create (/app/node_modules/json-server/lib/server/router/plural.js:235:48)
    at Layer.handle [as handle_request] (/app/node_modules/express/lib/router/layer.js:95:5)
    at next (/app/node_modules/express/lib/router/route.js:137:13)
    at next (/app/node_modules/express/lib/router/route.js:131:14)
    at Route.dispatch (/app/node_modules/express/lib/router/route.js:112:3)

[gzdgkmnnn]

Yardimci olabilir misiniz