add possibility to modify the file object

ts/gulpfunction.plugins.ts

@@ -1,4 +0,0 @@
-import "typings-global";
-
-export let Q = require("q");
-export let through2 = require("through2");

ts/index.ts

@@ -1,65 +1,75 @@
-import "typings-global";
+import 'typings-global'
+import * as q from 'q'
+import * as through2 from 'through2'
+import { Transform } from 'stream'
 
-import plugins = require("./gulpfunction.plugins");
+export type TExecutionMode = 'forEach' | 'forFirst' | 'atEnd'
 
+export interface IPromiseFunction {
+    (file?, enc?): PromiseLike<any>
+}
 
+module.exports = (
+    functionsToExecuteArg: IPromiseFunction | IPromiseFunction[],
+    executionModeArg: TExecutionMode = 'forEach'
+): Transform => {
 
-
-module.exports = function (functionsToExecuteArg:any|any[],executionModeArg:string = 'forEach') {
-    //important vars
-    let executionMode = executionModeArg; //can be forEach or atEnd
-    let functionsToExecute = functionsToExecuteArg;
-    let promiseArray = [];
-    let runFunction = function(functionArg){
-        let returnValue = functionArg();
-        if (typeof returnValue !== "undefined" && typeof returnValue.then !== "undefined") {
-            promiseArray.push(returnValue);
+    let promiseArray = []
+    let runFunction = function (functionArg, file, enc) {
+        let returnValue = functionArg(file, enc)
+        if (typeof returnValue !== 'undefined' && typeof returnValue.then !== 'undefined') {
+            promiseArray.push(returnValue)
         }
-    };
+    }
 
-    let checkAndRunFunction = function () {
-        if (typeof functionsToExecute === "function" ) {
-            runFunction(functionsToExecute);
-        } else if (Array.isArray(functionsToExecute)) {
-            for (let anyFunction in functionsToExecute) {
-                runFunction(functionsToExecute[anyFunction]);
+    let checkAndRunFunction = function (file, enc) {
+        if (typeof functionsToExecuteArg === 'function') {
+            runFunction(functionsToExecuteArg, file, enc)
+        } else if (Array.isArray(functionsToExecuteArg)) {
+            for (let anyFunction in functionsToExecuteArg) {
+                runFunction(functionsToExecuteArg[anyFunction], file, enc)
             }
         } else {
-            throw new Error("gulp-callfunction: something is strange with the given arguments");
+            throw new Error('gulp-callfunction: something is strange with the given arguments')
         }
-        return plugins.Q.all(promiseArray);
-    };
+        return q.all(promiseArray)
+    }
 
-    let hasExecutedOnce = false;
-    let forEach = function (file, enc, cb) { //the forEach function is called for every chunk
-        switch (executionMode){
-            case "forEach":
-                checkAndRunFunction().then(function(){
-                    cb(null, file);
-                });
-                break;
-            case "forFirst":
-                !hasExecutedOnce ? checkAndRunFunction().then(function(){
-                    cb(null, file);
-                }) : cb(null, file);
-                hasExecutedOnce = true;
-                break;
-            case "atEnd":
-                cb(null, file);
-                break;
+    let hasExecutedOnce = false
+    let forEach = function (file, enc, cb) { // the forEach function is called for every chunk
+        switch (executionModeArg) {
+            case 'forEach':
+                checkAndRunFunction(file, enc).then(function () {
+                    cb(null, file)
+                })
+                break
+            case 'forFirst':
+                if (hasExecutedOnce) {
+                    checkAndRunFunction(file, enc)
+                        .then(function () {
+                            cb(null, file)
+                        })
+                } else {
+                    cb(null, file)
+                }
+                hasExecutedOnce = true
+                break
+            case 'atEnd':
+                cb(null, file)
+                break
             default:
-                break;
+                break
         }
-    };
+    }
 
-    let atEnd = function(cb) {
-        if (executionMode === "atEnd") {
-            checkAndRunFunction().then(function(){
-                cb();
-            });
+    let atEnd = function (cb) {
+        if (executionModeArg === 'atEnd') {
+            checkAndRunFunction(null, null).then(function () {
+                cb()
+            })
         } else {
-            cb();
+            cb()
         }
-    };
-    return plugins.through2.obj(forEach,atEnd);
-};
+    }
+    return through2.obj(forEach, atEnd)
+}

ts/tsd.json

@@ -1,15 +0,0 @@
-{
-  "version": "v4",
-  "repo": "borisyankov/DefinitelyTyped",
-  "ref": "master",
-  "path": "typings",
-  "bundle": "typings/tsd.d.ts",
-  "installed": {
-    "node/node.d.ts": {
-      "commit": "efa0c1196d7280640e624ac1e7fa604502e7bd63"
-    },
-    "colors/colors.d.ts": {
-      "commit": "3191f6e0088eee07c4d8fd24e4d27a40a60d9eb9"
-    }
-  }
-}