logging
Decorate methods for logging
Log
Log the start and end of a function
type IStartLogString = (construcotrName: string, propertyKey: string, args: IArguments) => string;
type IEndLogString = (construcotrName: string, propertyKey: string, result: any) => string;
/**
* Log start and end of functions
*
* @export
* @param {(out: string) => void} [pipe=console.log] Pipe method
* @param {IStartLogString} [start=defaultStart] Start text
* @param {IEndLogString} [end=defaultEnd] End text
* @returns Decorator
*/
function Log(pipe: (out: string) => void = console.log, start: IStartLogString = defaultStart, end: IEndLogString = defaultEnd) { ... }Log Error
Log errors of a function
type IOutLogErrorString = (constructorName: string, propertyKey: string, err: any) => string
/**
* Log method errors
*
* @export
* @param {(out: string) => void} [pipe=console.error] Pipe method
* @param {IOutLogErrorString} [errorLog=defaultErrorLog] Error text to log
* @param {boolean} [reThrow=true] Rethrow the error
* @returns Decorator
*/
function LogError(pipe: (out: string) => void = console.error, errorLog: IOutLogErrorString = defaultErrorLog, reThrow: boolean = true) { ... }Example
class Test {
@Log(console.log, (ctorN, pkey) => `Start ${ctorN}.${pkey}`, (ctorN, pkey, result) => `End ${ctorN}.${pkey} with result: ${result}`)
public logging() {
}
@Log()
@LogError(console.error, (ctorN, pKey, er) => `${ctorN}.${pKey} throws: ${er}`, false)
public loggingError() {
throw "Some Error";
}
}