import { promises as fs } from "fs" ; import path from "path" ; interface Cache { certificates : { signerCert : Buffer | string ; signerKey : Buffer | string ; wwdr : Buffer | string ; signerKeyPassphrase : string ; } | undefined ; } const cache = { certificates : undefined , } ; export async function getCertificates ( ) { if ( cache . certificates ) { return cache . certificates ; } const [ signerCert , signerKey , wwdr , signerKeyPassphrase ] = await Promise . all ( [ fs . readFile ( path . resolve ( __dirname , "../../../certificates/signerCert.pem" ) , "utf-8" ) , fs . readFile ( path . resolve ( __dirname , "../../../certificates/signerKey.pem" ) , "utf-8" ) , fs . readFile ( path . resolve ( __dirname , "../../../certificates/WWDR.pem" ) , "utf-8" ) , Promise . resolve ( "123456" ) , ] ) ; cache . certificates = { signerCert , signerKey , wwdr , signerKeyPassphrase , } ; return cache . certificates ; }