function mapimport { map } from "https://deno.land/x/ldkit@v0.5.1/library/rxjs.ts"; map<T, R>(project: (value: T, index: number) => R): OperatorFunction<T, R>DeprecatedUse a closure instead of a thisArg. Signatures accepting a thisArg will be removed in v8. map<T, R, A>(project: (this: A,value: T,index: number,) => R, thisArg: A): OperatorFunction<T, R>Type ParametersTRParametersproject: (value: T, index: number) => RReturnsOperatorFunction<T, R>Type ParametersTRAParametersproject: (this: A,value: T,index: number,) => RthisArg: AReturnsOperatorFunction<T, R>