import { Request } from 'express' ; import * as multer from 'multer' ; export const safeParse = ( str , fallback = undefined ) => { try { return JSON . parse ( str ) ; } catch { return fallback ; } } ; export const isId = ( key ) : boolean => key === 'id' || key === '_id' || /Id$/ . test ( key ) ; export const cleanQuery = ( query = '' , customFormatter ? ) : { [ key ] : any ; } => { if ( typeof query !== 'string' ) return query instanceof Object ? query : { } ; const defaultFormatter = ( key , value ) => { if ( isId ( key ) ) return value ; value = safeParse ( value , value ) ; if ( typeof value === 'string' ) return new RegExp ( value , 'i' ) ; return value ; } ; const parsedQuery = safeParse ( query , { } ) ; return Object . keys ( parsedQuery ) . map ( key => [ key , parsedQuery [ key ] ] ) . reduce ( ( fullQuery , queryChunk ) => { const key = queryChunk [ 0 ] ; const value = ( customFormatter || defaultFormatter ) ( key , queryChunk [ 1 ] ) ; if ( key && value !== undefined ) fullQuery [ key ] = value ; return fullQuery ; } , { } ) ; } ; export const parseMultiPartRequest = async ( request ) : Promise < void > => { return new Promise < void > ( ( resolve , reject ) => { multer ( ) . any ( ) ( request , undefined , async ( error ) => { if ( error ) reject ( error ) ; resolve ( ) ; } ) ; } ) ; } ;