changed as per @mhegazy, added other missing parts

pino/pino.d.ts

@@ -9,50 +9,114 @@ declare module 'pino' {
 
     import stream = require('stream')
 
-    interface Serializers {
-        req(req: Object): Object
-        res(res: Object): Object
+    type Level = 'fatal' | 'error' | 'warn' | 'info' | 'debug' | 'trace' | 'silent'
+    type Headers = {[header: string]: string}
+    type LevelLabelsToValues = {[level: string]: number}
+    type LevelValuesToLabels = {[level: number]: string}
+
+    interface RequestSummary {
+        pid: number
+        hostname: string
+        level: number
+        msg: string
+        time: string
+        v: number
+        req: {
+            method: string
+            url: string
+            headers: Headers
+            remoteAddress: string
+            remotePort: number
+        }
     }
 
+    interface ResponseSummary {
+        pid: number
+        hostname: string
+        level: number
+        msg: string
+        time: string
+        v: number
+        res: {
+            statusCode: number
+            header: string
+        }
+    }
+
+    interface ErrorSummary {
+        pid: number
+        hostname: string
+        level: number
+        msg: string
+        time: number
+        v: number
+        type: string
+        stack: string
+    }
+
+    interface Serializers {
+        req?: (req: any) => RequestSummary
+        res?: (res: any) => ResponseSummary
+        err?: (error: Error) => ErrorSummary
+    }
 
     interface LoggerOptions {
-        name?: string
-        enabled?: boolean
+        // avoid error causes by circular references in the object tree, default true
         safe?: boolean
+        // the name of the logger, default undefined
+        name?: string
+        // an object containing functions for custom serialization of objects.
+        // These functions should return an JSONifiable object and they should never throw
         serializers?: Serializers
+        // Outputs ISO time stamps ('2016-03-09T15:18:53.889Z') instead of Epoch time stamps (1457536759176).
+        // WARNING: This option carries a 25% performance drop, we recommend using default Epoch timestamps and transforming logs after if required.
+        // The pino -t command will do this for you (see CLI). default false.
+        slowtime?: boolean
+        // Enables extreme mode, yields an additional 60% performance (from 250ms down to 100ms per 10000 ops).
+        // There are trade-off's should be understood before usage. See Extreme mode explained. default false
+        extreme?: boolean
+        // enables logging, defaults to true.
+        enabled?: boolean
+        level?: Level
     }
 
-
     interface Pino {
-        (): Logger
-        (options: LoggerOptions): Logger
-        (stream: stream.Writable): Logger
+        (optionsOrStream?: LoggerOptions | stream.Writable): Logger
         (options: LoggerOptions, stream: stream.Writable): Logger
+        levels: {
+            values: LevelLabelsToValues
+            labels: LevelValuesToLabels
+        }
+        LOG_VERSION: number
+        pretty(opts?: {timeTransOnly?: boolean}): stream.Readable
+
     }
 
-
+    type LevelChangeEventListener = (lvl: string, val: number, prevLvl: string, prevVal: number) => void
+    type LevelChangeEvent = 'level-change'
 
     interface Logger {
-        child(bindings: Object): this
-        level: string   // 'fatal' | 'error' | 'warn' | 'info' | 'debug' | 'trace'
-        fatal(msg: string, ...args : any[]): void
-        fatal(obj: Object, msg: string, ...args : any[]): void
-        fatal(obj: Object): void
-        error(msg: string, ...args : any[]): void
-        error(obj: Object, msg: string, ...args : any[]): void
-        error(obj: Object): void
-        warn(msg: string, ...args : any[]): void
-        warn(obj: Object, msg: string, ...args : any[]): void
-        warn(obj: Object): void
+        child(bindings: {}): Logger
+        level: Level
+        levelVal: number
+        on(event: LevelChangeEvent, listener: LevelChangeEventListener): void
+        fatal(obj: {}): void
+        fatal(obj: {}, msg?: string, ...args : any[]): void
+        error(obj: {}): void
+        error(obj: {}, msg?: string, ...args : any[]): void
+        warn(obj: {}): void
+        warn(obj: {}, msg?: string, ...args : any[]): void
         info(msg: string, ...args : any[]): void
-        info(obj: Object, msg: string, ...args : any[]): void
-        info(obj: Object): void
-        debug(msg: string, ...args : any[]): void
-        debug(obj: Object, msg: string, ...args : any[]): void
-        debug(obj: Object): void
-        trace(msg: string, ...args : any[]): void
-        trace(obj: Object, msg: string, ...args : any[]): void
-        trace(obj: Object): void
+        info(obj: {}, msg?: string, ...args : any[]): void
+        debug(obj: {}): void
+        debug(obj: {}, msg?: string, ...args : any[]): void
+        trace(obj: {}): void
+        trace(obj: {}, msg?: string, ...args : any[]): void
+        levels: {
+            values: LevelLabelsToValues
+            labels: LevelValuesToLabels
+        }
+        LOG_VERSION: number
         stdSerializers: Serializers
     }